Fix NullPointerException

This was a mistake

This reverts commit 038a86e35c.

app/build.gradle

@@ -6,7 +6,7 @@ android {
 
     defaultConfig {
         applicationId "info.nerull7.mysqlbrowser"
-        minSdkVersion 15
+        minSdkVersion 14
         targetSdkVersion 19
         versionCode 1
         versionName "1.0"

app/src/main/AndroidManifest.xml

@@ -3,7 +3,7 @@
     package="info.nerull7.mysqlbrowser" >
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
         android:theme="@style/AppTheme" >
@@ -32,11 +32,16 @@
         </activity>
         <activity
             android:name=".ElementActivity"
-            android:label="@string/title_activity_element" >
+            android:label="@string/title_activity_element"
+            android:windowSoftInputMode="adjustPan">
+        </activity>
+        <activity
+            android:name=".SQLActivity"
+            android:label="@string/title_activity_sql"
+            android:windowSoftInputMode="adjustResize">
         </activity>
     </application>
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
-
 </manifest>

app/src/main/java/info/nerull7/mysqlbrowser/DatabaseFragment.java

@@ -17,18 +17,25 @@ import android.widget.TextView;
 
 import java.util.List;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 14.07.14.
  *
  * Fragment for showing list of Available Databases for user
  */
-public class DatabaseFragment extends Fragment implements AdapterView.OnItemClickListener, AsyncDatabaseConnector.ListReturnListener {
+public class DatabaseFragment extends Fragment implements AdapterView.OnItemClickListener, DatabaseConnector.ListReturnListener, DatabaseConnector.OnPostExecuteListener {
     private ListView databasesListView;
     private ListAdapter listAdapter;
     private RelativeLayout rootView;
     private ProgressBar progressBar;
+    private List<String> databases;
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Static.databaseConnector.setDatabaseInUse(null);
+    }
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
@@ -38,8 +45,9 @@ public class DatabaseFragment extends Fragment implements AdapterView.OnItemClic
         this.rootView = (RelativeLayout) rootView;
         progressBar = (ProgressBar) rootView.findViewById(R.id.loginProgressBar);
 
-        Static.asyncDatabaseConnector.setListReturnListener(this);
-        Static.asyncDatabaseConnector.getDatabases();
+        Static.databaseConnector.setListReturnListener(this);
+        Static.databaseConnector.setOnPostExecuteListener(this);
+        Static.databaseConnector.getDatabases();
         return rootView;
     }
 
@@ -51,7 +59,7 @@ public class DatabaseFragment extends Fragment implements AdapterView.OnItemClic
             Intent intent = new Intent(getActivity(), ListActivity.class);
             intent.putExtra(Static.FRAGMENT_TO_START, Static.FRAGMENT_TABLE);
             intent.putExtra(Static.DATABASE_NAME_ARG, chosenDatabase);
-            Static.asyncDatabaseConnector.setDatabaseInUse(chosenDatabase);
+            Static.databaseConnector.setDatabaseInUse(chosenDatabase);
             startActivity(intent);
         } else {
             Static.showErrorAlert(getResources().getString(R.string.no_connection), getActivity());
@@ -60,6 +68,11 @@ public class DatabaseFragment extends Fragment implements AdapterView.OnItemClic
 
     @Override
     public void onListReturn(List<String> databases) {
+        this.databases = databases;
+    }
+
+    @Override
+    public void onPostExecute() {
         if(databases!= null) {
             listAdapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, databases);
             databasesListView.setAdapter(listAdapter);

app/src/main/java/info/nerull7/mysqlbrowser/ElementArrayAdapter.java

@@ -1,13 +1,14 @@
 package info.nerull7.mysqlbrowser;
 
 import android.content.Context;
+import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
-import android.widget.EditText;
 import android.widget.TextView;
 
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -21,33 +22,58 @@ public class ElementArrayAdapter extends ArrayAdapter<String> {
 
     public ElementArrayAdapter(Context context, int resource, List<String> fields) {
         super(context, resource, fields);
-        this.context = context;
-        this.fields = fields;
-        layout = resource;
-        values = null;
+        init(context, resource, fields);
+        values = new ArrayList<String>();
+        for(String field: fields){
+            values.add("");
+        }
     }
 
     public ElementArrayAdapter(Context context, int resource, List<String> fields, List<String> values) {
-        this(context, resource, fields);
-        this.values = values;
+        super(context, resource, fields);
+        init(context, resource, fields);
+        this.values = new ArrayList<String>();
+        if(values!=null) {
+            this.values.addAll(values); // Copy
+        } else {
+            for(int i=0;i<fields.size();i++){
+                this.values.add(new String());
+            }
+        }
+    }
+
+    private void init(Context context, int resource, List<String> fields){
+        this.context = context;
+        this.fields = fields;
+        layout = resource;
     }
 
     @Override
-    public View getView(int position, View convertView, ViewGroup parent) {
+    public View getView(final int position, View convertView, ViewGroup parent) {
         LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-        View rowView = layoutInflater.inflate(layout, parent, false);
+        final View rowView = layoutInflater.inflate(layout, parent, false);
 
         TextView textView = (TextView) rowView.findViewById(R.id.textFieldName);
         textView.setText(fields.get(position));
-        if(values != null){
-            EditText textFieldName = (EditText) rowView.findViewById(R.id.editFieldValue);
-            textFieldName.setText(values.get(position));
-        }
-
+        TextView textFieldName = (TextView) rowView.findViewById(R.id.editFieldValue);
+        textFieldName.setText(values.get(position));
+        textFieldName.setOnFocusChangeListener(new View.OnFocusChangeListener() {
+            @Override
+            public void onFocusChange(View v, boolean hasFocus) {
+                if (!hasFocus) {
+                    String tmp = String.valueOf(((TextView) v).getText());
+                    values.set(position, tmp);
+                }
+            }
+        });
         return rowView;
     }
 
     public List<String> getFieldArray(){
         return fields;
     }
+
+    public List<String> getValues() {
+        return values;
+    }
 }

app/src/main/java/info/nerull7/mysqlbrowser/ElementFragment.java

@@ -2,6 +2,7 @@ package info.nerull7.mysqlbrowser;
 
 import android.app.AlertDialog;
 import android.app.Fragment;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -10,24 +11,29 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.EditText;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.AbsListView;
 import android.widget.ListView;
 import android.widget.ProgressBar;
 
-import java.util.ArrayList;
 import java.util.List;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 2014-08-06.
  *
  * Fragment for editing/adding elements
  */
-public class ElementFragment extends Fragment implements AsyncDatabaseConnector.ListReturnListener, AsyncDatabaseConnector.StringReturnListener {
+public class ElementFragment extends Fragment implements DatabaseConnector.ListReturnListener, DatabaseConnector.StringReturnListener, DatabaseConnector.OnPostExecuteListener {
     public static final String EDIT_ELEMENT = "edit_element";
     public static final String EDIT_LIST = "edit_element_list";
 
+    private static final int POST_EXECUTE_NONE = 0;
+    private static final int POST_EXECUTE_GET_FIELDS = 1;
+    private static final int POST_EXECUTE_UPDATE_ELEMENT = 2;
+    private static final int POST_EXECUTE_ADD_ELEMENT = 3;
+
     private String tableName;
     private ElementArrayAdapter listAdapter;
 
@@ -35,6 +41,8 @@ public class ElementFragment extends Fragment implements AsyncDatabaseConnector.
     private ListView listView;
 
     private List<String> values;
+    private String message;
+    private int postExecute;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
@@ -43,28 +51,83 @@ public class ElementFragment extends Fragment implements AsyncDatabaseConnector.
         progressBar = (ProgressBar) rootView.findViewById(R.id.progressBar);
         listView = (ListView) rootView.findViewById(R.id.listView);
 
+        listView.setOnScrollListener(new AbsListView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(AbsListView view, int scrollState) {
+                if(scrollState==SCROLL_STATE_TOUCH_SCROLL) {
+                    listView.requestFocus();
+                    InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
+                    inputMethodManager.hideSoftInputFromWindow(listView.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
+                }
+            }
+
+            @Override
+            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
+            }
+        });
+        listView.setItemsCanFocus(true);
         initArguments();
 
-        Static.asyncDatabaseConnector.setListReturnListener(this);
-        Static.asyncDatabaseConnector.getFields(tableName);
+        postExecute = POST_EXECUTE_NONE;
+        Static.databaseConnector.setListReturnListener(this);
+        Static.databaseConnector.setOnPostExecuteListener(this);
+        Static.databaseConnector.getFields(tableName);
 
         return rootView;
     }
 
+    private void actionSave(){
+        List<String> fields = listAdapter.getFieldArray();
+        Static.databaseConnector.setStringReturnListener(this);
+        if(getArguments().getBoolean(EDIT_ELEMENT))
+            Static.databaseConnector.updateElement(tableName, fields, values, listAdapter.getValues());
+        else
+            Static.databaseConnector.addNewElement(tableName, fields, listAdapter.getValues());
+    }
+
+    private void actionRemove(){
+        final List<String> fields = listAdapter.getFieldArray();
+        Static.databaseConnector.setStringReturnListener(this);
+
+        final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+        builder.setMessage(R.string.error_remove);
+        builder.setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                Static.databaseConnector.removeElement(tableName, fields, values);
+//                getActivity().finish();
+            }
+        });
+        builder.setNegativeButton(R.string.no, new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialogInterface, int i) {
+                // Nothing to do just get back
+            }
+        });
+        builder.setTitle(R.string.warning);
+        builder.setIcon(R.drawable.ic_action_warning);
+        builder.setCancelable(false); // There is no exit
+        builder.create();
+        builder.show();
+
+
+
+    }
+
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        if(item.getItemId() == R.id.action_save ){
-            List<String> fields = listAdapter.getFieldArray();
-
-            Static.asyncDatabaseConnector.setStringReturnListener(this);
-            if(getArguments().getBoolean(EDIT_ELEMENT))
-                Static.asyncDatabaseConnector.updateElement(tableName, fields, values, getNewValues());
-            else
-                Static.asyncDatabaseConnector.addNewElement(tableName, fields, getNewValues());
-            return true;
-        } else {
-            return super.onOptionsItemSelected(item);
+        listView.requestFocus();
+        switch (item.getItemId()){
+            case R.id.action_save:
+                actionSave();
+                break;
+            case R.id.action_remove:
+                actionRemove();
+                break;
+            default:
+                return super.onOptionsItemSelected(item);
         }
+        return true;
     }
 
     private void initArguments() {
@@ -78,34 +141,45 @@ public class ElementFragment extends Fragment implements AsyncDatabaseConnector.
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         inflater.inflate(R.menu.element, menu);
+        if(!getArguments().getBoolean(EDIT_ELEMENT)) {
+            menu.findItem(R.id.action_remove).setVisible(false);
+        }
         super.onCreateOptionsMenu(menu, inflater);
     }
 
