diff --git a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
index 449fc02f..9780d261 100644
--- a/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
+++ b/android-app-core/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
@@ -2,7 +2,6 @@ package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import android.content.Context;
-import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.preference.PreferenceManager;
@@ -18,7 +17,6 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.solovyev.android.AndroidUtils;
 import org.solovyev.android.calculator.core.R;
-import org.solovyev.android.calculator.matrix.CalculatorMatrixActivity;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 import org.solovyev.android.calculator.view.AngleUnitsButton;
 import org.solovyev.android.calculator.view.NumeralBasesButton;
@@ -138,7 +136,7 @@ public final class CalculatorButtons {
                 Locator.getInstance().getCalculator().fireCalculatorEvent(CalculatorEventType.show_create_var_dialog, null);
                 result = true;
             } else if ( dragDirection == DragDirection.down ) {
-                context.startActivity(new Intent(context, CalculatorMatrixActivity.class));
+                Locator.getInstance().getCalculator().fireCalculatorEvent(CalculatorEventType.show_create_matrix_dialog, null);
                 result = true;
             }
 
diff --git a/android-app/res/layout/matrix_edit_fragment.xml b/android-app/res/layout/matrix_edit_fragment.xml
index d3133f42..7f2d115b 100644
--- a/android-app/res/layout/matrix_edit_fragment.xml
+++ b/android-app/res/layout/matrix_edit_fragment.xml
@@ -4,14 +4,14 @@
 <LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
               xmlns:picker="http://schemas.android.com/apk/res-auto"
               a:id="@+id/main_fragment_layout"
-              style="?fragmentLayoutStyle"
+              style="?cpp_fragment_layout_style"
               a:layout_width="match_parent"
               a:layout_height="match_parent">
 
     <TextView a:id="@+id/fragmentTitle"
               a:layout_height="wrap_content"
               a:layout_width="match_parent"
-              style="?fragmentTitleStyle"/>
+              style="?cpp_fragment_title_style"/>
 
     <include layout="@layout/ad"/>
 
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
index dd2d2cfe..39b5067f 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorActivityLauncher.java
@@ -2,6 +2,7 @@ package org.solovyev.android.calculator;
 
 import android.app.Activity;
 import android.app.AlertDialog;
+import android.app.Application;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -21,6 +22,7 @@ import org.solovyev.android.calculator.function.FunctionEditDialogFragment;
 import org.solovyev.android.calculator.help.CalculatorHelpActivity;
 import org.solovyev.android.calculator.history.CalculatorHistoryActivity;
 import org.solovyev.android.calculator.math.edit.*;
+import org.solovyev.android.calculator.matrix.CalculatorMatrixActivity;
 import org.solovyev.android.calculator.plot.CalculatorPlotActivity;
 import org.solovyev.android.calculator.plot.CalculatorPlotFragment;
 import org.solovyev.android.calculator.plot.PlotInput;
@@ -113,6 +115,7 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
 		intent.putExtra(ChartFactory.TITLE, context.getString(R.string.c_graph));
 		intent.putExtra(CalculatorPlotFragment.INPUT, new CalculatorPlotFragment.Input(generic.toString(), constant.getName()));
 		intent.setClass(context, CalculatorPlotActivity.class);
+        addFlags(intent, false);
 		context.startActivity(intent);
 	}
 
@@ -127,6 +130,7 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
                     } else {
                         final Intent intent = new Intent(context, CalculatorVarsActivity.class);
                         intent.putExtra(CalculatorVarsFragment.CREATE_VAR_EXTRA_STRING, varValue);
+                        addFlags(intent, false);
                         context.startActivity(intent);
                     }
                 } else {
@@ -179,12 +183,24 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
 
