以编程方式连接到 Android Q 中的 Wifi [英] Connect to Wifi in Android Q programmatically

问题描述

我有这个功能可以在 Wifi 网络中连接，在 Android 10 以下它工作正常，但是当我在 Android 10 上尝试时，我成功连接但没有互联网，我知道它是 Android 10 中的一个错误，但我发现了这个应用程序 可以毫无问题地从 Android 10 连接到 wifi.我被屏蔽了好几天.

I had this function to connect in Wifi network, below Android 10 it works fine, but when I tried on Android 10, I had a successful connection but WITHOUT internet, I knew it's a bug in Android 10 but I found this application which can connect to wifi from Android 10 with no problem. I'm blocked for days.

我的功能:

private void connectToWifi(String ssid, String password)
    {
        WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
            try {
                Log.e(TAG,"connection wifi pre Q");
                WifiConfiguration wifiConfig = new WifiConfiguration();
                wifiConfig.SSID = """ + ssid + """;
                wifiConfig.preSharedKey = """ + password + """;
                int netId = wifiManager.addNetwork(wifiConfig);
                wifiManager.disconnect();
                wifiManager.enableNetwork(netId, true);
                wifiManager.reconnect();

            } catch ( Exception e) {
                e.printStackTrace();
            }
        } else {
            Log.e(TAG,"connection wifi  Q");

            WifiNetworkSpecifier wifiNetworkSpecifier = new WifiNetworkSpecifier.Builder()
                .setSsid( ssid )
                .setWpa2Passphrase(password)
                    .build();

            NetworkRequest networkRequest = new NetworkRequest.Builder()
                    .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
                    .setNetworkSpecifier(wifiNetworkSpecifier)
                    .build();

             connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);


                 networkCallback = new ConnectivityManager.NetworkCallback() {
                @Override
                public void onAvailable(Network network) {
                    super.onAvailable(network);

                     connectivityManager.bindProcessToNetwork(network);
                    Log.e(TAG,"onAvailable");
                }

                  @Override
                  public void onLosing(@NonNull Network network, int maxMsToLive) {
                      super.onLosing(network, maxMsToLive);
                      Log.e(TAG,"onLosing");
                  }

                  @Override
                public void onLost(Network network) {
                    super.onLost(network);
                    Log.e(TAG, "losing active connection");
                }

                @Override
                public void onUnavailable() {
                    super.onUnavailable();
                    Log.e(TAG,"onUnavailable");
                }
            };
            connectivityManager.requestNetwork(networkRequest,networkCallback);


        }
    }

推荐答案

所以，我的解决方案是使用 targetSdkVersion 28 编译您的应用.并连接到 wifi 使用此功能

So, the solution for me is compile your app with targetSdkVersion 28. and for connection to wifi use this function

connectToWifi(String ssid, String key)

这只是暂时的解决方法，等待 Google 发布此错误的修复程序，有关向 Google 报告的问题的更多信息:issuetracker.google.com/issues/138335744

it's just a workaround for the moment, waiting Google to publish a fix for this bug, for more information the issue reported to Google : issuetracker.google.com/issues/138335744

public void connectToWifi(String ssid, String key) {

Log.e(TAG, "connection wifi pre Q");
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = """ + ssid + """;
wifiConfig.preSharedKey = """ + key + """;
int netId = wifiManager.addNetwork(wifiConfig);
if (netId == -1) netId = getExistingNetworkId(wifiConfig.SSID);

wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();

}

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