CODEWITHSUNDEEP
androidmenucontextmenuoncreate
TacB0sS
TacB0sS

Reputation: 10266

Android - Populate menu upon activity onCreate

Perhaps I'm missing the obvious, but my menu is only been created and populated when onCreateOptionsMenu(Menu menu) is called, as in this example, and this only seem to be called after I press the menu button.

I would like to populate the menu upon the creation of the activity, how can achieve that?

UPDATE:

Perhaps a better question would be: How can I get the Menu instance of my Activity?

Thanks

Upvotes: 1

Views: 2087

Answers (1)

Simon
Simon

Reputation: 14472

Create a class which holds those states then set your enabled/checked etc from the properties of that class in onCreateOptionsMenu()

class MenuStates{

   public static boolean userDidPressTheButton;
   public static boolean serverDidRespond;
   public static boolean colorWasChanged;

}

void someEventHandler(){

   MenuStates.userDidPressTheButton = true;

}

void onCreateOptionsMenu(){

    myCheckBox.setChecked(MenuStates.userDidPressTheButton);

}

[EDIT]

You don't say why you want to get the menu instance. One approach:

Menu optsMenu;

...

// this is called once only before the end of the Activity onCreate().
onCreateOptionsMenu(Menu menu){

    opstMenu = menu;
    super.onCreateOptionsMenu(menu);

}

Following that, modify your menu as you wish. Do any "as it pops" up work in onPrepareOptionsMenu().

The key understanding is the difference between onCreateOptionsMenu() and onPrepareOptionsMenu().

[MORE EDIT]

To completely control the thing yourself:

Menu optsMenu;


onCreate(){
    openOptionsMenu()    // the menu won't show in onCreate but onCreateOptionsMenu is shown
    closeOptionsMenu()

}

onCreateOptionsMenu(Menu menu){
     optsMenu = menu;
}

onPrepareOptionsMenu(Menu menu){

   menu.clear();
   for (int i=0;ioptsMenu.size();i++){
       menu.add(optsMenu.get(i).getTitle());
   }

   return super.onPrepareOptionsMenu(menu);

}

From the docs

You can safely hold on to menu (and any items created from it), making modifications to it as desired, until the next time onCreateOptionsMenu() is called.

http://developer.android.com/reference/android/app/Activity.html#onCreateOptionsMenu%28android.view.Menu%29

Upvotes: 2

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