     @Override
     public void onListReturn(List<String> fields) {
         listAdapter = new ElementArrayAdapter(getActivity(), R.layout.list_item_element_simple, fields, values);
-        listView.setAdapter(listAdapter);
-//        databasesListView.setAdapter(listAdapter);
-//        databasesListView.setOnItemClickListener(this);
-        progressBar.setVisibility(View.INVISIBLE);
+        postExecute = POST_EXECUTE_GET_FIELDS;
 
-        setHasOptionsMenu(true);
-    }
-
-    private List<String> getNewValues(){
-        List<String> newValues = new ArrayList<String>();
-
-        for(int i=0; i<listView.getChildCount();i++){
-            EditText editText = (EditText) listView.getChildAt(i).findViewById(R.id.editFieldValue);
-            newValues.add(String.valueOf(editText.getText()));
-        }
-        return newValues;
     }
 
     @Override
     public void onStringReturn(String data) {
+        message = data;
+        postExecute = POST_EXECUTE_ADD_ELEMENT;
+    }
+
+    @Override
+    public void onPostExecute() {
+        switch (postExecute){
+            case POST_EXECUTE_GET_FIELDS:
+                listView.setAdapter(listAdapter);
+                progressBar.setVisibility(View.INVISIBLE);
+                setHasOptionsMenu(true);
+                break;
+            case POST_EXECUTE_ADD_ELEMENT:
+            case POST_EXECUTE_UPDATE_ELEMENT:
+                showInfo(message);
+                break;
+        }
+        // Clean after execute
+        postExecute = POST_EXECUTE_NONE;
+    }
+
+    private void showInfo(String info){
         final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
-        builder.setMessage(data);
+        builder.setMessage(info);
         builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
             @Override
             public void onClick(DialogInterface dialogInterface, int i) {
@@ -119,8 +193,10 @@ public class ElementFragment extends Fragment implements AsyncDatabaseConnector.
             }
         });*/
         builder.setTitle(R.string.status);
-        builder.setIcon(R.drawable.ic_action_warning); //TODO Change Icon
+        builder.setIcon(R.drawable.ic_action_warning);
+        builder.setCancelable(false); // There is no exit
         builder.create();
         builder.show();
     }
+
 }

app/src/main/java/info/nerull7/mysqlbrowser/EntriesFragment.java

@@ -24,14 +24,14 @@ import android.widget.TextView;
 import java.util.ArrayList;
 import java.util.List;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 15.07.14.
  *
  * Fragment for showing elements
  */
-public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.MatrixReturnListener, AsyncDatabaseConnector.ListReturnListener, AsyncDatabaseConnector.IntegerReturnListener, View.OnClickListener {
+public class EntriesFragment extends Fragment implements DatabaseConnector.MatrixReturnListener, DatabaseConnector.ListReturnListener, DatabaseConnector.IntegerReturnListener, View.OnClickListener, DatabaseConnector.OnPostExecuteListener {
     private static final int HEADER_PADDING_TOP = 15;
     private static final int HEADER_PADDING_BOTTOM = 15;
     private static final int HEADER_PADDING_LEFT = 15;
@@ -57,7 +57,13 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
     private CustomScrollView fakeScrollView;
     private View dummyView;
 
+    private int onPostExecuteListenerExecuted;
+
     private Menu menu;
+    private TableRow headerRow;
+    private int[] maxWidth;
+
+    private boolean isFirstCreate;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -66,12 +72,11 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
 
         initArguments();
         initViewItems(rootView);
+        initListeners();
 
-        Static.asyncDatabaseConnector.setIntegerReturnListener(this);
-        Static.asyncDatabaseConnector.setListReturnListener(this);
-        Static.asyncDatabaseConnector.setMatrixReturnListener(this);
-        Static.asyncDatabaseConnector.getFields(tableName);
-        Static.asyncDatabaseConnector.getEntriesCount(tableName);
+        onPostExecuteListenerExecuted = 0;
+        Static.databaseConnector.getFields(tableName);
+        Static.databaseConnector.getEntriesCount(tableName);
 
         return rootView;
     }
@@ -80,18 +85,19 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
         databaseName = getArguments().getString(Static.DATABASE_NAME_ARG);
         tableName = getArguments().getString(Static.TABLE_NAME_ARG);
         page = 1;
+        isFirstCreate = true;
 
         entriesLimit = PreferenceManager.getDefaultSharedPreferences(getActivity()).getInt(SettingsFragment.ENTRIES_PAGE_LIMIT, SettingsFragment.ENTRIES_PAGE_LIMIT_DEF);
     }
 
     private void initViewItems(View rootView){
         headerFrame = (FrameLayout) rootView.findViewById(R.id.headerFrame);
-        entriesTable = (TableLayout) rootView.findViewById(R.id.entriesTable);
         entriesScrollView = (ScrollView) rootView.findViewById(R.id.entriesScrollView);
         fakeScrollView = (CustomScrollView) rootView.findViewById(R.id.fakeScroll);
         progressBar = (ProgressBar) rootView.findViewById(R.id.loginProgressBar);
         dummyView = rootView.findViewById(R.id.dummyView);
         horizontalScrollView = (HorizontalScrollView) rootView.findViewById(R.id.horizontalScrollView);
+        entriesTable = new TableLayout(getActivity());
 
         fakeScrollView.setOnTouchEventListener(new CustomScrollView.OnTouchEventListener() {
             @Override
@@ -102,9 +108,14 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
             }
         });
 
-        layoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
-        headerFrame.setVisibility(View.INVISIBLE);
-        entriesTable.setVisibility(View.INVISIBLE);
+        layoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.MATCH_PARENT);
+    }
+
+    private void initListeners(){
+        Static.databaseConnector.setIntegerReturnListener(this);
+        Static.databaseConnector.setListReturnListener(this);
+        Static.databaseConnector.setMatrixReturnListener(this);
+        Static.databaseConnector.setOnPostExecuteListener(this);
     }
 
     @Override
@@ -141,10 +152,12 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
 
     private void loadAnotherPage(){
         changeMenus(page);
-        entriesTable.removeAllViews(); // clean table
+        entriesScrollView.removeAllViews(); // clean table
+        entriesTable = new TableLayout(getActivity());
+        onPostExecuteListenerExecuted--;
 
         setLoading(true);
-        Static.asyncDatabaseConnector.getRows(tableName, entriesLimit, page); // get new entries
+        Static.databaseConnector.getRows(tableName, entriesLimit, page); // get new entries
     }
 
     private void addNewElement(){
@@ -203,27 +216,17 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
                 newRow.setClickable(true);
                 newRow.setOnClickListener(this);
                 entriesTable.addView(newRow);
-
-                syncWidths();
-                fakeScroll();
+                syncWidthsFirstStage();
             }
         } else {
-            TextView errorMessage = new TextView(getActivity());
-            errorMessage.setText(R.string.error_no_entries);
-            errorMessage.setTypeface(null, Typeface.ITALIC);
-            errorMessage.setClickable(false);
-            entriesScrollView.removeView(entriesTable);
-            headerFrame.setVisibility(View.VISIBLE);
-            entriesScrollView.addView(errorMessage);
+            entriesTable = null;
         }
 
-        setLoading(false);
     }
 
     @Override
     public void onListReturn(List<String> fieldList) {
         // First we need header
-        TableRow headerRow;
         headerRow = new TableRow(getActivity());
         headerRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT));
         rowCount = fieldList.size();
@@ -236,9 +239,8 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
             textView.setPadding(HEADER_PADDING_LEFT, HEADER_PADDING_TOP, HEADER_PADDING_RIGHT, HEADER_PADDING_BOTTOM);
             headerRow.addView(textView);
         }
-        headerFrame.addView(headerRow);
 
-        Static.asyncDatabaseConnector.getRows(tableName, entriesLimit, page);
+        Static.databaseConnector.getRows(tableName, entriesLimit, page);
     }
 
     @Override
@@ -246,30 +248,35 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
         pageCount = result/entriesLimit;
         if( result%entriesLimit > 0)
             pageCount++;
-
-        setHasOptionsMenu(true);
+        getActivity().runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                setHasOptionsMenu(true);
+            }
+        });
     }
 
-    private void syncWidths(){ // TODO: Merge with adding columns maybe? Loops -= 3 should be quicker
-        TableRow headerRow = (TableRow) headerFrame.getChildAt(0);
-        int maxWidth[]= new int[headerRow.getChildCount()];
-        for(int i=0;i<headerRow.getChildCount();i++){
+    private void syncWidthsFirstStage() { // TODO: Merge with adding columns maybe? Loops -= 3 should be quicker
+        maxWidth = new int[headerRow.getChildCount()];
+        for (int i = 0; i < headerRow.getChildCount(); i++) {
             TextView textView = (TextView) headerRow.getChildAt(i);
             textView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
             maxWidth[i] = textView.getMeasuredWidth();
         }
 
-        for(int i=0;i<entriesTable.getChildCount();i++){
+        for (int i = 0; i < entriesTable.getChildCount(); i++) {
             TableRow tableRow = (TableRow) entriesTable.getChildAt(i);
-            for(int j=0;j<tableRow.getChildCount();j++){
+            for (int j = 0; j < tableRow.getChildCount(); j++) {
                 TextView textView = (TextView) tableRow.getChildAt(j);
                 textView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
                 int width = textView.getMeasuredWidth();
-                if(width>maxWidth[j])
-                    maxWidth[j]=width;
+                if (width > maxWidth[j])
+                    maxWidth[j] = width;
             }
         }
+    }
 
+    private void syncWidthsSecondStage() {
         for(int i=0;i<headerRow.getChildCount();i++){
             TableRow entriesRow = (TableRow) entriesTable.getChildAt(0);
 
@@ -279,9 +286,6 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
             tmpEntries.setWidth(maxWidth[i]);
             tmpHeader.setWidth(maxWidth[i]);
         }
-
-        headerFrame.setVisibility(View.VISIBLE);
-        entriesTable.setVisibility(View.VISIBLE);
     }
 
     private void fakeScroll(){
@@ -290,7 +294,8 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
         dummyView.setMinimumHeight(height);
 
