Merge "Fix NPE crash in UsageAccessDetails"

am: cd959f28a0

Change-Id: I21f898f7ec8fd67d4f29d73491b4ac57cad7a252

src/com/android/settings/applications/AppInfoBase.java

@@ -215,7 +215,9 @@ public abstract class AppInfoBase extends SettingsPreferenceFragment
 
     @Override
     public void onPackageListChanged() {
-        refreshUi();
+        if (!refreshUi()) {
+            setIntentAndFinish(true, true);
+        }
     }
 
     public static void startAppInfoFragment(Class<?> fragment, int titleRes,

src/com/android/settings/applications/UsageAccessDetails.java

@@ -137,6 +137,9 @@ public class UsageAccessDetails extends AppInfoWithHeader implements OnPreferenc
 
     @Override
     protected boolean refreshUi() {
+        if (mPackageInfo == null) {
+            return false;
+        }
         mUsageState = mUsageBridge.getUsageInfo(mPackageName,
                 mPackageInfo.applicationInfo.uid);
 

tests/robotests/src/com/android/settings/applications/UsageAccessDetailsTest.java

@@ -21,6 +21,7 @@ import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.verify;
 
 import android.content.Context;
+import android.os.RemoteException;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
@@ -65,4 +66,11 @@ public class UsageAccessDetailsTest {
         verify(mFeatureFactory.metricsFeatureProvider).action(nullable(Context.class),
                 eq(MetricsProto.MetricsEvent.APP_SPECIAL_PERMISSION_USAGE_VIEW_DENY), eq("app"));
     }
+
+    @Test
+    public void refreshUi_nullPackageInfo_shouldNotCrash() throws RemoteException {
+        mFragment.mPackageInfo = null;
+        mFragment.refreshUi();
+        // should not crash
+    }
 }