android - how to reference ActionBar title View on Lollipop

Question

I have an Activity which extends the AppCompatActivity and uses the support ActionBar. Compile SDK version is 23, test devices SDK are 21-22. I need to get the ActionBar's title TextView, however, the most known way of doing this

int resId = getResources().getIdentifier("action_bar_title", "id", "android");
return (TextView) findViewById(resId);

doesn't work starting with API 21. Is there a way to reference the title TextView on Lollipop?

Answer 1

With AppCompatActivity, You can retrieve the TextView that you want indirectly, because it seems that this TextView has no id, like this:

Toolbar toolbar = (Toolbar) findViewById(R.id.action_bar);
TextView textView = (TextView) toolbar.getChildAt(0);

I used the Hierarchy Viewer tool to get the view tree. (Tool that you can find into Android Device Monitor under Hierarchy View perspective)