This Activity already has an action bar supplied by the window decor

Question

Trying to move over my stuff to use Toolbar instead of action bar but I keep getting an error saying

java.lang.RuntimeException: Unable to start         


        

Answer 1

I also faced same problem. But I used:

getSupportActionBar().hide();

before

setContentView(R.layout.activity_main);

Now it is working.

And we can try other option in Style.xml,