ConnectivityManager.TYPE_WIFI在Android P API 28中已弃用。此外,NetworkInfo#getType和ConnectivityManager.TYPE_MOBILE也已弃用。
那么,有哪些替代方案呢?我了解我们必须使用 NetworkCapabilities 类中的方法。但是,我无法将所有内容合并到一个地方,例如如何在NetworkCapabilities类中进行getType()以及如何在其上添加WIFI和蜂窝数据检查?
请协助。
答案 0 :(得分:4)
您可以使用以下代码段检查您是否具有Wifi连接或蜂窝网络:
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));
}
答案 1 :(得分:2)
ConnectivityManager.TYPE_WIFI
已已弃用 。您应该使用NetworkCapabilities
。
这取代了旧的 ConnectivityManager.TYPE_MOBILE
网络选择方法。该应用程序应指定需要高带宽,而不是因为应用程序需要高带宽并在出现新的快速网络(如LTE)时有过时的风险而表明需要Wi-Fi,而是应指定它需要高带宽。同样,如果应用程序需要不限流量的网络进行批量传输,则可以指定,而不是假设对所有基于蜂窝的连接都进行了计费,而对所有基于Wi-Fi的连接都没有进行计费。
应用程序应改用
NetworkCapabilities.hasTransport(int)
或requestNetwork(NetworkRequest, NetworkCallback)
要求 适当的网络。支持的运输。
您可以尝试这种方式
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;
}
答案 2 :(得分:2)
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();
}
}
答案 3 :(得分:0)
这就是我在不使用弃用的库和添加对 marshamallow 设备的支持的情况下设法检查 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)
}
}