         RelativeLayout.LayoutParams fakeScrollLayout = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
-        fakeScrollLayout.setMargins(0,headerFrame.getHeight(),0,0);
+        headerFrame.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
+        fakeScrollLayout.setMargins(0,headerFrame.getMeasuredHeight(),0,0);
 
         fakeScrollView.setLayoutParams(fakeScrollLayout);
     }
@@ -311,4 +316,35 @@ public class EntriesFragment extends Fragment implements AsyncDatabaseConnector.
         intent.putStringArrayListExtra(ElementFragment.EDIT_LIST, values);
         startActivity(intent);
     }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        if(!isFirstCreate) {
+            initListeners(); // Could be overwritten
+            loadAnotherPage(); // This reloads entries
+        } else {
+            isFirstCreate = false;
+        }
+    }
+
+    @Override
+    public void onPostExecute() {
+        if(++onPostExecuteListenerExecuted==3){
+            if(headerFrame.getChildCount()==0) // You can have only one child
+                headerFrame.addView(headerRow);
+            if(entriesTable!=null) {
+                syncWidthsSecondStage();
+                entriesScrollView.addView(entriesTable);
+                fakeScroll();
+            } else {
+                TextView errorMessage = new TextView(getActivity());
+                errorMessage.setText(R.string.error_no_entries);
+                errorMessage.setTypeface(null, Typeface.ITALIC);
+                errorMessage.setClickable(false);
+                entriesScrollView.addView(errorMessage);
+            }
+            setLoading(false);
+        }
+    }
 }

app/src/main/java/info/nerull7/mysqlbrowser/ListActivity.java

@@ -33,7 +33,7 @@ public class ListActivity extends Activity {
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
-        getMenuInflater().inflate(R.menu.main, menu);
+        getMenuInflater().inflate(R.menu.logged, menu);
         return true;
     }
 
@@ -47,6 +47,8 @@ public class ListActivity extends Activity {
         if (id == R.id.action_settings) {
             Static.startSettings(this);
             return true;
+        } else if (id == R.id.action_sql){
+            Static.startSQL(this, getIntent().getExtras().getString(Static.DATABASE_NAME_ARG));
         }
         return super.onOptionsItemSelected(item);
     }

app/src/main/java/info/nerull7/mysqlbrowser/LoginFragment.java

@@ -12,21 +12,23 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ProgressBar;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 07.07.14.
  *
  * Fragment for login
  */
-public class LoginFragment extends Fragment implements View.OnClickListener, AsyncDatabaseConnector.BooleanReturnListener {
+public class LoginFragment extends Fragment implements View.OnClickListener, DatabaseConnector.BooleanReturnListener, DatabaseConnector.OnPostExecuteListener {
     private EditText urlTextbox;
     private EditText loginTextbox;
     private EditText passwordTextbox;
     private ProgressBar progressBar;
     private Button loginButton;
 
-    AsyncDatabaseConnector asyncDatabaseConnector;
+    DatabaseConnector databaseConnector;
+
+    private boolean result;
 
     public LoginFragment(){}
 
@@ -84,9 +86,10 @@ public class LoginFragment extends Fragment implements View.OnClickListener, Asy
         url = urlTextbox.getText().toString();
 
         if(Static.isNetworkConnected(getActivity())) {
-            asyncDatabaseConnector = new AsyncDatabaseConnector(login, password, url);
-            asyncDatabaseConnector.setBooleanReturnListener(this);
-            asyncDatabaseConnector.checkLogin();
+            databaseConnector = new DatabaseConnector(login, password, url, getActivity().getResources());
+            databaseConnector.setBooleanReturnListener(this);
+            databaseConnector.setOnPostExecuteListener(this);
+            databaseConnector.checkLogin();
         } else {
             Static.showErrorAlert(getResources().getString(R.string.no_connection), getActivity());
             loginButton.setEnabled(true); // Now we can click button again
@@ -96,18 +99,23 @@ public class LoginFragment extends Fragment implements View.OnClickListener, Asy
 
     @Override
     public void onBooleanReturn(boolean result) {
+        this.result = result;
+    }
+
+
+    @Override
+    public void onPostExecute() {
         if(result) {
-            Static.asyncDatabaseConnector = asyncDatabaseConnector;
+            Static.databaseConnector = databaseConnector;
             Intent intent = new Intent(getActivity(), ListActivity.class);
             intent.putExtra(Static.FRAGMENT_TO_START, Static.FRAGMENT_DATABASE);
             startActivity(intent);
         }
         else {
-            Static.showErrorAlert(AsyncDatabaseConnector.errorMsg, getActivity());
+            Static.showErrorAlert(DatabaseConnector.errorMsg, getActivity());
         }
+
         loginButton.setEnabled(true); // Now we can click button again
         progressBar.setVisibility(View.INVISIBLE);
     }
-
-
 }

app/src/main/java/info/nerull7/mysqlbrowser/NumberPickerDialog.java

@@ -1,108 +0,0 @@
-package info.nerull7.mysqlbrowser;
-
-/**
- * Created by nerull7 on 18.07.14.
- */
-
-import android.app.AlertDialog;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.widget.NumberPicker;
-
-/**
- * A dialog that prompts the user for the message deletion limits.
- */
-public class NumberPickerDialog extends AlertDialog implements DialogInterface.OnClickListener {
-    private static final String NUMBER = "number";
-
-    /**
-     * The callback interface used to indicate the user is done filling in
-     * the time (they clicked on the 'Set' button).
-     */
-    public interface OnNumberSetListener {
-
-        /**
-         * @param number The number that was set.
-         */
-        void onNumberSet(int number);
-    }
-
-    private final NumberPicker mNumberPicker;
-    private final OnNumberSetListener mCallback;
-
-    /**
-     * @param context Parent.
-     * @param callBack How parent is notified.
-     * @param number The initial number.
-     */
-    public NumberPickerDialog(Context context,
-                              OnNumberSetListener callBack,
-                              int number,
-                              int rangeMin,
-                              int rangeMax,
-                              int title) {
-        this(context, AlertDialog.THEME_HOLO_LIGHT, callBack, number, rangeMin, rangeMax, title);
-    }
-
-    /**
-     * @param context Parent.
-     * @param theme the theme to apply to this dialog
-     * @param callBack How parent is notified.
-     * @param number The initial number.
-     */
-    public NumberPickerDialog(Context context,
-                              int theme,
-                              OnNumberSetListener callBack,
-                              int number,
-                              int rangeMin,
-                              int rangeMax,
-                              int title) {
-        super(context, theme);
-        mCallback = callBack;
-
-        setTitle(title);
-
-        setButton(DialogInterface.BUTTON_POSITIVE, context.getText(R.string.set), this);
-        setButton(DialogInterface.BUTTON_NEGATIVE, context.getText(R.string.cancel),
-                (OnClickListener) null);
-
-        LayoutInflater inflater =
-                (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
-        View view = inflater.inflate(R.layout.number_picker_dialog, null);
-        setView(view);
-        mNumberPicker = (NumberPicker) view.findViewById(R.id.number_picker);
-
-        // initialize state
-        mNumberPicker.setMinValue(rangeMin);
-        mNumberPicker.setMaxValue(rangeMax);
-        mNumberPicker.setValue(number);
-        mNumberPicker.setOnLongPressUpdateInterval(100); // make the repeat rate three times as fast
-        // as normal since the range is so large.
-        mNumberPicker.setWrapSelectorWheel(false);       // don't wrap from min->max
-    }
-
-    public void onClick(DialogInterface dialog, int which) {
-        if (mCallback != null) {
-            mNumberPicker.clearFocus();
-            mCallback.onNumberSet(mNumberPicker.getValue());
-            dialog.dismiss();
-        }
-    }
-
-    @Override
-    public Bundle onSaveInstanceState() {
-        Bundle state = super.onSaveInstanceState();
-        state.putInt(NUMBER, mNumberPicker.getValue());
-        return state;
-    }
-
-    @Override
-    public void onRestoreInstanceState(Bundle savedInstanceState) {
-        super.onRestoreInstanceState(savedInstanceState);
-        int number = savedInstanceState.getInt(NUMBER);
-        mNumberPicker.setValue(number);
-    }
-}

app/src/main/java/info/nerull7/mysqlbrowser/SQLActivity.java

@@ -0,0 +1,22 @@
+package info.nerull7.mysqlbrowser;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+/**
+ * Created by nerull7 on 30.09.14.
+ */
+public class SQLActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_sql);
+
+        if (savedInstanceState == null) {
+            getFragmentManager().beginTransaction()
+                    .add(R.id.container, new SQLFragment())
+                    .commit();
+        }
+    }
+
+}

