5. Broadcasting and Receiving Intents
The Android operating system enables applications to communicate with one another in a variety of ways. One way that information can be communicated across process or application boundaries is by using the broadcast event system built into the platform through the use of Intent objects. When an application has something it wants communicated, it can broadcast that information to the system at large. Applications that are interested in that sort of event can listen for and react to that broadcast by becoming a broadcast receiver. Although we develop numerous examples of broadcasts in the other chapters of this book, we felt it was worthwhile to cover some of the basics of broadcasting on the Android platform ...
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