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I am developing a application that should support on both phone and tablet. In this application i am using fragments from android.

Now the flow of the application is like

MainActivity --> Fragment1 --> Fragment2

In this application , i want a menu item that should show only in Fragment2 along with activity's menu items.

So i have tried one solution like adding globle menu items in MainActivity and in Fragment2 replacing the whole MainActivity's menu with Fragment2 specific Menu.

setHasOptionsMenu(true);

inside onCreateView , and implement this method.

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.menu_f, menu);
    super.onCreateOptionsMenu(menu,inflater);
}

Now its work exactly fine for phone layout , but when its come to tablet problem arise.

Here is my ScreenShots.

Fragment 1 enter image description here

Fragment 1 and Fragment 2 combination when pressing 9 in keybord(Tablet mode ). enter image description here

And Finally when i pressed 9 again to come back to pHone view it shows me extra menu item.

enter image description here

I just marked a extra menu item in Image. So why this me coming and how can i resolve it ?

Jay Vyas
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  • i guess in tablet mode both your fragments are visible. Is that the case ?? – Panther Dec 19 '14 at 05:49
  • yes.bcz i need to show both fragments in tablet mode. But when i nevigate back to mobile mode , the menu item should't be there – Jay Vyas Dec 19 '14 at 05:50
  • i guess this happening on a real device has a less chance. However, you should override the `onConfigurationChanged` and call `invalidateOptionsMenu()` or `supportInvalidateOptionsMenu()` which ever is appropiate – Panther Dec 19 '14 at 05:55
  • Firstly i tried to implement onConfigurationChanged() method for different proposes in fragment. But it is not calling , don't know why :( – Jay Vyas Dec 19 '14 at 05:57
  • for `onConfigurationChanged` not getting called you have to set `android:configChanges="orientation|screenSize"` in the manifest file – Panther Dec 19 '14 at 06:02

1 Answers1

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You need to hide the menu group like this in your fragment 1 

@Override
public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
}

it'll make a call to onPrepareOptionsMenu where you can hide your menu group added by fragment2

@Override
public void onPrepareOptionsMenu(Menu menu) {
        super.onPrepareOptionsMenu(menu);
        menu.setGroupVisible(0, false);
}
Nitin Misra
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  • i tried this solution , but it is hiding mainactivity's menu. – Jay Vyas Dec 19 '14 at 06:08
  • look you need to keep the `fragment's` menu in a separate `menu group` got it? the menu items of `fragment1` `fragment2` and `fraagmentActivity` has to reside in different `menugroup` – Nitin Misra Dec 19 '14 at 06:12
  • ya i have tried this also. Firstly its seems to be work fine , but once i navigate back to ( pressing 9) phone layout from tab layout , the group in not getting invisible.Its showing the group there to – Jay Vyas Dec 19 '14 at 06:37
  • – Jay Vyas Dec 19 '14 at 06:39
  • ya there it is working fine. But problem creates when i switch from tab mode to mobile mode – Jay Vyas Dec 19 '14 at 07:01