小编Joh*_*es 的帖子

Android Q，WifiNetworkSpecifier 在建立连接后立即失去 Wifi

  @RequiresApi(api = Build.VERSION_CODES.Q)
public void openSystemDialogToConnectToWifi(String ssid, ConnectivityManager.NetworkCallback callback) {
    WifiNetworkSpecifier.Builder builder = new WifiNetworkSpecifier.Builder();
    builder.setSsid(ssid);
    builder.setWpa2Passphrase("secret");


    WifiNetworkSpecifier wifiNetworkSpecifier = builder.build();

    NetworkRequest.Builder networkRequestBuilder = new NetworkRequest.Builder();
    networkRequestBuilder.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
    networkRequestBuilder.addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED);
    networkRequestBuilder.addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED);
    networkRequestBuilder.setNetworkSpecifier(wifiNetworkSpecifier);

    NetworkRequest networkRequest = networkRequestBuilder.build();
    ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    cm.requestNetwork(networkRequest, callback);
}

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这是我用来从我的应用程序连接到新 Wifi 的代码。我得到了一个 IP 地址，wifi 符号在状态栏中非常短暂地可见。下一刻，Wifi-Symbol 消失，系统对话框再次可见，连接到 wifi。

当我调试回调时，它会按照以下顺序执行方法：