app/src/main/java/info/nerull7/mysqlbrowser/SQLEntriesFragment.java

@@ -0,0 +1,240 @@
+package info.nerull7.mysqlbrowser;
+
+import android.app.AlertDialog;
+import android.app.Fragment;
+import android.content.DialogInterface;
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.HorizontalScrollView;
+import android.widget.ProgressBar;
+import android.widget.RelativeLayout;
+import android.widget.ScrollView;
+import android.widget.TableLayout;
+import android.widget.TableRow;
+import android.widget.TextView;
+
+import java.util.List;
+
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
+
+/**
+ * Created by nerull7 on 15.07.14.
+ *
+ * Fragment for showing elements
+ */
+public class SQLEntriesFragment extends Fragment implements DatabaseConnector.MatrixReturnListener, DatabaseConnector.ListReturnListener, DatabaseConnector.OnPostExecuteListener, DatabaseConnector.StringReturnListener {
+    private static final int HEADER_PADDING_TOP = 15;
+    private static final int HEADER_PADDING_BOTTOM = 15;
+    private static final int HEADER_PADDING_LEFT = 15;
+    private static final int HEADER_PADDING_RIGHT = 15;
+    private static final int ENTRIES_PADDING_TOP = 30;
+    private static final int ENTRIES_PADDING_BOTTOM = 30;
+    private static final int ENTRIES_PADDING_LEFT = 15;
+    private static final int ENTRIES_PADDING_RIGHT = 15;
+
+    private TableLayout entriesTable;
+    private ScrollView entriesScrollView;
+    private FrameLayout headerFrame;
+    private HorizontalScrollView horizontalScrollView;
+    private TableRow.LayoutParams layoutParams;
+
+    private ProgressBar progressBar;
+    private CustomScrollView fakeScrollView;
+    private View dummyView;
+    private boolean showError;
+
+    private Menu menu;
+    private TableRow headerRow;
+    private int[] maxWidth;
+
+    private boolean isFirstCreate;
+    private String errorMessage;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_entries, container, false);
+        initViewItems(rootView);
+        showError = false;
+        return rootView;
+    }
+
+    private void initViewItems(View rootView){
+        headerFrame = (FrameLayout) rootView.findViewById(R.id.headerFrame);
+        entriesScrollView = (ScrollView) rootView.findViewById(R.id.entriesScrollView);
+        fakeScrollView = (CustomScrollView) rootView.findViewById(R.id.fakeScroll);
+        progressBar = (ProgressBar) rootView.findViewById(R.id.loginProgressBar);
+        dummyView = rootView.findViewById(R.id.dummyView);
+        horizontalScrollView = (HorizontalScrollView) rootView.findViewById(R.id.horizontalScrollView);
+        entriesTable = new TableLayout(getActivity());
+
+        fakeScrollView.setOnTouchEventListener(new CustomScrollView.OnTouchEventListener() {
+            @Override
+            public boolean onTouchEvent(MotionEvent ev) {
+                ev.offsetLocation(0, headerFrame.getHeight());
+                horizontalScrollView.dispatchTouchEvent(ev);
+                return true;
+            }
+        });
+
+        layoutParams = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.MATCH_PARENT);
+    }
+
+    private void setLoading(boolean isLoading){
+        if(menu != null) {
+            menu.findItem(R.id.action_next).setEnabled(!isLoading);
+            menu.findItem(R.id.action_previous).setEnabled(!isLoading);
+        }
+        progressBar.setVisibility(isLoading ? View.VISIBLE : View.INVISIBLE);
+    }
+
+    @Override
+    public void onMatrixReturn(List<List<String>> rows) {
+        // Now we get Rows
+        if(rows!=null) {
+            int background;
+            for (int i = 0; i < rows.size(); i++) {
+                List<String> elements = rows.get(i);
+                TableRow newRow = new TableRow(getActivity());
+
+                if( i%2 == 0 ){ // Two backgrounds for lines for better visibility
+                    background=R.drawable.entries_element_1;
+                } else {
+                    background=R.drawable.entries_element_2;
+                }
+
+                for (int j = 0; j < elements.size(); j++) { // elements.size can be the same as in header so maybe some one number or not
+                    TextView textView = new TextView(getActivity());
+                    textView.setText(elements.get(j));
+                    textView.setLayoutParams(layoutParams);
+                    textView.setPadding(ENTRIES_PADDING_LEFT, ENTRIES_PADDING_TOP, ENTRIES_PADDING_RIGHT, ENTRIES_PADDING_BOTTOM);
+                    textView.setBackgroundResource(background);
+                    textView.setId(j);
+                    newRow.addView(textView);
+                }
+                newRow.setClickable(false);
+                entriesTable.addView(newRow);
+                syncWidthsFirstStage();
+            }
+        } else {
+            entriesTable = null;
+        }
+
+    }
+
+    @Override
+    public void onListReturn(List<String> fieldList) {
+        // First we need header
+        headerRow = new TableRow(getActivity());
+        headerRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.WRAP_CONTENT));
+        for (String aFieldList : fieldList) {
+            TextView textView = new TextView(getActivity());
+            textView.setText(aFieldList);
+            textView.setTypeface(null, Typeface.BOLD);
+            textView.setLayoutParams(layoutParams);
+            textView.setBackgroundResource(R.drawable.background_header);
+            textView.setPadding(HEADER_PADDING_LEFT, HEADER_PADDING_TOP, HEADER_PADDING_RIGHT, HEADER_PADDING_BOTTOM);
+            headerRow.addView(textView);
+        }
+    }
+
+    private void syncWidthsFirstStage() { // TODO: Merge with adding columns maybe? Loops -= 3 should be quicker
+        maxWidth = new int[headerRow.getChildCount()];
+        for (int i = 0; i < headerRow.getChildCount(); i++) {
+            TextView textView = (TextView) headerRow.getChildAt(i);
+            textView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
+            maxWidth[i] = textView.getMeasuredWidth();
+        }
+
+        for (int i = 0; i < entriesTable.getChildCount(); i++) {
+            TableRow tableRow = (TableRow) entriesTable.getChildAt(i);
+            for (int j = 0; j < tableRow.getChildCount(); j++) {
+                TextView textView = (TextView) tableRow.getChildAt(j);
+                textView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
+                int width = textView.getMeasuredWidth();
+                if (width > maxWidth[j])
+                    maxWidth[j] = width;
+            }
+        }
+    }
+
+    private void syncWidthsSecondStage() {
+        for(int i=0;i<headerRow.getChildCount();i++){
+            TableRow entriesRow = (TableRow) entriesTable.getChildAt(0);
+
+            TextView tmpEntries = (TextView) entriesRow.getChildAt(i);
+            TextView tmpHeader = (TextView) headerRow.getChildAt(i);
+
+            tmpEntries.setWidth(maxWidth[i]);
+            tmpHeader.setWidth(maxWidth[i]);
+        }
+    }
+
+    private void fakeScroll(){
+        entriesScrollView.measure(View.MeasureSpec.UNSPECIFIED,View.MeasureSpec.UNSPECIFIED);
+        int height = entriesScrollView.getMeasuredHeight();
+        dummyView.setMinimumHeight(height);
+
+        RelativeLayout.LayoutParams fakeScrollLayout = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        headerFrame.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
+        fakeScrollLayout.setMargins(0,headerFrame.getMeasuredHeight(),0,0);
+
+        fakeScrollView.setLayoutParams(fakeScrollLayout);
+    }
+
+//    @Override
+//    public void onResume() {
+//        super.onResume();
+//        if(!isFirstCreate) {
+//            getActivity().finish();
+//        } else {
+//            isFirstCreate = false;
+//        }
+//    }
+
+    @Override
+    public void onPostExecute() {
+        if(!showError) {
+            if (headerFrame.getChildCount() == 0) // You can have only one child
+                headerFrame.addView(headerRow);
+            if (entriesTable != null) {
+                syncWidthsSecondStage();
+                entriesScrollView.addView(entriesTable);
+                fakeScroll();
+            } else {
+                TextView errorMessage = new TextView(getActivity());
+                errorMessage.setText(R.string.error_no_entries);
+                errorMessage.setTypeface(null, Typeface.ITALIC);
+                errorMessage.setClickable(false);
+                entriesScrollView.addView(errorMessage);
+            }
+            setLoading(false);
+        } else {
+            setLoading(false);
+            final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+            builder.setMessage(errorMessage);
+            builder.setNeutralButton(R.string.ok, new DialogInterface.OnClickListener() {
+                @Override
+                public void onClick(DialogInterface dialogInterface, int i) {
+                    getActivity().finish();
+                }
+            });
+            builder.setTitle(R.string.info);
+            builder.setIcon(R.drawable.ic_action_info);
+            builder.create();
+            builder.show();
+        }
+    }
+
+    @Override
+    public void onStringReturn(String data) {
+        errorMessage = data;
+        showError = true;
+    }
+}

app/src/main/java/info/nerull7/mysqlbrowser/SQLFragment.java

@@ -0,0 +1,89 @@
+package info.nerull7.mysqlbrowser;
+
+import android.app.Fragment;
+import android.app.FragmentTransaction;
+import android.content.Context;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.EditText;
+
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
+
+/**
+ * Created by nerull7 on 30.09.14.
+ */
+public class SQLFragment extends Fragment implements DatabaseConnector.OnPostExecuteListener {
+    private EditText sqlEditText;
+    private InputMethodManager inputMethodManager;
+    private SQLEntriesFragment sqlEntriesFragment;
+    private FragmentTransaction fragmentTransaction;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_sql, container, false);
+        sqlEditText = (EditText) rootView.findViewById(R.id.sqlQueryText);
+        setHasOptionsMenu(true);
+        return rootView;
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
+        inputMethodManager.showSoftInput(sqlEditText, InputMethodManager.SHOW_FORCED);
+        sqlEditText.requestFocus();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()){
+            case R.id.action_execute:
+                actionExecute();
+                break;
+            case R.id.action_cancel:
+                actionCancel();
+                break;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+
+    @Override
+    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        inflater.inflate(R.menu.sql, menu);
+        super.onCreateOptionsMenu(menu, inflater);
+    }
+
+    private void actionCancel(){
+        inputMethodManager.hideSoftInputFromWindow(sqlEditText.getWindowToken(), 0);
+        getActivity().finish();
+    }
+
+    private void actionExecute(){
+        String sqlQuery = String.valueOf(sqlEditText.getText());
+        Log.d("SQLQUERY", sqlQuery);
+
+        fragmentTransaction = getFragmentManager().beginTransaction();
+        sqlEntriesFragment = new SQLEntriesFragment();
+        fragmentTransaction.replace(R.id.container, sqlEntriesFragment);
+        fragmentTransaction.commit();
+
+        Static.databaseConnector.setStringReturnListener(sqlEntriesFragment);
+        Static.databaseConnector.setListReturnListener(sqlEntriesFragment);
+        Static.databaseConnector.setMatrixReturnListener(sqlEntriesFragment);
+        Static.databaseConnector.setOnPostExecuteListener(this);
+        Static.databaseConnector.executeSQL(getActivity().getIntent().getExtras().getString(Static.DATABASE_NAME_ARG), sqlQuery);
+    }
+
+    @Override
+    public void onPostExecute() {
+        sqlEntriesFragment.onPostExecute();
+    }
+}

app/src/main/java/info/nerull7/mysqlbrowser/SettingsFragment.java

@@ -7,7 +7,6 @@ import android.preference.EditTextPreference;
 import android.preference.Preference;
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceManager;
-import android.preference.PreferenceScreen;
 import android.util.Base64;
 
 /**
@@ -15,19 +14,18 @@ import android.util.Base64;
  *
  * Fragment for Preferences/Settings
  */
-public class SettingsFragment extends PreferenceFragment implements NumberPickerDialog.OnNumberSetListener, Preference.OnPreferenceClickListener, Preference.OnPreferenceChangeListener {
+public class SettingsFragment extends PreferenceFragment implements Preference.OnPreferenceClickListener, Preference.OnPreferenceChangeListener {
     public static final String ENTRIES_PAGE_LIMIT = "entries_limit";
+    public static final String ENTRIES_PAGE_LIMIT_STRING = "entries_limit_string";
     public static final String SAVE_SERVER_CREDENTIALS = "save_credentials_enabled";
     public static final String URL_CREDENTIALS = "url";
     public static final String LOGIN_CREDENTIALS = "login";
     public static final String PASSWORD_CREDENTIALS = "password";
 
     public static final int ENTRIES_PAGE_LIMIT_DEF = 20;
-    public static final int ENTRIES_MIN_PAGE = 20;
-    public static final int ENTRIES_MAX_PAGE = 100;
 
     private SharedPreferences preferences;
-    private Preference mEntriesLimit;
+    private EditTextPreference mEntriesLimit;
     private CheckBoxPreference saveCredentials;
     private EditTextPreference connectorUrlCredentials;
     private EditTextPreference loginCredentials;
@@ -49,17 +47,18 @@ public class SettingsFragment extends PreferenceFragment implements NumberPicker
         addPreferencesFromResource(R.xml.settings);
 
