Set contentDescription for ActionBar's up button

Question

I'm trying to customize the "Navigate up" default contentDescription that is associated with the up button of the ActionBar (I'm using ActionBarSherlock).

From ActionBarView's source:

public void setHomeButtonEnabled(boolean enable) {
    mHomeLayout.setEnabled(enable);
    mHomeLayout.setFocusable(enable);
    // Make sure the home button has an accurate content description for accessibility.
    if (!enable) {
        mHomeLayout.setContentDescription(null);
    } else if ((mDisplayOptions & ActionBar.DISPLAY_HOME_AS_UP) != 0) {
        mHomeLayout.setContentDescription(mContext.getResources().getText(
                R.string.abs__action_bar_up_description));
    } else {
        mHomeLayout.setContentDescription(mContext.getResources().getText(
                R.string.abs__action_bar_home_description));
    }
}

so the key would be how to get a reference to mHomeLayout. getWindow().getDecorView().findViewById(android.R.id.home) is not working, as it's returning an ImageView.

How could I do?

Thanks ;)

Answer 1

In xml, use "navigationContentDescription"

<androidx.appcompat.widget.Toolbar
    android:layout_width="match_parent"
    android:layout_height="?actionBarSize"
    android:layout_alignParentTop="true"
    app:navigationContentDescription="@string/back"/>

Answer 2

layout

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:background="@color/colorPrimary"
    android:elevation="4dp"
    android:layout_height="wrap_content"
    android:layout_width="match_parent"
    app:layout_scrollFlags="scroll|enterAlways">

</android.support.v7.widget.Toolbar>

code

public Toolbar toolbar;
...
setContentView(layout);
toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle(layoutTitle);
setSupportActionBar(toolbar);
...
getSupportActionBar().setHomeActionContentDescription("Go Back To XYZ Screen");