Merge "Update doc to reflect requirement of a Looper for changing animation's frame delay"
diff --git a/core/java/android/animation/ValueAnimator.java b/core/java/android/animation/ValueAnimator.java
index da9a8c8..5af6504 100644
--- a/core/java/android/animation/ValueAnimator.java
+++ b/core/java/android/animation/ValueAnimator.java
@@ -669,6 +669,10 @@
* The frame delay may be ignored when the animation system uses an external timing
* source, such as the display refresh rate (vsync), to govern animations.
*
+ * Note that this method should be called from the same thread that {@link #start()} is
+ * called in order to check the frame delay for that animation. A runtime exception will be
+ * thrown if the calling thread does not have a Looper.
+ *
* @return the requested time between frames, in milliseconds
*/
public static long getFrameDelay() {
@@ -685,6 +689,10 @@
* The frame delay may be ignored when the animation system uses an external timing
* source, such as the display refresh rate (vsync), to govern animations.
*
+ * Note that this method should be called from the same thread that {@link #start()} is
+ * called in order to have the new frame delay take effect on that animation. A runtime
+ * exception will be thrown if the calling thread does not have a Looper.
+ *
* @param frameDelay the requested time between frames, in milliseconds
*/
public static void setFrameDelay(long frameDelay) {