Android10:无法从我的应用程序使用连接WiFi访问internet

我的应用程序中有以下功能

• 扫描无线网络
• 连接Wifi
• 预期结果：能够访问互联网

代码片段

        Log.e(TAG, "connection wifi  Q");
        WifiNetworkSpecifier wifiNetworkSpecifier;
        wifiNetworkSpecifier = new WifiNetworkSpecifier.Builder()
                .setSsid(ssid)
                .build();

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

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


        ConnectivityManager.NetworkCallback 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);

但我面临的问题是WiFi已连接，但无法访问互联网

我不明白，代码中是否缺少任何内容或其他内容

提前谢谢