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Java for Android, Second Edition by Budi Kurniawan

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Chapter 48

Broadcast Receivers

The Android system constantly broadcasts intents that occur during the running of the operating system and applications. In addition, applications can also broadcast user-defined intents. You can capitalize on these broadcasts by writing broadcast receivers in your application.

This chapter explains how to create broadcast receivers.

Overview

A broadcast receiver, or a receiver for short, is an application component that listens to a certain intent broadcast, similar to Java listeners that listen to events. Table 48.1 shows intent actions defined in the android.content.Intent class for which you can write a receiver.

Action

Description

ACTION_TIME_TICK

The current time has changed. ...

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