-keepclassmembers class com.android.wallpaper.livepicker.LiveWallpaperPreview {
  public void setLiveWallpaper(android.view.View);
  public void configureLiveWallpaper(android.view.View);
}

-keepclasseswithmembers class * {
    public <init>(android.content.Context, android.util.AttributeSet);
}

-keep class android.support.design.widget.CoordinatorLayout
-keep class android.support.design.widget.BottomSheetBehavior