         // Getting fields
-        mEntriesLimit = findPreference(ENTRIES_PAGE_LIMIT);
+        mEntriesLimit = (EditTextPreference) findPreference(ENTRIES_PAGE_LIMIT_STRING);
         saveCredentials = (CheckBoxPreference) findPreference(SAVE_SERVER_CREDENTIALS);
         connectorUrlCredentials = (EditTextPreference) findPreference(URL_CREDENTIALS);
         loginCredentials = (EditTextPreference) findPreference(LOGIN_CREDENTIALS);
         passwordCredentials = (EditTextPreference) findPreference(PASSWORD_CREDENTIALS); // TODO: Some encryption
 
         // Settings fields
-        setEntriesPageLimitSummary();
+        setEntriesPageLimit();
         setPasswordCredentials();
 
         // Settings Listener
+        mEntriesLimit.setOnPreferenceChangeListener(this);
         saveCredentials.setOnPreferenceClickListener(this);
         passwordCredentials.setOnPreferenceChangeListener(this);
     }
@@ -94,6 +93,11 @@ public class SettingsFragment extends PreferenceFragment implements NumberPicker
         mEntriesLimit.setSummary(getString(R.string.entries_summary, getEntriesPageLimit()));
     }
 
+    private void setEntriesPageLimit(){
+        mEntriesLimit.setText(String.valueOf(getEntriesPageLimit()));
+        setEntriesPageLimitSummary();
+    }
+
     private void setPasswordCredentials(){
         String password;
         password = preferences.getString(PASSWORD_CREDENTIALS, null);
@@ -114,23 +118,6 @@ public class SettingsFragment extends PreferenceFragment implements NumberPicker
         } catch (Exception e) { e.printStackTrace(); } // TODO: Something useful
     }
 
-    @Override
-    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
-        if(preference == mEntriesLimit){
-            new NumberPickerDialog(getActivity(), this, getEntriesPageLimit(), ENTRIES_MIN_PAGE, ENTRIES_MAX_PAGE, R.string.entries_limit).show();
-        }
-
-        return super.onPreferenceTreeClick(preferenceScreen, preference);
-    }
-
-    @Override
-    public void onNumberSet(int number) {
-        SharedPreferences.Editor editor = preferences.edit();
-        editor.putInt(ENTRIES_PAGE_LIMIT, number);
-        editor.apply();
-        setEntriesPageLimitSummary();
-    }
-
     @Override
     public boolean onPreferenceClick(Preference preference) {
         if(preference==saveCredentials){
@@ -146,7 +133,16 @@ public class SettingsFragment extends PreferenceFragment implements NumberPicker
     public boolean onPreferenceChange(Preference preference, Object newValue) {
         if(preference == passwordCredentials){
             savePassword((String) newValue);
+        } else if (preference == mEntriesLimit) {
+            saveEntriesLimit((String) newValue);
         }
         return false;
     }
+
+    private void saveEntriesLimit(String newValue) {
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putInt(ENTRIES_PAGE_LIMIT, Integer.parseInt(newValue));
+        editor.apply();
+        setEntriesPageLimit();
+    }
 }

app/src/main/java/info/nerull7/mysqlbrowser/Static.java

@@ -7,7 +7,7 @@ import android.content.Intent;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 14.07.14.
@@ -20,7 +20,7 @@ public class Static {
     public static final String FRAGMENT_DATABASE = "DatabaseFragment";
     public static final String FRAGMENT_TABLE = "TableFragment";
 
-    public static AsyncDatabaseConnector asyncDatabaseConnector = null;
+    public static DatabaseConnector databaseConnector = null;
 
     public static void startSettings(Context context){
         Intent intent = new Intent(context, SettingsActivity.class);
@@ -51,4 +51,10 @@ public class Static {
         builder.create();
         builder.show();
     }
+
+    public static void startSQL(Context context, String database) {
+        Intent intent = new Intent(context, SQLActivity.class);
+        intent.putExtra(Static.DATABASE_NAME_ARG, database);
+        context.startActivity(intent);
+    }
 }

app/src/main/java/info/nerull7/mysqlbrowser/TableFragment.java

@@ -17,17 +17,18 @@ import android.widget.TextView;
 
 import java.util.List;
 
-import info.nerull7.mysqlbrowser.db.AsyncDatabaseConnector;
+import info.nerull7.mysqlbrowser.db.DatabaseConnector;
 
 /**
  * Created by nerull7 on 14.07.14.
  */
-public class TableFragment extends Fragment implements AdapterView.OnItemClickListener, AsyncDatabaseConnector.ListReturnListener{
+public class TableFragment extends Fragment implements AdapterView.OnItemClickListener, DatabaseConnector.ListReturnListener, DatabaseConnector.OnPostExecuteListener {
     private String databaseName;
     private ListView tablesList;
     private ListAdapter listAdapter;
     private RelativeLayout rootView;
     private ProgressBar progressBar;
+    private List<String> tables;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -37,8 +38,9 @@ public class TableFragment extends Fragment implements AdapterView.OnItemClickLi
         tablesList = (ListView) rootView.findViewById(R.id.tableList);
         this.rootView = (RelativeLayout) rootView;
         progressBar = (ProgressBar) rootView.findViewById(R.id.loginProgressBar);
-        Static.asyncDatabaseConnector.setListReturnListener(this);
-        Static.asyncDatabaseConnector.getTables();
+        Static.databaseConnector.setListReturnListener(this);
+        Static.databaseConnector.setOnPostExecuteListener(this);
+        Static.databaseConnector.getTables();
         return rootView;
     }
 
@@ -59,6 +61,11 @@ public class TableFragment extends Fragment implements AdapterView.OnItemClickLi
 
     @Override
     public void onListReturn(List<String> tables) {
+        this.tables = tables;
+    }
+
+    @Override
+    public void onPostExecute() {
         if(tables != null) {
             listAdapter = new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_1, tables);
             tablesList.setAdapter(listAdapter);

