关于 BroadcastReceiver 类的 Android WiFi Direct (P2P) 问题

Posted 2023-02-23

【中文标题】关于 BroadcastReceiver 类的 Android WiFi Direct (P2P) 问题

【英文标题】：Andoird WiFi Direct (P2P) question about BroadcastReceiver class

【发布时间】：2021-02-27 11:37:03

【问题描述】：

我正在尝试开发 WiFi Direct 数据传输应用程序，this official help page 是我目前的信息来源。不过，这句话我没看懂-

For the class' constructor, you will use parameters for the WifiP2pManager, WifiP2pManager.Channel, and the activity that this broadcast receiver will be registered in.

他们所说的活动是下面类中的私有成员-

/**
* A BroadcastReceiver that notifies of important Wi-Fi p2p events.
*/
public class WiFiDirectBroadcastReceiver extends BroadcastReceiver 

   private WifiP2pManager manager;
   private Channel channel;
   private MyWiFiActivity activity; // <-- THIS ONE

   public WiFiDirectBroadcastReceiver(WifiP2pManager manager, Channel channel,
           MyWifiActivity activity) 
       super();
       this.manager = manager;
       this.channel = channel;
       this.activity = activity;
   

当我尝试按原样实现该类时，我收到错误 Cannot resolve symbol MyWiFiActivity。

我应该包含该类型的导入，还是取决于我以后需要做的其他事情？

【参考方案1】：

他们所指的活动是在与教程关联的sample project 中创建的。它注册广播接收器并处理生命周期事件等。您应该更改对您选择在其中实现相应回调的任何类的引用。