717838d3b0
This cl is to fix the preference flicker issue. The main reason is that we cannot find cached preference because of the inconsistent search key. The search key is calculated without considering uidObj, but the key in preference(aka changed preference) maybe changed later based on the existence of uidObj. So when we search the changed preference using the wrong key, we won't get it even though it exists in the cache. In my cl, I group two parts(search key calc + considering uidObj) together in a method to extract the key. Bug: 33663705 Test: make RunSettingsRoboTests Change-Id: I2ca0c558ffc0d49ed9576321ecbc02542b568d65