来自extern BroadcastReceiver的MainActivity中的访问方法和变量

Question

我的MainActivity类很大。因此，我想将内部类BroadcastListener分成普通类，但我面临的问题是，我不知道如何从此BroadcastReceiver类中访问MainActivity中的方法和变量。有没有办法做到这一点？

我感谢任何帮助。

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	private class BroadcastReceiverListener extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
			if (intent.getAction().equals(
					android.net.wifi.WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {

		                  // This method"deliverBestAccessPoint" is in MainActivity class
						String a = deliverBestAccessPoint(updatedResults);
						//I want to set the "textwifi" varaible in MainActivity
						textWifi.setText(a.toString());
					}

			}

			else if (intent.getAction().equals(
					android.net.ConnectivityManager.CONNECTIVITY_ACTION)) {
				
			}
		}

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Answer 1

创建一个界面

 interface ReceiverInteface
{
 onBroadcastReceive();

}

让mainActivity实现此接口

    mainactivity implements ReceiverInterface

{
   @override
     onBroadcastReceive()
{ 
   //do all you task here
}

}

BroadCastReceiverListner Class

从Mainactiivty传递接口的参考。

   ReceiverInteface recevierListner;
    BroadcastReceiverListener(ReceiverInteface mListner)
    {
     recevierListner = mListner;
    }

private class BroadcastReceiverListener extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(
                    android.net.wifi.WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)) {
recevierListner.onBroadcastReceive();
}
             }

}