app/src/main/java/info/nerull7/mysqlbrowser/db/AsyncDatabaseConnector.java

@@ -1,330 +0,0 @@
-package info.nerull7.mysqlbrowser.db;
-
-import android.os.AsyncTask;
-import android.util.Log;
-
-import org.json.JSONArray;
-import org.json.JSONException;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.HttpURLConnection;
-import java.net.URL;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Created by nerull7 on 07.07.14.
- * Database connector using Async calls
- */
-public class AsyncDatabaseConnector {
-    public static final String ACTION_LOGIN = "login";
-    public static final String ACTION_DATABASE_LIST = "dblist";
-    public static final String ACTION_TABLE_LIST = "tablelist";
-    public static final String ACTION_FIELD_LIST = "fieldlist";
-    public static final String ACTION_ENTRIES_COUNT = "numrows";
-    public static final String ACTION_DATA_MATRIX = "getrows";
-    public static final String ACTION_ADD_ELEMENT = "addelement";
-    public static final String ACTION_UPDATE_ELEMENT = "updateelement";
-
-    private String login;
-    private String password;
-    private String url;
-
-    private String database;
-
-    private BooleanReturnListener booleanReturnListener;
-    private IntegerReturnListener integerReturnListener;
-    private StringReturnListener stringReturnListener;
-    private ListReturnListener listReturnListener;
-    private MatrixReturnListener matrixReturnListener;
-
-    public static String errorMsg;
-
-    public AsyncDatabaseConnector(String login, String password, String url){
-        this.login = login;
-        this.password = password;
-        this.url = url;
-
-        booleanReturnListener=null;
-        stringReturnListener=null;
-        listReturnListener=null;
-        matrixReturnListener=null;
-    }
-
-    private String actionUrlBuilder(String action){ // TODO Better UrlBuilder this is shit only for use
-        String urlBuilder = url;
-        urlBuilder += "?u="+login;
-        urlBuilder += "&p="+password;
-        urlBuilder += "&a="+action;
-//        Log.d("URLBuilder", urlBuilder);
-        return urlBuilder;
-    }
-
-    public void setDatabaseInUse(String database){
-        this.database = database;
-    }
-
-    private void getList(String urlQuery){
-        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
-            @Override
-            public void onFinished(String data, String error) {
-                List<String>list = null;
-                try {
-                    list = parseListFromJSON(data);
-                } catch (JSONException e) { e.printStackTrace(); }
-                if(listReturnListener!=null)
-                    listReturnListener.onListReturn(list);
-            }
-        });
-        downloader.execute(urlQuery);
-    }
-
-    private void getMatrix(String urlQuery){
-        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
-            @Override
-            public void onFinished(String data, String error) {
-                List<List<String>> list = null;
-                try {
-                    list = parseMatrixFromJSON(data);
-                } catch (JSONException e) { e.printStackTrace(); }
-                if(matrixReturnListener!=null)
-                    matrixReturnListener.onMatrixReturn(list);
-            }
-        });
-        downloader.execute(urlQuery);
-    }
-
-    private List<String> parseListFromJSON(String jsonListString) throws JSONException {
-        JSONArray jsonArray = new JSONArray(jsonListString);
-        List<String> databaseStringList = new ArrayList<String>();
-        for(int i=0;i<jsonArray.length();i++){
-            databaseStringList.add(jsonArray.getString(i));
-        }
-        return databaseStringList;
-    }
-
-    private List<List<String>> parseMatrixFromJSON(String jsonMatrixString) throws JSONException {
-        JSONArray jsonMatrix = new JSONArray(jsonMatrixString);
-        List<List<String>> matrix = new ArrayList<List<String>>();
-        for(int i=0;i<jsonMatrix.length();i++){
-            JSONArray jsonArray = jsonMatrix.getJSONArray(i);
-            List<String> list = new ArrayList<String>();
-            for(int j=0;j<jsonArray.length();j++){
-                list.add(jsonArray.getString(j));
-            }
-            matrix.add(list);
-        }
-        return matrix;
-    }
-
-    public boolean checkLogin(){
-        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
-            @Override
-            public void onFinished(String data, String error) {
-                boolean listenerData;
-                if(data == null) {
-                    listenerData = false;
-                    errorMsg = error;
-                } else if( data.compareTo("OK") == 0){
-                    listenerData = true;
-                } else {
-                    errorMsg = data;
-                    listenerData = false;
-                }
-
-                booleanReturnListener.onBooleanReturn(listenerData);
-            }
-        });
-        downloader.execute(actionUrlBuilder(ACTION_LOGIN));
-        return false;
-    }
-
-    public void getDatabases(){
-        getList(actionUrlBuilder(ACTION_DATABASE_LIST));
-    }
-
-    public void getTables(){
-        getList(actionUrlBuilder(ACTION_TABLE_LIST)+"&d="+database);
-    }
-
-    public void getFields(String table){
-        getList(actionUrlBuilder(ACTION_FIELD_LIST)+"&d="+database+"&t="+table);
-    }
-
-    public void getRows(String table, int count, int page){
-        int limitStart = (page-1) * count;
-        getMatrix(actionUrlBuilder(ACTION_DATA_MATRIX)+"&d="+database+"&t="+table+"&s="+limitStart+"&l="+count);
-    }
-
-    public void getEntriesCount(String table){
-        String urlQuery = actionUrlBuilder(ACTION_ENTRIES_COUNT)+"&d="+database+"&t="+table;
-        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
-            @Override
-            public void onFinished(String data, String error) {
-                if(integerReturnListener!=null)
-                    integerReturnListener.onIntegerReturn(Integer.parseInt(data));
-            }
-        });
-        downloader.execute(urlQuery);
-    }
-
-    public void addNewElement(String table, List<String> header, List<String> values) {
-        this.updateElement(table, header, null, values);
-    }
-
-    public void updateElement(String table, List<String> header, List<String> oldValues, List<String> newValues){
-        JSONArray headerJSON = new JSONArray();
-        JSONArray newValuesJSON = new JSONArray();
-        String request;
-
-        for (String aHeader : header) {
-            headerJSON.put(aHeader);
-        }
-
-        for (String newValue : newValues) {
-            newValuesJSON.put(newValue);
-        }
-
-        if(oldValues!=null){
-            JSONArray oldValuesJSON = new JSONArray();
-            for(int i=0;i<newValues.size();i++){
-                oldValuesJSON.put(oldValues.get(i));
-            }
-            request = actionUrlBuilder(ACTION_UPDATE_ELEMENT)+"&d="+database+"&t="+table+"&h="+headerJSON+"&v="+newValuesJSON+"&o="+oldValuesJSON;
-        } else
-            request = actionUrlBuilder(ACTION_ADD_ELEMENT)+"&d="+database+"&t="+table+"&h="+headerJSON+"&v="+newValuesJSON;
-
-        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
-            @Override
-            public void onFinished(String data, String error) {
-                if(stringReturnListener!=null){
-                    stringReturnListener.onStringReturn(data);
-                }
-            }
-        });
-        downloader.execute(request);
-    }
-
-    public void setBooleanReturnListener(BooleanReturnListener booleanReturnListener){
-        this.booleanReturnListener = booleanReturnListener;
-    }
-
-    public void setStringReturnListener(StringReturnListener stringReturnListener) {
-        this.stringReturnListener = stringReturnListener;
-    }
-
-    public void setIntegerReturnListener(IntegerReturnListener integerReturnListener){
-        this.integerReturnListener = integerReturnListener;
-    }
-
-    public void setListReturnListener(ListReturnListener listReturnListener) {
-        this.listReturnListener = listReturnListener;
-    }
-
-    public void setMatrixReturnListener(MatrixReturnListener matrixReturnListener) {
-        this.matrixReturnListener = matrixReturnListener;
-    }
-
-    public static interface BooleanReturnListener{
-        public void onBooleanReturn(boolean result);
-    }
-
-    public static interface IntegerReturnListener{
-        public void onIntegerReturn(int result);
-    }
-
-    public static interface StringReturnListener{
-        public void onStringReturn(String data);
-    }
-
-    public static interface ListReturnListener {
-        public void onListReturn(List<String> data);
-    }
-
-    public static interface MatrixReturnListener{
-        public void onMatrixReturn(List<List<String>> data);
-    }
-
-    private static class Downloader extends AsyncTask<String, Void, String> {
-        private OnFinishedListener onFinishedListener;
-        private String errorString;
-
-        public static final String CONNECTION_REQUEST_METHOD = "GET";
-        public static final int CONNECTION_TIMEOUT = 15000;
-        public static final int READ_TIMEOUT = 10000;
-
-        Downloader(OnFinishedListener onFinishedListener){
-            this.onFinishedListener = onFinishedListener;
-            errorString = null;
-        }
-
-        private String httpRequest(String urlRequest) throws IOException {
-            URL url = new URL(urlRequest);
-            InputStream inputStream = null;
-            String response;
-
-            Log.d("URL REQUEST", urlRequest);
-
-            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();  // TODO Handling no connection
-            urlConnection.setReadTimeout(READ_TIMEOUT);
-            urlConnection.setConnectTimeout(CONNECTION_TIMEOUT);
-            urlConnection.setRequestMethod(CONNECTION_REQUEST_METHOD);
-            urlConnection.connect();
-
-            if(urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
-                try {
-                    inputStream = urlConnection.getInputStream();
-                    response = readStream(inputStream);
-                } finally {
-                    if(inputStream!=null)
-                        inputStream.close();
-                    urlConnection.disconnect();
-                }
-                return response;
-            }
-            else {
-                errorString = "ERROR "+urlConnection.getResponseCode()+": "+urlConnection.getResponseMessage();
-                return null;
-            }
-        }
-
-        private String readStream(InputStream in) throws IOException {
-            String streamOutput = "";
-            BufferedReader reader = null;
-            try {
-                reader = new BufferedReader(new InputStreamReader(in));
-                String line;
-                while ((line = reader.readLine()) != null) {
-                    streamOutput += line;
-                }
-            } finally {
-                if (reader != null) {
-                    reader.close();
-                }
-            }
-            return streamOutput;
-        }
-
-        @Override
-        protected String doInBackground(String... strings) {
-            try {
-                return httpRequest(strings[0]);
-            } catch (IOException e) {
-                e.printStackTrace();
-            }
-            return null;
-        }
-
-        @Override
-        protected void onPostExecute(String data) {
-            onFinishedListener.onFinished(data, errorString); // Can't be null cos we demand listener in constructor
-        }
-
-        private static interface OnFinishedListener {
-            void onFinished(String data, String error);
-        }
-    }
-}

