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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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 New Project wizard 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 5.18).
Listing 5.18 QuizActivity declared as launcher activity (AndroidManifest.xml)
<manifest xmlns:android="http://schemas.android.com/apk/res/android" ...
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