Toolbar navigation icon never set

Question

I'm trying the new Toolbar component and having some trouble with the navigation icon. I want to implement a custom icon for back navigation :

In my manifest i set a parent to my activity :

<activity android:name=".CardsActivity" android:parentActivityName=".MainActivity">
    <!-- Parent activity meta-data to support API level 7+ -->
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value=".MainActivity" />
</activity>

I declare the toolbar like this :

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.example.lollitest.MainActivity" >
    
    <android.support.v7.widget.Toolbar
        android:id="@+id/my_awesome_toolbar"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:minHeight="?attr/actionBarSize"
        android:layout_marginBottom="10dp"
        android:background="?attr/colorPrimary" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/my_awesome_toolbar"
        android:text="@string/hello_world" />

</RelativeLayout>

Then in my activity i configure the Toolbar like this :

Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
toolbar.setNavigationIcon(R.drawable.ic_good);
toolbar.setTitle("Title");
toolbar.setSubtitle("Sub");
toolbar.setLogo(R.drawable.ic_launcher);
setSupportActionBar(toolbar);

Which giving me :

The back icon is not the one i set with setNavigationIcon() ! Whatever drawable i give to the method the navigation icon is always the back arrow.

I have tried to remove the parent association in the manifest but the only effect is (obviously) to prevent the button to go back.

On contrary if i want the default back arrow icon and don't call setNavigationIcon() i don't have any icon at all.

What is the correct way to handle the navigation icon in toolbar (custom and default) ?

NOte : i'm running my test on Android 4.4

Answer 1

Currently you can use it, changing the order: (it seems to be a bug)

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

toolbar.setNavigationIcon(R.drawable.ic_good);
toolbar.setTitle("Title");
toolbar.setSubtitle("Sub");
toolbar.setLogo(R.drawable.ic_launcher);