PRM392 - PT2

A service can handle:

• perform file I/O

• interact with a content provider

• network transactions

• play music

A handler can receive messages from many threads, and update user interface

• Main Thread

• Worker thread

• UI thread

Which statement is not a method of Asyntask?

• onProgressUpdate

• doOnBackground

• onPreExecute

• onPostExecute

When use a recycler view, before set adapter for the recycler, you must:

• setLinearManager

• setManagerLayout

• setLayoutManager

When use asyntask, we can update UI on below methods:

• onProgressUpdate

• onPreExecute

• onPostExecute

• doInBackground

How to pass an object to other activity?

• object extends Serializable putExtra object to intent

• only putExtra object to intent

• object have to implements Serializable, then putExtra object to intent

• Can't pass object by intent

Which method is called first when press to soft back button of android device?

• finish()

• destroyActivity()

• endActivity()

When use implicit intents. If there's more than one app that can handle the intent, the system will:

• presents the user with a dialog to pick which app to use

• application crash

• show an error dialog

When set small icon for a notification, what happen when we use icon format .xml?

• The icon is displayed normally

• The icon is not displayed

• Android studio will show error statement

One pair thread - handler can replace by an asyntask