broadcastreceiver
broadcastreceiver-
For more information , see the BroadcastReceiver class .
想要更多的信息，见BroadcastReceiver类。
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Classes such as a BroadcastReceiver define code that will execute when external events trigger them .
诸如BroadcastReceiver这样的类定义的代码将在外部事件触发它们时执行。
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A broadcast receiver is implemented as a subclass of BroadcastReceiver and each broadcast is delivered as an Intent object .
一个broadcastreceiver通过继承BroadcastReceiver类来实现，每个broadcast被作为一个Intent对象发布。