DownloadProvider: fix the crash when rotate screen.

TrampolineActivity will be recreated when rotate screen,
then the fragment is currently associated with any Activity.
So getActivity() will return a null and caused NullPointerException.

Add the null check before call finish().

CRs-Fixed: 640914

Change-Id: I76f368a597552e824d533b6a66ea23fad4c0cb41

1 files changed, 6 insertions, 2 deletions

diff --git a/ui/src/com/android/providers/downloads/ui/TrampolineActivity.java b/ui/src/com/android/providers/downloads/ui/TrampolineActivity.java
index f96c04ee..6bcff73b 100644
--- a/ui/src/com/android/providers/downloads/ui/TrampolineActivity.java
+++ b/ui/src/com/android/providers/downloads/ui/TrampolineActivity.java
@@ -152,7 +152,9 @@ public class TrampolineActivity extends Activity {
         @Override
         public void onDismiss(DialogInterface dialog) {
             super.onDismiss(dialog);
-            getActivity().finish();
+            if (getActivity() != null) {
+                getActivity().finish();
+            }
         }
     }
 
@@ -221,7 +223,9 @@ public class TrampolineActivity extends Activity {
         @Override
         public void onDismiss(DialogInterface dialog) {
             super.onDismiss(dialog);
-            getActivity().finish();
+            if (getActivity() != null) {
+                getActivity().finish();
+            }
         }
     }
 }