Fix crop never returns

fix: 5359106

We should return true if the save is successfully.
Also make it more robust even with exceptions.

Change-Id: I4d06b625177d4d479c89a7de1bcdf6f6f301a3da
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 79833c8..1ad81bf 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -63,6 +63,9 @@
     <string name="multiface_crop_help">Tap a face to begin.</string>
     <!-- Toast/alert that the image is being saved to the SD card -->
     <string name="saving_image">Saving picture\u2026</string>
+    <!-- Eorror toast message that the image cannot be saved [CHAR LIMIT=40]-->
+    <string name="save_error">Cannot save the cropped image</string>
+
     <!-- menu pick: crop the currently selected image -->
     <string name="crop_label">Crop picture</string>
     <!-- Toast/alert that the face detection is being run -->