     @Override
     public void onCalculatorEvent(@NotNull CalculatorEventData calculatorEventData, @NotNull CalculatorEventType calculatorEventType, @Nullable Object data) {
+        final Application application = App.getInstance().getApplication();
+
         switch (calculatorEventType){
+            case show_create_matrix_dialog:
+                App.getInstance().getUiThreadExecutor().execute(new Runnable() {
+                    @Override
+                    public void run() {
+                        final Intent intent = new Intent(application, CalculatorMatrixActivity.class);
+                        addFlags(intent, false);
+                        application.startActivity(intent);
+                    }
+                });
+                break;
             case show_create_var_dialog:
                 App.getInstance().getUiThreadExecutor().execute(new Runnable() {
                     @Override
                     public void run() {
-                        CalculatorActivityLauncher.createVar(App.getInstance().getApplication(), Locator.getInstance().getDisplay());
+                        CalculatorActivityLauncher.createVar(application, Locator.getInstance().getDisplay());
                     }
                 });
                 break;
@@ -192,7 +208,7 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
                 App.getInstance().getUiThreadExecutor().execute(new Runnable() {
                     @Override
                     public void run() {
-                        CalculatorActivityLauncher.createFunction(App.getInstance().getApplication(), Locator.getInstance().getDisplay());
+                        CalculatorActivityLauncher.createFunction(application, Locator.getInstance().getDisplay());
                     }
                 });
                 break;
@@ -202,7 +218,7 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
                 App.getInstance().getUiThreadExecutor().execute(new Runnable() {
                     @Override
                     public void run() {
-                        plotGraph(App.getInstance().getApplication(), plotInput.getFunction(), plotInput.getConstant());
+                        plotGraph(application, plotInput.getFunction(), plotInput.getConstant());
                     }
                 });
                 break;
@@ -212,7 +228,7 @@ public final class CalculatorActivityLauncher implements CalculatorEventListener
                     App.getInstance().getUiThreadExecutor().execute(new Runnable() {
                         @Override
                         public void run() {
-                            showEvaluationError(App.getInstance().getApplication(), errorMessage);
+                            showEvaluationError(application, errorMessage);
                         }
                     });
                 }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
index 97420fa0..09996999 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/CalculatorApplication.java
@@ -17,6 +17,9 @@ import org.solovyev.android.calculator.external.AndroidExternalListenersContaine
 import org.solovyev.android.calculator.history.AndroidCalculatorHistory;
 import org.solovyev.android.calculator.model.AndroidCalculatorEngine;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * User: serso
  * Date: 12/1/11
@@ -50,6 +53,17 @@ public class CalculatorApplication extends android.app.Application {
 
     @NotNull
     private static CalculatorApplication instance;
+
+    /*
+    **********************************************************************
+    *
+    *                           FIELDS
+    *
+    **********************************************************************
+    */
+
+    private final List<CalculatorEventListener> listeners = new ArrayList<CalculatorEventListener>();
+
     /*
     **********************************************************************
     *
@@ -133,6 +147,12 @@ public class CalculatorApplication extends android.app.Application {
             }
         }).start();
 
+        listeners.add(new CalculatorActivityLauncher());
+
+        for (CalculatorEventListener listener : listeners) {
+            calculator.addCalculatorEventListener(listener);
+        }
+
         Locator.getInstance().getLogger().debug(TAG, "Application started!");
         Locator.getInstance().getNotifier().showDebugMessage(TAG, "Application started!");
     }
diff --git a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
index 13045002..3b230fda 100644
--- a/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
+++ b/android-app/src/main/java/org/solovyev/android/calculator/function/FunctionEditDialogFragment.java
@@ -167,6 +167,7 @@ public class FunctionEditDialogFragment extends DialogFragment implements Calcul
             FunctionEditDialogFragment.showDialog(input, ((SherlockFragmentActivity) context).getSupportFragmentManager());
         } else {
             final Intent intent = new Intent(context, CalculatorFunctionsActivity.class);
+            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             intent.putExtra(CalculatorFunctionsFragment.CREATE_FUNCTION_EXTRA, input);
             context.startActivity(intent);
         }
diff --git a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
index 306e0ad2..0d133286 100644
--- a/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
+++ b/core/src/main/java/org/solovyev/android/calculator/CalculatorEventType.java
@@ -156,6 +156,7 @@ public enum CalculatorEventType {
     show_like_dialog,
 
     show_create_var_dialog,
+    show_create_matrix_dialog,
     show_create_function_dialog,
 
     //org.solovyev.android.calculator.plot.PlotInput