android广播

动态广播的使用

//注册广播
IntentFilter iFilter = new IntentFilter(Intent.ACTION_MEDIA_MOUNTED);
iFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
iFilter.addAction(Intent.ACTION_MEDIA_REMOVED);
iFilter.addDataScheme("file");
registerReceiver(usbReceiver, iFilter);

//实现广播接收器
private class UsbReceiver{
......//接收到这个广播后做什么
}

//注销广播
unregisterReciver(usbReceiver);

//声明广播
public UsbReceiver usbReceiver = new UsbReceiver();