Add a launcher image

AndroidManifest.xml

 <application
        android:theme="@style/Theme.Wearable.Launcher" >

launch_screen.xml

// this is a drawable
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" android:opacity="opaque">
    <!-- The background color, preferably the same as your normal theme -->
    <item android:drawable="@color/app_color"/>
    <item>
        <bitmap
            android:src="@drawable/launcher_logo"
            android:gravity="center"/>
    </item>
</layer-list>

MainActivity.java

// Overall strategy: 1. Create a new theme just for launching 2. Add it to the manifest 3. Switch it back as the first thing in the main activity's OnCreate 
// switch back to the real theme before super.oncreate and before setcontentview in the main activity
// https://plus.google.com/+AndroidDevelopers/posts/Z1Wwainpjhd?e=-RedirectToSandbox
@Override
    protected void onCreate(Bundle savedInstanceState) {
        setTheme(R.style.Theme_Wearable);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_watch_face);

style.xml

<resources>
    <style name="Theme.Wearable.Launcher">
        <item name="android:windowBackground">@drawable/launch_screen</item>
    </style>
// ..