March 2013
Beginner to intermediate
580 pages
16h 11m
English
Content preview from Android Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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How Android Sees Your Activities
Let’s look at what is going on OS-wise as you move between activities. First, when you click on the GeoQuiz app in the launcher, the OS does not start the application; it starts an activity in the application. More specifically, it starts the application’s launcher activity. For GeoQuiz, QuizActivity is the launcher activity.
When the template created the GeoQuiz application and QuizActivity, it made QuizActivity the launcher activity by default.
Launcher activity status is specified in the manifest by the intent-filter element in QuizActivity’s declaration (Listing 5.17).
Listing 5.17 QuizActivity declared as launcher activity (AndroidManifest.xml)
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" ...
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