Reload everything when coming back from the SD being unmounted.

We could do this more efficiently by only updating the packages that
have changed, but that would involve a big rewrite.

Bug: 3020854
Change-Id: Ie7e3bee20f45dc5efa93d960902e9dfb79c4a3a5

src/com/android/launcher2/LauncherModel.java

@@ -340,8 +340,9 @@ public class LauncherModel extends BroadcastReceiver {
             }
 
         } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) {
-            String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
-            enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, packages));
+            // When everything comes back, just reload everything.  We might not
+            // have the right icons for apps on external storage.
+            startLoader(mApp, false);
 
         } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
             String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);