android - ConnectivityManager.getActiveNetworkInfo() / NetworkInfo 在 API 29 中已弃用。有什么替代方案？

Question

似乎整个 NetworkInfo在 API 29 上已被弃用。

所以我正在寻找一种替代方法来检查网络是否已连接。例如替代

connectivityManager.activeNetworkInfo?.isConnected == true

旁注：我知道现在有一个回调，但我想同步获取此信息。此外，我当然知道它可能不是一个精确的信息，尽管我想拥有它。

Answer 1

解决方案是这样的：

val capability = connectivityManager.getNetworkCapabilities(connectivityManager.activeNetwork)
return capability?.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET) ?: false

Answer 2

这适用于 API 29：

connectivityManager.isDefaultNetworkActive

Answer 3

android.net.NetworkInfo

此类在 API 级别 29 中已弃用。您应该改为使用ConnectivityManager.NetworkCallbackAPI 来了解连接更改

参考链接https://developer.android.com/reference/android/net/NetworkInfo.html

ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkRequest.Builder builder = new NetworkRequest.Builder();

connectivityManager.registerNetworkCallback(
                    builder.build(),
                    new ConnectivityManager.NetworkCallback() {

                        @Override
                        public void onAvailable(Network network) {
                            // Network Available
                        }


                        @Override
                        public void onLost(Network network) {
                            // Network Not Available
                        }
                    }
            );

Answer 4

解决方案是

public void registerNetworkCallback()
{
    try {
        ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkRequest.Builder builder = new NetworkRequest.Builder();

        connectivityManager.registerNetworkCallback(builder.build(),new ConnectivityManager.NetworkCallback() {
                    @Override
                    public void onAvailable(Network network) {
                        Variables.isNetworkConnected = true; // Global Static Variable
                    }
                    @Override
                    public void onLost(Network network) {
                        Variables.isNetworkConnected = false; // Global Static Variable
                    }
                }

        );
        Variables.isNetworkConnected = false;
    }catch (Exception e){
        Variables.isNetworkConnected = false;
    }
}

在此处查看完整代码：要点

Answer 5

private boolean checkInternetConnection(Activity activity) {
    ConnectivityManager connectivityManager = (ConnectivityManager) activity.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        Network network = null;
        if (connectivityManager == null) {
            return false;
        } else {
            network = connectivityManager.getActiveNetwork();
            NetworkCapabilities networkCapabilities = connectivityManager.getNetworkCapabilities(network);
            if (networkCapabilities == null) {
                return false;
            }
            if (networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) ||
                    networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
                return true;
            }
        }
    } else {
        if (connectivityManager == null) {
            return false;
        }
        if (connectivityManager.getActiveNetworkInfo() == null) {
            return false;
        }
        return connectivityManager.getActiveNetworkInfo().isConnected();
    }
    return false;
}