app/src/main/java/info/nerull7/mysqlbrowser/db/DatabaseConnector.java

@@ -0,0 +1,565 @@
+package info.nerull7.mysqlbrowser.db;
+
+import android.content.res.Resources;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.UnsupportedEncodingException;
+import java.net.HttpURLConnection;
+import java.net.SocketException;
+import java.net.SocketTimeoutException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.util.ArrayList;
+import java.util.List;
+
+import info.nerull7.mysqlbrowser.R;
+
+/**
+ * Created by nerull7 on 07.07.14.
+ * Database connector using Async calls
+ */
+public class DatabaseConnector {
+    public static final String ACTION_LOGIN = "login";
+    public static final String ACTION_DATABASE_LIST = "dblist";
+    public static final String ACTION_TABLE_LIST = "tablelist";
+    public static final String ACTION_FIELD_LIST = "fieldlist";
+    public static final String ACTION_ENTRIES_COUNT = "numrows";
+    public static final String ACTION_DATA_MATRIX = "getrows";
+    public static final String ACTION_ADD_ELEMENT = "addelement";
+    public static final String ACTION_UPDATE_ELEMENT = "updateelement";
+    public static final String ACTION_REMOVE_ELEMENT = "removeelement";
+    public static final String ACTION_SQL_QUERY = "query";
+
+    private String login;
+    private String password;
+    private String url;
+
+    private String database;
+
+    private final Resources resources;
+
+    private BooleanReturnListener booleanReturnListener;
+    private IntegerReturnListener integerReturnListener;
+    private StringReturnListener stringReturnListener;
+    private ListReturnListener listReturnListener;
+    private MatrixReturnListener matrixReturnListener;
+
+    public static String errorMsg;
+    private OnPostExecuteListener onPostExecuteListener;
+
+    public DatabaseConnector(String login, String password, String url, Resources resources){
+        this.login = login;
+        this.password = password;
+        this.url = url;
+        this.resources = resources;
+
+        booleanReturnListener=null;
+        stringReturnListener=null;
+        listReturnListener=null;
+        matrixReturnListener=null;
+    }
+
+    private Request requestBuilder(String action){
+        Request request = new Request(url);
+        String urlData   = "u="+login
+                         + "&p="+password
+                         + "&a="+action;
+        request.data = urlData;
+
+        return request;
+    }
+
+    private Request actionUrlBuilder(String action, String argument, String value){
+        ArrayList<String> arguments = new ArrayList<String>();
+        ArrayList<String> values = new ArrayList<String>();
+        arguments.add(argument);
+        values.add(value);
+        return this.actionUrlBuilder(action, arguments, values);
+    }
+
+    private Request actionUrlBuilder(String action, List<String> arguments, List<String> values){ // TODO Better UrlBuilder this is shit only for use
+        Request urlBuilder = requestBuilder(action);
+        for (int i = 0; i < arguments.size(); i++) {
+            try {
+                urlBuilder.data += "&" + arguments.get(i) + "=" + URLEncoder.encode(values.get(i), "UTF-8");
+            } catch (UnsupportedEncodingException e) {
+                e.printStackTrace();
+            }
+        }
+//        Log.d("URLBuilder", urlBuilder);
+        return urlBuilder;
+    }
+
+    public void setDatabaseInUse(String database){
+        this.database = database;
+    }
+
+    private void getList(Request urlQuery){
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                List<String>list = null;
+                try {
+                    list = parseListFromJSON(data);
+                } catch (JSONException e) { e.printStackTrace(); }
+                if(listReturnListener!=null) {
+                    listReturnListener.onListReturn(list);
+                }
+                errorMsg = error;
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(urlQuery);
+    }
+
+    private void getMatrix(Request urlQuery){
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                List<List<String>> list = null;
+                try {
+                    list = parseMatrixFromJSON(data);
+                } catch (JSONException e) { e.printStackTrace(); }
+                if(matrixReturnListener!=null)
+                    matrixReturnListener.onMatrixReturn(list);
+                errorMsg = error;
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(urlQuery);
+    }
+
+    private List<String> parseListFromJSON(String jsonListString) throws JSONException {
+        JSONArray jsonArray = new JSONArray(jsonListString);
+        List<String> databaseStringList = new ArrayList<String>();
+        for(int i=0;i<jsonArray.length();i++){
+            databaseStringList.add(jsonArray.getString(i));
+        }
+        return databaseStringList;
+    }
+
+    private List<List<String>> parseMatrixFromJSON(String jsonMatrixString) throws JSONException {
+        JSONArray jsonMatrix = new JSONArray(jsonMatrixString);
+        List<List<String>> matrix = new ArrayList<List<String>>();
+        for(int i=0;i<jsonMatrix.length();i++){
+            JSONArray jsonArray = jsonMatrix.getJSONArray(i);
+            List<String> list = new ArrayList<String>();
+            for(int j=0;j<jsonArray.length();j++){
+                list.add(jsonArray.getString(j));
+            }
+            matrix.add(list);
+        }
+        return matrix;
+    }
+
+    public boolean checkLogin(){
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                boolean listenerData;
+                if(data == null) {
+                    listenerData = false;
+                    errorMsg = error;
+                } else if( data.compareTo("OK") == 0){
+                    listenerData = true;
+                } else {
+                    errorMsg = data;
+                    listenerData = false;
+                }
+                booleanReturnListener.onBooleanReturn(listenerData);
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(requestBuilder(ACTION_LOGIN));
+        return false;
+    }
+
+    public void getDatabases(){
+        getList(requestBuilder(ACTION_DATABASE_LIST));
+    }
+
+    public void getTables(){
+        getList(actionUrlBuilder(ACTION_TABLE_LIST, "d", database));
+    }
+
+    public void getFields(String table){
+        ArrayList<String> args = new ArrayList<String>();
+        ArrayList<String> values = new ArrayList<String>();
+
+        args.add("d");
+        values.add(database);
+
+        args.add("t");
+        values.add(table);
+
+        getList(actionUrlBuilder(ACTION_FIELD_LIST, args, values));
+    }
+
+    public void getRows(String table, int count, int page){
+        int limitStart = (page-1) * count;
+        ArrayList<String> args = new ArrayList<String>();
+        ArrayList<String> values = new ArrayList<String>();
+
+        args.add("d");
+        values.add(database);
+
+        args.add("t");
+        values.add(table);
+
+        args.add("s");
+        values.add(String.valueOf(limitStart));
+
+        args.add("l");
+        values.add(String.valueOf(count));
+
+        getMatrix(actionUrlBuilder(ACTION_DATA_MATRIX, args, values));
+    }
+
+    public void getEntriesCount(String table){
+        ArrayList<String> args = new ArrayList<String>();
+        ArrayList<String> values = new ArrayList<String>();
+
+        args.add("d");
+        values.add(database);
+
+        args.add("t");
+        values.add(table);
+
+        Request urlQuery = actionUrlBuilder(ACTION_ENTRIES_COUNT, args, values);
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                if(integerReturnListener!=null)
+                    integerReturnListener.onIntegerReturn(Integer.parseInt(data));
+                errorMsg = error;
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(urlQuery);
+    }
+
+    public void addNewElement(String table, List<String> header, List<String> values) {
+        this.updateElement(table, header, null, values);
+    }
+
+    public void updateElement(String table, List<String> header, List<String> oldValues, List<String> newValues){
+        JSONArray headerJSON = new JSONArray();
+        JSONArray newValuesJSON = new JSONArray();
+        Request request;
+
+        ArrayList<String> args = new ArrayList<String>();
+        ArrayList<String> values = new ArrayList<String>();
+
+        args.add("d");
+        values.add(database);
+
+        args.add("t");
+        values.add(table);
+
+        for (String aHeader : header) {
+            headerJSON.put(aHeader);
+        }
+
+        for (String newValue : newValues) {
+            newValuesJSON.put(newValue);
+        }
+
+        args.add("h");
+        values.add(headerJSON.toString());
+
+        args.add("v");
+        values.add(newValuesJSON.toString());
+
+        if(oldValues!=null){
+            JSONArray oldValuesJSON = new JSONArray();
+            for(int i=0;i<newValues.size();i++){
+                oldValuesJSON.put(oldValues.get(i));
+            }
+            args.add("o");
+            values.add(oldValuesJSON.toString());
+            request = actionUrlBuilder(ACTION_UPDATE_ELEMENT, args, values);
+        } else
+            request = actionUrlBuilder(ACTION_ADD_ELEMENT, args, values);
+
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                if(stringReturnListener!=null){
+                    stringReturnListener.onStringReturn(data);
+                }
+                errorMsg = error;
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(request);
+    }
+
+    public void removeElement(String table, List<String> header, List<String> values) {
+        JSONArray headerJSON = new JSONArray();
+        JSONArray valuesJSON = new JSONArray();
+        Request request;
+
+        ArrayList<String> args = new ArrayList<String>();
+        ArrayList<String> argValues = new ArrayList<String>();
+
+        args.add("d");
+        argValues.add(database);
+
+        args.add("t");
+        argValues.add(table);
+
+        for (String aHeader : header) {
+            headerJSON.put(aHeader);
+        }
+
+        for (String value : values) {
+            valuesJSON.put(value);
+        }
+
+        args.add("h");
+        argValues.add(headerJSON.toString());
+
+        args.add("v");
+        argValues.add(valuesJSON.toString());
+
+        request = actionUrlBuilder(ACTION_REMOVE_ELEMENT, args, argValues);
+
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                if(stringReturnListener!=null){
+                    stringReturnListener.onStringReturn(data);
+                }
+                errorMsg = error;
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(request);
+    }
+
+    public void executeSQL(String database, String query){
+        ArrayList<String> args = new ArrayList();
+        ArrayList<String> values = new ArrayList();
+        final Request request;
+
+        if(database!=null){
+            args.add("d");
+            values.add(database);
+        }
+        args.add("q");
+        values.add(query);
+
+        request = actionUrlBuilder(ACTION_SQL_QUERY, args, values);
+
+        Downloader downloader = new Downloader(new Downloader.OnFinishedListener() {
+            @Override
+            public void onFinished(String data, String error) {
+                String []response = data.split("\n");
+
+                if(response[0].equals("OK")) {
+                    List<String> headerList = null;
+                    try {
+                        headerList = parseListFromJSON(response[1]);
+                    } catch (JSONException e) {
+                        e.printStackTrace();
+                    }
+                    if (listReturnListener != null) {
+                        listReturnListener.onListReturn(headerList);
+                    }
+
+                    List<List<String>> dataMatrix = null;
+                    try {
+                        dataMatrix = parseMatrixFromJSON(response[2]);
+                    } catch (JSONException e) {
+                        e.printStackTrace();
+                    }
+                    if (matrixReturnListener != null)
+                        matrixReturnListener.onMatrixReturn(dataMatrix);
+                } else {
+                    if(stringReturnListener!=null)
+                        stringReturnListener.onStringReturn(data);
+                }
+            }
+        }, onPostExecuteListener, resources);
+        downloader.execute(request);
+    }
+
+    public void setBooleanReturnListener(BooleanReturnListener booleanReturnListener){
+        this.booleanReturnListener = booleanReturnListener;
+    }
+
+    public void setStringReturnListener(StringReturnListener stringReturnListener) {
+        this.stringReturnListener = stringReturnListener;
+    }
+
+    public void setIntegerReturnListener(IntegerReturnListener integerReturnListener){
+        this.integerReturnListener = integerReturnListener;
+    }
+
+    public void setListReturnListener(ListReturnListener listReturnListener) {
+        this.listReturnListener = listReturnListener;
+    }
+
+    public void setMatrixReturnListener(MatrixReturnListener matrixReturnListener) {
+        this.matrixReturnListener = matrixReturnListener;
+    }
+
+    public void setOnPostExecuteListener(OnPostExecuteListener onPostExecuteListener){
+        this.onPostExecuteListener = onPostExecuteListener;
+    }
+
+    public static interface BooleanReturnListener{
+        public void onBooleanReturn(boolean result);
+    }
+
+    public static interface IntegerReturnListener{
+        public void onIntegerReturn(int result);
+    }
+
+    public static interface StringReturnListener{
+        public void onStringReturn(String data);
+    }
+
+    public static interface ListReturnListener {
+        public void onListReturn(List<String> data);
+    }
+
+    public static interface MatrixReturnListener{
+        public void onMatrixReturn(List<List<String>> data);
+    }
+
+    public static interface OnPostExecuteListener {
+        void onPostExecute();
+    }
+
+    private static class Downloader extends AsyncTask<Request, Void, String> {
+        private OnFinishedListener onFinishedListener;
+        private OnPostExecuteListener onPostExecuteListener;
+        private String errorString;
+        private Resources resources;
+
+        public static final String CONNECTION_REQUEST_METHOD = "POST";
+        public static final int CONNECTION_TIMEOUT = 15000; // ms
+        public static final int READ_TIMEOUT = 10000; // ms
+
+        private Downloader(OnFinishedListener onFinishedListener, OnPostExecuteListener onPostExecuteListener, Resources resources){
+            this.onFinishedListener = onFinishedListener;
+            this.onPostExecuteListener = onPostExecuteListener;
+            this.resources = resources;
+            errorString = null;
+        }
+
+        private String httpRequest(Request urlRequest) throws IOException {
+            URL url = new URL(urlRequest.url);
+            InputStream inputStream = null;
+            String response;
+
+//            Log.d("URL REQUEST", urlRequest);
+
+            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();  // TODO Handling no connection
+            urlConnection.setReadTimeout(READ_TIMEOUT);
+            urlConnection.setConnectTimeout(CONNECTION_TIMEOUT);
+            urlConnection.setRequestMethod(CONNECTION_REQUEST_METHOD);
+
+            OutputStream outputStream = urlConnection.getOutputStream();
+            OutputStreamWriter outputStreamWriter = new OutputStreamWriter(outputStream);
+            outputStreamWriter.write(urlRequest.data);
+            outputStreamWriter.flush();
+            outputStreamWriter.close();
+            outputStream.close();
+
+            try {
+                urlConnection.connect();
+
+                if (urlConnection.getResponseCode() == HttpURLConnection.HTTP_OK) {
+                    try {
+                        inputStream = urlConnection.getInputStream();
+                        response = readStream(inputStream);
+                    } finally {
+                        if (inputStream != null)
+                            inputStream.close();
+                        urlConnection.disconnect();
+                    }
+                    return response;
+                } else {
+                    errorString = "ERROR " + urlConnection.getResponseCode() + ": " + urlConnection.getResponseMessage();
+                }
+            } catch (Exception e) {
+                parseException(e);
+            }
+            return null;
+        }
+
+        private void parseException(Exception e){
+            if(e instanceof SocketException){
+                if(e.getMessage().contains("ECONNREFUSED")) {
+                    errorString = resources.getString(R.string.error_connection_refused);
+                } else if(e.getMessage().contains("EHOSTUNREACH")) {
+                    errorString = resources.getString(R.string.error_connection_unreachable);
+                } else {
+                    errorString = "Exception: " + e.getClass();
+                }
+            } else if (e instanceof  SocketTimeoutException){
+                errorString = resources.getString(R.string.error_connection_timeout);
+            } else {
+                errorString = "Exception: " + e.getClass();
+            }
+        }
+
+        private String readStream(InputStream in) throws IOException {
+            String streamOutput = "";
+            BufferedReader reader = null;
+            try {
+                reader = new BufferedReader(new InputStreamReader(in));
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    streamOutput += line + '\n';
+                }
+            } finally {
+                if (reader != null) {
+                    reader.close();
+                }
+            }
+            return streamOutput.substring(0, streamOutput.length()-1); // Remove last \n
+        }
+
+        @Override
+        protected String doInBackground(Request... requests) {
+            try {
+                String data = httpRequest(requests[0]);
+                onFinishedListener.onFinished(data, errorString); // Can't be null cos we demand listener in constructor
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+            return null;
+        }
+
+        @Override
+        protected void onPostExecute(String data) {
+            if (onPostExecuteListener!=null)
+                onPostExecuteListener.onPostExecute();
+        }
+
+        public void setOnPostExecuteListener(OnPostExecuteListener onPostExecuteListener) {
+            this.onPostExecuteListener = onPostExecuteListener;
+        }
+
+        private static interface OnFinishedListener {
+            void onFinished(String data, String error);
+        }
+
+    }
+
+    class Request{
+        String url;
+        String data;
+
+        Request(String url){
+            this.url = url;
+        }
+    }
+}

