BroadcastReceiver

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BroadcastReceiver

1.继承BroadcastReceiver会重写（）方法。2.关于BroadcastReceiver说法不正确的是（）3.当Android系统产生一个广播事件时，只能有一个BroadcastReceiver接收并进行处理。4.BroadcastReceiver接收广播时需要在清单文件或者代码中进行注册并指定要接收的广播事件。