How to change menu item text dynamically in Android

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I’m trying to change the title of a menu item from outside of the onOptionsItemSelected(MenuItem item) method.

I already do the following;

public boolean onOptionsItemSelected(MenuItem item) {
  try {
    switch(item.getItemId()) {
      case R.id.bedSwitch:
        if(item.getTitle().equals("Set to 'In bed'")) {
          item.setTitle("Set to 'Out of bed'");
          inBed = false;
        } else {
          item.setTitle("Set to 'In bed'");
          inBed = true;
        }
        break;
    }
  } catch(Exception e) {
    Log.i("Sleep Recorder", e.toString());
  }
  return true;
}

however I’d like to be able to modify the title of a particular menu item outside of this method.

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