要使用Android的WiFi-Direct组件,可以按照以下步骤进行操作:
private WifiP2pManager manager;
private WifiP2pManager.Channel channel;
private BroadcastReceiver receiver;
private IntentFilter intentFilter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 初始化WiFi-Direct相关对象
manager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
channel = manager.initialize(this, getMainLooper(), null);
// 创建BroadcastReceiver,用于响应WiFi-Direct事件
receiver = new WiFiDirectBroadcastReceiver(manager, channel, this);
// 创建IntentFilter,指定要接收的WiFi-Direct事件
intentFilter = new IntentFilter();
intentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);
}
@Override
protected void onResume() {
super.onResume();
registerReceiver(receiver, intentFilter);
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
public class WiFiDirectBroadcastReceiver extends BroadcastReceiver {
private WifiP2pManager manager;
private WifiP2pManager.Channel channel;
private MainActivity activity;
public WiFiDirectBroadcastReceiver(WifiP2pManager manager, WifiP2pManager.Channel channel, MainActivity activity) {
super();
this.manager = manager;
this.channel = channel;
this.activity = activity;
}
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
// WiFi Direct状态发生改变
// 可以使用manager获取当前的WiFi Direct状态
} else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
// WiFi Direct可用的对等设备列表发生改变
// 可以使用manager获取可用的对等设备列表
} else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
// WiFi Direct连接状态发生改变
// 可以使用manager获取当前的连接状态
} else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
// 本设备的WiFi Direct信息发生改变
// 可以使用manager获取本设备的WiFi Direct信息
}
}
}
这些代码示例可以帮助你开始使用Android的WiFi-Direct组件。你可以根据需要添加其他的逻辑,例如发现和连接对等设备、发送和接收数据等。