Toggle DrawerLayout With Title Only (NO App Icon)?

Question

I have an activity with a DrawerLayout. I can open the drawer two different ways...by swiping from the left area of the screen towards the right and by clicking the app title. I DO NOT have an app icon displayed, only a title. I've implemented this exactly as recommended by Google here: Creating a Navigation Drawer: Open and Close with the App Icon

Everything is functional as far as opening and closing the drawer itself. However, it does not display the standard DrawerLayout icon that is suppose to be used. Instead I get the regular up caret (looks like a less than sign).

As soon as I add the app icon back to the ActionBar it begins to work as expected. The Drawer layout icon displays and animates when the drawer is opened or closed. I've tried removing the app icon both in my styles XML file and programmatically.

Is there a way to get the DrawerLayout icon working WITHOUT the app icon???

UPDATE: I've found a work around, but it's a hack more so than a solution. I simply created a 1x1 pixel transparent PNG (blank.png) and set it as my app icon in my styles.xml file. Below is all relative code:

styles.xml

<style name="MyCustomTheme" parent="android:Theme.Holo.Light.DarkActionBar">
    <item name="android:actionBarStyle">@style/MyCustomActionBar</item>
    <item name="android:icon">@drawable/blank</item>
</style>

<style name="MyCustomActionBar" parent="@android:style/Widget.Holo.ActionBar">
    <item name="android:displayOptions">showHome|showTitle|homeAsUp</item>
</style>

MainActivity -> onCreate()

this.navDrawerToggle = new ActionBarDrawerToggle
(
    this,
    this.navDrawerLayout,
    R.drawable.icon_nav_drawer,
    R.string.nav_drawer_open,
    R.string.nav_drawer_closed
)
{
    public void onDrawerClosed(View view) {}
    public void onDrawerOpened(View drawerView) {}
};

MainActivity -> onPostCreate()

super.onPostCreate(savedInstanceState);
this.navDrawerToggle.syncState();

MainActivity -> onResume()

this.navDrawer.setOnItemClickListener(new DrawerItemClickListener());
this.navDrawerLayout.setDrawerListener(this.navDrawerToggle);

MainActivity -> onPause()

this.navDrawer.setOnItemClickListener(null);
this.navDrawerLayout.setDrawerListener(null);

MainActivity -> onConfigurationChanged(Configuration newConfig)

super.onConfigurationChanged(newConfig);
navDrawerToggle.onConfigurationChanged(newConfig);

MainActivity -> onOptionsItemSelected(MenuItem item)

if (this.navDrawerToggle.onOptionsItemSelected(item)) {return true;}
else
{
    // A bunch of item click handling happens here...

    return true;
}

Answer 1

I was curious about this so I tried it with the sample for the DrawerLayout and it worked fine. Also, it seems like you have to use your own drawer icon drawable, it's recommended anyways. You can download the default assets from this site Creating a Navigation Drawer and put them in their respective drawable resource folder.

Here's what worked for me:

ActionBar actionBar = getActionBar();

// Let's get rid of the app icon here
actionBar.setIcon(null);
actionBar.setTitle("App Name");

// Setting these 3 options allows us to show the title as well as a "Home" elements
// "Home" elements include the Up and/or Drawer icon. The DISPLAY_HOME_AS_UP will enable
// and show the Drawer icon, we'll be "replacing" the "up" button with the drawer icon below
actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE 
        | ActionBar.DISPLAY_SHOW_HOME 
        | ActionBar.DISPLAY_HOME_AS_UP);

// Get a reference of the DrawerLayout
DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerLayout.setDrawerListener(drawerToggle);

// Setting ActionBarDrawerToggle will allow you to set the drawables for the drawer
// (this will also give you the nice/smooth animation) as well as allow you to do some
// other things depending on the events: onDrawerClosed & onDrawerOpened.
ActionBarDrawerToggle drawerToggle = new ActionBarDrawerToggle(
          this,                   /* host Activity */
          drawerLayout,           /* DrawerLayout object */
          R.drawable.ic_drawer,   /* nav drawer image to replace 'Up' caret */
          R.string.drawer_open,   /* "open drawer" description for accessibility */
          R.string.drawer_closed  /* "close drawer" description for accessibility */
      ) {
    public void onDrawerClosed(View view) {
        actionBar.setTitle("Closed...");
        invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
    }

    public void onDrawerOpened(View drawerView) {
        actionBar.setTitle("Open...");
        invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
    }
};

// Set a listener to be notified of drawer events.
drawerLayout.setDrawerListener(drawerToggle);

UPDATE: It seems like the android:displayOptions on the ActionBar style are not being accounted for. Use actionBar.setDisplayOptions(int options) instead.