[android] How to set menu to Toolbar in Android

You need to override this code in your Activity:

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu, this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main2, menu);
    return true;
}

and set your toolbar like this:

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);