Android P API 28 中弃用的 ConnectivityManager.TYPE_WIFI 的替代方法是什么？

Question

ConnectivityManager.TYPE_WIFI is deprecated in Android P API 28. Also, NetworkInfo#getType and ConnectivityManager.TYPE_MOBILE 也已弃用。

那么，他们有哪些选择呢？我了解到我们必须使用 NetworkCapabilities class 中的方法。但是，我无法将所有内容合并到一个地方，例如如何在 NetworkCapabilities class 中执行 getType() 以及如何在其上添加 WIFI 和蜂窝数据检查？

请协助。

Answer 1

ConnectivityManager.TYPE_WIFI 已弃用。你应该使用 NetworkCapabilities.

这取代了旧的 ConnectivityManager.TYPE_MOBILE 网络选择方法。与其指出需要 Wi-Fi，因为应用程序需要高带宽并且在出现新的快速网络（如 LTE）时有过时的风险，应用程序应该指定它需要高带宽。同样，如果应用程序需要不按流量计费的网络进行批量传输，它可以指定而不是假设所有基于蜂窝的连接都按流量计费，而所有基于 Wi-Fi 的连接都不是。

Applications should instead use NetworkCapabilities.hasTransport(int) or requestNetwork(NetworkRequest, NetworkCallback) to request an appropriate network. for supported transports.

你可以这样试试

NetworkAgentInfo networkAgent;
int type = ConnectivityManager.TYPE_NONE;
if (networkAgent.networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
     type = ConnectivityManager.TYPE_MOBILE;
} else if (networkAgent.networkCapabilities.hasTransport(
     NetworkCapabilities.TRANSPORT_WIFI)) {
     type = ConnectivityManager.TYPE_WIFI;
}

Answer 2

您可以使用以下代码段来检查您是否有 Wifi 连接或移动网络：

ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
    Network network = connectivityManager.getActiveNetwork();
    NetworkCapabilities capabilities = connectivityManager.getNetworkCapabilities(network);
    return capabilities != null && (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) || capabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR));
}

Answer 3

使用以下方法.. 19/06/2019

public boolean isconnectedToWifi(Context context) {
    ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivityManager == null) {
        return false;
    }

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {
        Network network = connectivityManager.getActiveNetwork();
        NetworkCapabilities capabilities = connectivityManager.getNetworkCapabilities(network);
        if (capabilities == null) {
            return false;
        }
        return capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
    } else {
        NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        if (networkInfo == null) {
            return false;
        }
        return networkInfo.isConnected();
    }
}

Answer 4

这就是我如何在不使用已弃用的库和添加对 marshamallow 设备的支持的情况下检查 WIFI 是否可用的方法-

@ExperimentalCoroutinesApi
    suspend fun isWifiAvailable(): Boolean {
        val connectivityManager =
            ContextCompat.getSystemService(context, ConnectivityManager::class.java) ?: return false
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            val networkCapabilities = connectivityManager.activeNetwork ?: return false
            val activeNetwork =
                connectivityManager.getNetworkCapabilities(networkCapabilities) ?: return false
            return activeNetwork.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)
        } else {
            return connectivityManager.isNetworkAvailable(NetworkCapabilities.TRANSPORT_WIFI)
//            val activeNetwork = connectivityManager.`activeNetworkInfo`
//            return activeNetwork?.type == ConnectivityManager.TYPE_WIFI
        }
    }

    @ExperimentalCoroutinesApi
    private suspend fun ConnectivityManager.isNetworkAvailable(vararg transportType: Int): Boolean {
        return suspendCancellableCoroutine { continuation ->
            val builder = NetworkRequest.Builder()
            transportType.forEach {
                builder.addCapability(it)
            }
            val networkRequest = builder.build()
            val networkCallback = object : ConnectivityManager.NetworkCallback() {
                override fun onAvailable(network: Network) {
                    super.onAvailable(network)
                    continuation.resume(true, null)
                    unregisterNetworkCallback(this)
                }

                override fun onLost(network: Network) {
                    super.onLost(network)
                    continuation.resume(false, null)
                    unregisterNetworkCallback(this)
                }

                override fun onUnavailable() {
                    super.onUnavailable()
                    continuation.resume(false, null)
                    unregisterNetworkCallback(this)
                }
            }
            registerNetworkCallback(networkRequest, networkCallback)
        }
    }

Android P API 28 中弃用的 ConnectivityManager.TYPE_WIFI 的替代方法是什么？

What is alternative to ConnectivityManager.TYPE_WIFI deprecated in Android P API 28?

android

android-sdk-manager

android-api-levels