java - 将目标 sdk 更新到 29 后导入已弃用的警告

Question

在 build.gradle 中将编译和 targetSdkVersion 更新为“29”后 我收到弃用警告:

warning: [deprecation] NetworkInfo in android.net has been deprecated
import android.net.NetworkInfo;
                  ^

因此构建失败。但我使用网络信息来与 API 版本 16-29 兼容。我应该如何处理针对 api“29”及以上版本的已弃用导入？

Answer 1

我找到了这个问题的解决方案。您必须这样编写方法。

@SuppressWarnings("deprecation")
public boolean isConnected() {
        ConnectivityManager cm = (ConnectivityManager) AnkiDroidApp.getInstance().getApplicationContext()
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (cm == null) {
            return false;
        }
        /* NetworkInfo is deprecated in API 29 so we have to check separately for higher API Levels */
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            Network network = cm.getActiveNetwork();
            if (network == null) {
                return false;
            }
            NetworkCapabilities networkCapabilities = cm.getNetworkCapabilities(network);
            if (networkCapabilities == null) {
                return false;
            }
            boolean isInternetSuspended = !networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED);
            return networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                    && networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)
                    && !isInternetSuspended;
        } else {
            android.net.NetworkInfo networkInfo = cm.getActiveNetworkInfo();
            return networkInfo != null && networkInfo.isConnected();
        }
    }

记住抑制警告。