How to change MenuItem icon in ActionBar programmatically

Question

How to change MenuItem icon in ActionBar programmatically? I tried to use

MenuItem menuItem = (MenuItem)findViewById(R.id.action_settings);
menuItem.setIcon(         


        

Answer 1

Lalith's answer is correct.

You may also try this approach:

button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            invalidateOptionsMenu();
        }
    });

 @Override
 public boolean onPrepareOptionsMenu(Menu menu) {

    MenuItem settingsItem = menu.findItem(R.id.action_settings);
    // set your desired icon here based on a flag if you like
    settingsItem.setIcon(ContextCompat.getDrawable(this, R.drawable.ic_launcher)); 

    return super.onPrepareOptionsMenu(menu);
 }