January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second EditionBecome 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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4.3.6. Intents for Launching Other Activities
Android uses a technique known as intent messaging to communicate information between activities within one app or activities in separate apps. Each Activity can specify intent filters indicating actions the Activity is capable of handling. Intent filters are defined in the AndroidManifest.xml file. In fact, in each app so far, the IDE created an intent filter for the app’s only Activity indicating that it could respond to the predefined action named android.intent.action.MAIN, which specifies that the Activity can be used to launch the app to begin its execution.
An Intent is used to launch an Activity—it indicates an action to be performed and the data on which to perform that action. In this app, ...
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