January 2017
Beginner to intermediate
624 pages
22h 42m
English
book
Android Programming: The Big Nerd Ranch Guide, Third Edition
by Bill Phillips, Chris Stewart, Kristin Marsicano
Content preview from Android Programming: The Big Nerd Ranch Guide, Third Edition
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Hosting a UI Fragment
To host a UI fragment, an activity must:
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define a spot in its layout for the fragment’s view
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manage the lifecycle of the fragment instance
The fragment lifecycle
Figure 7.11 shows the fragment lifecycle. It is similar to the activity lifecycle: It has stopped, paused, and resumed states, and it has methods you can override to get things done at critical points – many of which correspond to activity lifecycle methods.
Figure 7.11 Fragment lifecycle diagram
The correspondence is important. Because a fragment works on behalf of an activity, its state should reflect the activity’s state. ...
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