Fix black image wallpaper issue

We don't do transition if user unlocks the phone via biometric
authentication, but we haven't canceled the previous animation while
unlocking this way, as a consequence, the reveal state of
imagewallpaper may end up with a wrong state.

Bug: 139487871
Test: Manually test
Change-Id: Ida470d58910cbb22eed10338948aa8a99e8f4343

packages/SystemUI/src/com/android/systemui/glwallpaper/ImageRevealHelper.java

@@ -81,12 +81,6 @@ class ImageRevealHelper {
         });
     }
 
-    private void animate() {
-        mAnimator.cancel();
-        mAnimator.setFloatValues(mReveal, mAwake ? MAX_REVEAL : MIN_REVEAL);
-        mAnimator.start();
-    }
-
     public float getReveal() {
         return mReveal;
     }
@@ -95,8 +89,8 @@ class ImageRevealHelper {
         if (DEBUG) {
             Log.d(TAG, "updateAwake: awake=" + awake + ", duration=" + duration);
         }
+        mAnimator.cancel();
         mAwake = awake;
-        mAnimator.setDuration(duration);
         if (duration == 0) {
             // We are transiting from home to aod or aod to home directly,
             // we don't need to do transition in these cases.
@@ -105,7 +99,9 @@ class ImageRevealHelper {
             mRevealListener.onRevealStateChanged();
             mRevealListener.onRevealEnd();
         } else {
-            animate();
+            mAnimator.setDuration(duration);
+            mAnimator.setFloatValues(mReveal, mAwake ? MAX_REVEAL : MIN_REVEAL);
+            mAnimator.start();
         }
     }