Merge "Don't try to load a long screenshot image more than once" into sc-dev am: 088e0f5c7b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15237355

Change-Id: I3b3d62a0bcd09122029448a48f79a034945b21dc

packages/SystemUI/src/com/android/systemui/screenshot/LongScreenshotActivity.java

@@ -162,6 +162,11 @@ public class LongScreenshotActivity extends Activity {
     public void onStart() {
         super.onStart();
 
+        if (mPreview.getDrawable() != null) {
+            // We already have an image, so no need to try to load again.
+            return;
+        }
+
         if (mCacheLoadFuture != null) {
             Log.d(TAG, "mCacheLoadFuture != null");
             final ListenableFuture<ImageLoader.Result> future = mCacheLoadFuture;