Change option menu's items on item selection

Question

I'm trying to change the option menu after an item on the menu is selected. This is what I tried:

@Override
public boolean onPrepareOptionsMenu(Menu menu) {

    if(refresh) {

        menu.clear();
        menu.add(0, Menu.FIRST, 0, "Changed item");

    }

    return super.onPrepareOptionsMenu(menu);

}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    if(item.getItemId() == R.id.refresh)
    {
        refresh = true;
        closeOptionsMenu();
        invalidateOptionsMenu();
        openOptionsMenu();
    }
    return super.onOptionsItemSelected(item);
}

But I get:

W/InputManagerService(192): Window already focused, ignoring focus gain of:     com.android.internal.view.IInputMethodClient$Stub$Proxy@4147c778

and the code is not working.. Any idea?

Answer 1

the menu will close and not reopen, only if i reclick on the menu button i see the new value

I don't know of anyway to keep the options menu open after an item has been selected, however you can reopen it automatically with a Handler and Runnable.

Create a couple new field variables:

private Handler handler = new Handler();
private Runnable reopenMenu = new Runnable() {
    @Override
    public void run() {
        openOptionsMenu();
    }
};

And inside onOptionsItemSelected() use:

if(item.getItemId() == R.id.refresh)
{
    refresh = true;
    invalidateOptionsMenu(); // This is only necessary for changing an ActionBar
    handler.postDelayed(reopenMenu, 100);
}

(Notice I removed the calls to close and open the menu.)
Lastly you should set refresh = false; in onPrepareOptionsMenu() since you only need to make the change once.

Answer 2

It might be easier to have the second button already on the menu but visibility set to GONE, and then make it visible when you need.

MenuItem = menu.findItem(R.id.menuItem);

MenuItem.setVisible(false);