android - getActiveNetworkInfo() 在 API 29 中已弃用

Question

我正在使用一段代码来检查用户是否有互联网 Activity ，但在定位 sdk29 后，以下功能已被弃用

NetworkInfo

NetworkInfo.isConnected()

getActiveNetworkInfo()

这是代码:

public static boolean isNetworkAvailable(Context context) {
    if(context == null) { return false; }
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    // if no network is available networkInfo will be null, otherwise check if we are connected
    try {
        NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
        if (activeNetworkInfo != null && activeNetworkInfo.isConnected()) {
            Log.i("update_statut","Network is available : true");
            return true;
        }
    } catch (Exception e) {
        Log.i("update_statut",""+ e.getMessage());
    }
    Log.i("update_statut","Network is available : FALSE ");
    return false;
}

Answer 1

基于 Google Document 已弃用它

• getActiveNetworkInfo 在 API 29 上已弃用。
• getAllNetworkInfo 在 API 23 上已弃用。

因此，如果您想查找网络连接状态，可以使用此代码。

Kotlin :

private fun isNetworkAvailable(context: Context): Boolean {
    val connectivityManager = context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        val nw      = connectivityManager.activeNetwork ?: return false
        val actNw = connectivityManager.getNetworkCapabilities(nw) ?: return false
        return when {
            actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> true
            actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> true
            //for other device how are able to connect with Ethernet
            actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) -> true
            //for check internet over Bluetooth
            actNw.hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH) -> true
            else -> false
        }
    } else {
        val nwInfo = connectivityManager.activeNetworkInfo ?: return false
        return nwInfo.isConnected
    }
}

Java:

private Boolean isNetworkAvailable(Application application) {
    ConnectivityManager connectivityManager = (ConnectivityManager) application.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        Network nw = connectivityManager.getActiveNetwork();
        if (nw == null) return false;
        NetworkCapabilities actNw = connectivityManager.getNetworkCapabilities(nw);
        return actNw != null && (actNw.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) || actNw.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) || actNw.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) || actNw.hasTransport(NetworkCapabilities.TRANSPORT_BLUETOOTH));
    } else {
        NetworkInfo nwInfo = connectivityManager.getActiveNetworkInfo();
        return nwInfo != null && nwInfo.isConnected();
    }
}

你可以看到所有NetworkCapability在这里。