NetworkInfo已被API 29弃用。

Question

我想检查一下网络连接。因此，我使用了ConnectivityManager.activateNetworkInfo.isConnected

不幸的是，这在API 29中已被弃用。

private fun isOnline(): Boolean {
    val connectivityManager = appContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    val networkInfo = connectivityManager.activeNetworkInfo
    return networkInfo != null && networkInfo.isConnected
}

您可以在此处查看折旧消息

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Answer 1

基于Google Document它已被弃用

• getActiveNetworkInfo在接口上被弃用29.
• getAllNetworkInfo在接口23上被弃用。

所以，如果你想知道网络连接状态，你可以使用下面的代码。

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 {
        return connectivityManager.activeNetworkInfo?.isConnected ?: false
    }
}

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();
    }
}

你可以在这里看到所有的NetworkCapability。