QKSMS MessageListActivity cannot be cast to MainActivity

QKSMS.stacktrace

E/AndroidRuntime(13417): FATAL EXCEPTION: main
E/AndroidRuntime(13417): Process: com.moez.QKSMS, PID: 13417
E/AndroidRuntime(13417): java.lang.ClassCastException: com.moez.QKSMS.ui.messagelist.MessageListActivity cannot be cast to com.moez.QKSMS.ui.MainActivity
E/AndroidRuntime(13417):        at com.moez.QKSMS.ui.messagelist.MessageListFragment.onOptionsItemSelected(MessageListFragment.java:479)
E/AndroidRuntime(13417):        at android.app.Fragment.performOptionsItemSelected(Fragment.java:2159)
E/AndroidRuntime(13417):        at android.app.FragmentManagerImpl.dispatchOptionsItemSelected(FragmentManager.java:1990)
E/AndroidRuntime(13417):        at android.app.Activity.onMenuItemSelected(Activity.java:2898)
E/AndroidRuntime(13417):        at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:353)
E/AndroidRuntime(13417):        at android.support.v7.app.AppCompatActivity.onMenuItemSelected(AppCompatActivity.java:144)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.WindowCallbackWrapper.onMenuItemSelected(WindowCallbackWrapper.java:99)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.WindowCallbackWrapper.onMenuItemSelected(WindowCallbackWrapper.java:99)
E/AndroidRuntime(13417):        at android.support.v7.internal.app.ToolbarActionBar$2.onMenuItemClick(ToolbarActionBar.java:72)
E/AndroidRuntime(13417):        at android.support.v7.widget.Toolbar$1.onMenuItemClick(Toolbar.java:164)
E/AndroidRuntime(13417):        at android.support.v7.widget.ActionMenuView$MenuBuilderCallback.onMenuItemSelected(ActionMenuView.java:740)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:811)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:153)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:958)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:948)
E/AndroidRuntime(13417):        at android.support.v7.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:187)
E/AndroidRuntime(13417):        at android.widget.AdapterView.performItemClick(AdapterView.java:305)
E/AndroidRuntime(13417):        at android.widget.AbsListView.performItemClick(AbsListView.java:1146)
E/AndroidRuntime(13417):        at android.widget.AbsListView$PerformClick.run(AbsListView.java:3053)
E/AndroidRuntime(13417):        at android.widget.AbsListView$3.run(AbsListView.java:3860)
E/AndroidRuntime(13417):        at android.os.Handler.handleCallback(Handler.java:739)
E/AndroidRuntime(13417):        at android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime(13417):        at android.os.Looper.loop(Looper.java:135)
E/AndroidRuntime(13417):        at android.app.ActivityThread.main(ActivityThread.java:5343)
E/AndroidRuntime(13417):        at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(13417):        at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime(13417):        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
E/AndroidRuntime(13417):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
E/AndroidRuntime(13417):        at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:117)