Drawable: stub 'ripple' as transparent ColorDrawable, fix view.setBackgroundColor for buttons

src/api-impl/android/graphics/drawable/ColorDrawable.java

@@ -11,5 +11,5 @@ public class ColorDrawable extends Drawable {
 	public int getColor() {
 		return color;
 	}
-	
+
 }

src/api-impl/android/graphics/drawable/Drawable.java

@@ -43,7 +43,7 @@ public class Drawable {
 	public ConstantState getConstantState() {
 		return null;
 	}
-	
+
 	public abstract class ConstantState {
 
 		public abstract Drawable newDrawable(Resources res);
@@ -131,6 +131,9 @@ public class Drawable {
 			return drawable;
 		} else if ("transition".equals(parser.getName())) {
 			return new Drawable();
+		} else if ("ripple".equals(parser.getName())) {
+			// FIXME: the non-pressed state of RippleDrawable should be equivalent to this
+			return new ColorDrawable(0);
 		}
 		return null;
 	}

src/api-impl/android/graphics/drawable/RippleDrawable.java

@@ -12,5 +12,4 @@ public class RippleDrawable extends Drawable {
 		// TODO Auto-generated method stub
 		throw new UnsupportedOperationException("Unimplemented method 'draw'");
 	}
-	
 }