In android app Toolbar.setTitle method has no effect – application name is shown as title

Question

I'm trying to create simple application using android-support-v7:21 library.

Code snippets:
MainActivity.java

public class MainActivity extends ActionBarActivity {      Toolbar mActionBarToolbar;      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);                     mActionBarToolbar.setTitle("My title");         setSupportActionBar(mActionBarToolbar); } 

activity_main.xml

<LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:fitsSystemWindows="true"     android:orientation="vertical">      <android.support.v7.widget.Toolbar                     android:id="@+id/toolbar_actionbar"         android:background="@null"         android:layout_width="match_parent"         android:layout_height="?actionBarSize"         android:fitsSystemWindows="true" />  </LinearLayout> 

But instead of "My title" on Toolbar %application name% is shown.
Seems like setTitle method has no effect.
I would like to show "My title".

UPD: Before, styles.xml was:

<style name="AppTheme" parent="Theme.AppCompat">     <item name="windowActionBar">false</item> </style> 

So, I thought that actionbar is not used. I add NoActionBar to style parent:

<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">     <item name="windowActionBar">false</item> </style> 

But the problem is not resolved.

Answer 1

Found the solution:

Instead of:

mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);             mActionBarToolbar.setTitle("My title"); setSupportActionBar(mActionBarToolbar); 

I used:

mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);             setSupportActionBar(mActionBarToolbar); getSupportActionBar().setTitle("My title"); 

And it works.

Answer 2

For anyone who needs to set up the title through the Toolbar some time after setting the SupportActionBar, read this.

The internal implementation of the support library just checks if the Toolbar has a title (not null) at the moment the SupportActionBar is set up. If there is, then this title will be used instead of the window title. You can then set a dummy title while you load the real title.

mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar_actionbar); mActionBarToolbar.setTitle(""); setSupportActionBar(mActionBarToolbar); 

later...

mActionBarToolbar.setTitle(title);