fix(window magnification): Do null check before animation

We would like to make sure the view is not null before applying animation to it.

Bug: 317172128
Flag: NA
Test: atest WindowMagnificationControllerTest
Change-Id: I84050c2108c4852b6c2832222c28f492e6d8fbdb

1 files changed, 7 insertions, 2 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/accessibility/WindowMagnificationController.java b/packages/SystemUI/src/com/android/systemui/accessibility/WindowMagnificationController.java
index 0bd4859eefd5..dde9f48424ea 100644
--- a/packages/SystemUI/src/com/android/systemui/accessibility/WindowMagnificationController.java
+++ b/packages/SystemUI/src/com/android/systemui/accessibility/WindowMagnificationController.java
@@ -1303,7 +1303,7 @@ class WindowMagnificationController implements View.OnTouchListener, SurfaceHold
         } else if (id == R.id.close_button) {
             setEditMagnifierSizeMode(false);
         } else {
-            animateBounceEffect();
+            animateBounceEffectIfNeeded();
         }
     }
 
@@ -1465,7 +1465,12 @@ class WindowMagnificationController implements View.OnTouchListener, SurfaceHold
         mBounceEffectDuration = duration;
     }
 
-    private void animateBounceEffect() {
+    private void animateBounceEffectIfNeeded() {
+        if (mMirrorView == null) {
+            // run the animation only if the mirror view is not null
+            return;
+        }
+
         final ObjectAnimator scaleAnimator = ObjectAnimator.ofPropertyValuesHolder(mMirrorView,
                 PropertyValuesHolder.ofFloat(View.SCALE_X, 1, mBounceEffectAnimationScale, 1),
                 PropertyValuesHolder.ofFloat(View.SCALE_Y, 1, mBounceEffectAnimationScale, 1));