Android WiFi直接状态

是否可以专门检查WiFi Direct是否打开或关闭？ 我写了一个代码，它只能更新wifi状态，无论是否连接，无论是接入点还是wifi Direct

  ConnectivityManager connManager = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
                    NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

                    if (mWifi.isConnected()) {

                    }
                    if (!mWifi.isConnected()) {


                    }

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我想特别检查WiFi Direct状态。请帮助。

是的，有一种方法可以做到这一点。您可以使用此调用来检查它是否已启用或禁用。下面是一些示例代码：

首先，您需要一个广播接收器：

public class WiFiDirectBroadcastReceiver extends BroadcastReceiver {

    private WifiP2pManager mManager;
    private Channel mChannel;
    private MyWiFiActivity mActivity;

    public WiFiDirectBroadcastReceiver(WifiP2pManager manager, Channel channel,
        MyWifiActivity activity) {
        super();
        this.mManager = manager;
        this.mChannel = channel;
        this.mActivity = activity;
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
            // Check to see if Wi-Fi is enabled and notify appropriate activity
        } else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
            // Call WifiP2pManager.requestPeers() to get a list of current peers
        } else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
            // Respond to new connection or disconnections
        } else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
            // Respond to this device's wifi state changing
        }
    }
}

然后，在广播接收器代码的

onreceive

部分，您有以下代码：

@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    Boolean isEnabled;
    if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
        int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
        if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
            isEnabled = true;
        } else {
            isEnabled = false;
        }
    }
}

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也许这个问题可以帮助您在应用程序启动时如何使用

WifiP2PManager

启用wifi适配器？