CODEWITHSUNDEEP
androidactionbarsherlock
Nestor
Nestor

Reputation: 8384

How to replace menu dynamically with another in Android

I have a ListActivity (SherlockListActivity) and its content can be dynamically changed by the user. When the content changes, the options menu should be replaced.

As I learned, instead of onCreateOptionsMenu I should use onPrepareOptionsMenu that is (supposed to be) called every time the user selects the menu.

This is called right before the menu is shown, every time it is shown.

I have the following code:

@Override
  public boolean onPrepareOptionsMenu(Menu menu)
  {
    menu.clear();
    if (UserOption == UserOption1)
      getSupportMenuInflater().inflate(R.menu.menu_option1, menu);
    else
      getSupportMenuInflater().inflate(R.menu.menu_option2, menu);
    return super.onPrepareOptionsMenu(menu);
  }

It is called only once during debug, so I always have the same menu.

What should I set to make it work?

Upvotes: 2

Views: 3387

Answers (1)

Arun Shankar
Arun Shankar

Reputation: 622

Create and prepare the options menu for changing and its item selection method 

 @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        menu.clear();
        MenuInflater inflater = getMenuInflater();
        if(menuString=="red"){
        inflater.inflate(R.menu.red_menu, menu);
        }else if(menuString=="green"){
        inflater.inflate(R.menu.green_menu, menu);
        }
        return true;
    }


 @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle item selection
        switch (item.getItemId()) {
            case R.id.new_game:
                return true;
            case R.id.help:
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

Like whenever you want to change menu call

String menuString="red or green";
invalidateOptionsMenu();

Like others told, if you want to have static menu use onCreateOptionsMenu, and if you want to change its visibility dynamically use onPrepareOptionsMenu along with onCreateOptionsMenu

Upvotes: 4

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