Broadcast Processing Mechanism of Android system

Broadcast in Android is widely used.ProgramCommunication is similar to the event processing mechanism. The difference is that broadcast processing is a system-level event processing process (generally event processing is a control-level process ). In this process, intent objects are still inseparable and broadcast events are understood.

The handling process, flexible use of the broadcast processing mechanism, can often achieve special effects in key aspects, for example, which blacklist function, when a call is made, that is, if an incoming call broadcast is generated, the broadcastreceiver that receives the incoming call broadcast receives the incoming call number and the blacklist.

If the number is matched, the call is processed accordingly, such as phone call or mute. In this example, the process of sending, receiving, and processing broadcast events is involved.

Compare the broadcast knowledge of the Android system and list the following Mind Map:

 

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To be continued ......