问题 Before write this thread I have try to implement the different solution that I found in stackoverflow, but nothing work properly. I'm developing an Android applucation that use the custom navigation drawer, I have to change the standard icon of actionbar (now is toolbar, right ?), and settings icon. This is my code: protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id