app/src/main/res/layout/activity_sql.xml

@@ -0,0 +1,7 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="info.nerull7.mysqlbrowser.ListActivity"
+    tools:ignore="MergeRootFrame" />

app/src/main/res/layout/fragment_element.xml

@@ -18,6 +18,7 @@
         android:id="@+id/listView"
         android:layout_below="@+id/progressBar"
         android:layout_alignParentLeft="true"
-        android:layout_alignParentStart="true" />
+        android:layout_alignParentStart="true"
+        android:descendantFocusability="afterDescendants"/>
 
 </RelativeLayout>

app/src/main/res/layout/fragment_entries.xml

@@ -26,11 +26,11 @@
                 android:id="@+id/entriesScrollView"
                 android:layout_below="@+id/headerFrame"
                 android:scrollbars="none">
-                <TableLayout
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:id="@+id/entriesTable">
-                </TableLayout>
+                <!--<TableLayout-->
+                    <!--android:layout_width="wrap_content"-->
+                    <!--android:layout_height="wrap_content"-->
+                    <!--android:id="@+id/entriesTable">-->
+                <!--</TableLayout>-->
             </ScrollView>
         </RelativeLayout>
     </HorizontalScrollView>

app/src/main/res/layout/fragment_sql.xml

@@ -0,0 +1,24 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="info.nerull7.mysqlbrowser.DatabaseFragment">
+
+
+    <EditText
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:inputType="textMultiLine"
+        android:ems="10"
+        android:id="@+id/sqlQueryText"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentStart="true"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentRight="true"
+        android:layout_alignParentEnd="true"
+        android:gravity="left|top"
+        android:hint="@string/hint_sql_query" >
+        <requestFocus/>
+    </EditText>
+</RelativeLayout>

app/src/main/res/menu/element.xml

@@ -7,4 +7,9 @@
         android:showAsAction="always"
         android:icon="@drawable/ic_action_save"/>
 
+    <item android:id="@+id/action_remove"
+        android:title="@string/action_remove"
+        android:showAsAction="always"
+        android:icon="@drawable/ic_action_delete"/>
+
 </menu>

app/src/main/res/menu/logged.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:id="@+id/action_settings"
+        android:title="@string/action_settings"
+        android:orderInCategory="100"
+        android:showAsAction="never" />
+    <item android:id="@+id/action_sql"
+        android:title="@string/sql_query"
+        android:orderInCategory="200"
+        android:showAsAction="never" />
+</menu>

app/src/main/res/menu/sql.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <item android:id="@+id/action_execute"
+        android:title="@string/action_execute"
+        android:showAsAction="always"
+        android:icon="@drawable/ic_action_file_upload"/>
+
+    <item android:id="@+id/action_cancel"
+        android:title="@string/action_cancel"
+        android:showAsAction="always"
+        android:icon="@drawable/ic_action_delete"/>
+
+</menu>

app/src/main/res/values-pl/strings.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Przeglądarka Mysql</string>
+
+    <string name="action_settings">Ustawienia</string>
+    <string name="action_add">Dodaj nowy</string>
+    <string name="action_remove">Usuń</string>
+    <string name="action_previous">Poprzedni</string>
+    <string name="action_next">Następny</string>
+
+    <string name="title_fragment_database">Dostępne bazy</string>
+
+    <string name="login">Zaloguj</string>
+    <string name="password">Hasło</string>
+    <string name="username">Użytkownik</string>
+
+    <string name="yes">Tak</string>
+    <string name="no">Nie</string>
+    <string name="ok">OK</string>
+    <string name="cancel">Anuluj</string>
+    <string name="action_save">Zapisz</string>
+    <string name="set">Ustaw</string>
+    <string name="back">Cofnij</string>
+
+    <string name="status">Info</string>
+    <string name="warning">Ostrzeżenie</string>
+    <string name="error">Błąd</string>
+
+    <string name="login_error">Zły login/hasło</string>
+
+    <string name="general_category">Ogólne</string>
+    <string name="entries_limit">Limit wpisów na stronę</string>
+    <string name="entries_summary">%s na stronę</string> <!-- <xliff:g id="count"></xliff:g> -->
+
+    <string name="error_no_tables">Brak tabel w tej bazie</string>
+    <string name="error_no_entries">Brak wpisów w tej bazie</string>
+    <string name="error_no_databases">Brak dostępnych baz</string>
+    <string name="error_no_save">Twoje dane <b>NIE</b> zostaną zapisane! Czy chciałbyś kontynuować?</string>
+    <string name="error_remove">Ten wpis zostanie usunięty z bazy. Tej akcji <b>NIE MOŻNA</b> cofnąć! Czy chciałbyś kontynuować?</string>
+    <string name="error_connection_timeout">Przekroczono czas połączenia</string>
+    <string name="error_connection_reset">Połączenie zostało zrestartowane</string>
+    <string name="error_connection_unreachable">No route to host</string>
+
+    <string name="pref_entries_per_page">Ustaw limit wpisów na stronę</string>
+    <string name="login_settings">Poświadczenia logowania</string>
+    <string name="save_credentials">Zapamiętaj poświadczenia</string>
+    <string name="connector_url">URL Wtyczki php</string>
+    <string name="no_connection">Brak połączenia internetowego</string>
+
+</resources>

app/src/main/res/values/strings.xml

@@ -1,43 +1,63 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-
     <string name="app_name">Mysql Browser</string>
+
     <string name="action_settings">Settings</string>
+    <string name="action_add">Add new</string>
+    <string name="action_remove">Remove</string>
+    <string name="action_previous">Previous</string>
+    <string name="action_next">Next</string>
+
+    <string name="title_activity_main">MainActivity</string>
+    <string name="title_activity_entries">EntriesActivity</string>
+    <string name="title_activity_setting">Settings</string>
+    <string name="title_activity_element">ElementActivity</string>
+    <string name="title_activity_list">ListActivity</string>
+    <string name="title_fragment_database">Available Databases</string>
+
     <string name="login">Log in</string>
     <string name="password">Password</string>
     <string name="username">Username</string>
     <string name="hint_url">URL ex: https://example.com/c.php</string>
-    <string name="title_activity_main">MainActivity</string>
-    <string name="hello_world">Hello world!</string>
-    <string name="login_error">Wrong login/password</string>
+
+    <string name="yes">Yes</string>
+    <string name="no">No</string>
     <string name="ok">OK</string>
+    <string name="cancel">Cancel</string>
+    <string name="action_save">Save</string>
+    <string name="set">Set</string>
+    <string name="back">Back</string>
+
+    <string name="status">Status</string>
+    <string name="warning">Warning</string>
     <string name="error">Error</string>
-    <string name="title_activity_entries">EntriesActivity</string>
+
+    <string name="login_error">Wrong login/password</string>
+
     <string name="general_category">General</string>
     <string name="entries_limit">Entries per page limit</string>
     <string name="entries_summary">%s entries per page</string> <!-- <xliff:g id="count"></xliff:g> -->
-    <string name="title_activity_setting">Settings</string>
-    <string name="cancel">Cancel</string>
-    <string name="set">Set</string>
-    <string name="pref_entries_per_page">Set number of entries per page</string>
+
     <string name="error_no_tables">No tables in this database</string>
     <string name="error_no_entries">No entries in this table</string>
     <string name="error_no_databases">No available databases</string>
-    <string name="action_previous">Previous</string>
-    <string name="action_next">Next</string>
+    <string name="error_no_save">Your data will <b>NOT</b> be saved! Would you like to continue?</string>
+    <string name="error_remove">This entry will be removed from database. This action <b>CAN NOT</b> be reversed! Would you like to continue?</string>
+    <string name="error_connection_timeout">Connection timeout</string>
+    <string name="error_connection_reset">Connection reset by peer</string>
+    <string name="error_connection_refused">Connection refused</string>
+    <string name="error_connection_unreachable">No route to host</string>
+
+    <string name="pref_entries_per_page">Set number of entries per page</string>
     <string name="login_settings">Login credentials</string>
     <string name="save_credentials">Save credentials</string>
     <string name="connector_url">Connector URL</string>
     <string name="no_connection">No Internet Connection</string>
-    <string name="action_add">Add new</string>
-    <string name="title_activity_element">ElementActivity</string>
-    <string name="action_save">Save</string>
-    <string name="title_fragment_database">Available Databases</string>
-    <string name="title_activity_list">ListActivity</string>
-    <string name="error_no_save">Your data will NOT be saved! Would you like to continue?</string>
-    <string name="yes">Yes</string>
-    <string name="warning">Warning</string>
-    <string name="status">Status</string>
-    <string name="back">Back</string>
+    <string name="sql_query">SQL Query</string>
+    <string name="title_activity_sql">SQL Query</string>
+    <string name="hint_sql_query">SQL Query</string>
+    <string name="action_cancel">Cancel</string>
+    <string name="action_execute">Execute</string>
+    <string name="info">Information</string>
 
 </resources>

app/src/main/res/xml/settings.xml

@@ -3,8 +3,9 @@
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
     <PreferenceCategory
         android:title="@string/general_category">
-        <Preference
-            android:key="entries_limit"
+        <EditTextPreference
+            android:key="entries_limit_string"
+            android:numeric="integer"
             android:title="@string/entries_limit"
             android:summary="@string/entries_summary"
             />