Week 10/11 - Fragments, Updating A Widget Flashcards
0
Q
Which SDK version began support for fragments?
A
SDK version 3.0.
1
Q
What is a Fragment?
A
A Fragment is a modular section of an activity that can be manipulated on its own. Multiple Fragments can be used in an Activity to create a multi-panel user interface.
2
Q
What does the FragmentManager class do?
A
It manages FragmentTransactions to add, move, and transition between fragments.
3
Q
How does an app issue a change to a widget?
A
By broadcasting an intent that the widget is listening for.
4
Q
How is a web service queried for data?
A
A request is created then sent to the appropriate target, a callback is set and is invoked when the web service returns some data. This avoids having the execution block until data is returned.
