public class WiFiDirectBroadcastReceiver extends BroadcastReceiver {
 
    private WifiP2pManager manager;
    private Channel channel;
   private WiFiDirectActivity activity;
 
public WiFiDirectBroadcastReceiver(WifiP2pManagermanager, Channel channel,
            WiFiDirectActivity activity) {
        super();
        this.manager = manager;
        this.channel = channel;
        this.activity = activity;
   }
 @Override
    public void onReceive(Context context, Intent intent) {
//新增實際處理程式碼
}
}
 

首先，WiFiDirectBroadcastReceiver繼承於BroadcastReceiver，需要有onReceive方法的執行。

其次，需要對函式WiFiDirectBroadcastReceiver進行定義，函式定義中通過自定義引數，方便例項化過程中將activity中的必要引數傳遞進來

新建一個class執行callback時也具有類似的方法

例如：

public class Beamsend implements CreateNdefMessageCallback,
        OnNdefPushCompleteCallback {
	    NfcAdapter mNfcAdapter;
	    Beam activity;
public Beamsend(NfcAdapter mNfcAdapter, Beam activity){
	    	super();
	        this.mNfcAdapter = mNfcAdapter;
	        this.activity = activity;// Register callback to set NDEF message
	        
	        mNfcAdapter.setNdefPushMessageCallback(this, activity);
	        // Register callback to listen for message-sent success
	        mNfcAdapter.setOnNdefPushCompleteCallback(this, activity);
    }
}