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在Android上检测网络连接类型

androidnetworkingwificonnectivity
197

如何在安卓设备上检测网络连接类型？

可以通过调用ConnectivityManager.getActiveNetworkInfo().getType()方法来实现，但是得出的结果是否仅限于Wifi和移动网络呢？

15个回答
1
String active_network = ((ConnectivityManager)
    .getSystemService(Context.CONNECTIVITY_SERVICE))
    .getActiveNetworkInfo().getSubtypeName();

应该可以获取到网络名称

1
下面展示了不同的方法。请注意，ConnectivityManager类中有很多网络类型。此外，如果API >= 21，则可以在NetworkCapabilities类中检查网络类型。
    ConnectivityMonitor connectivityMonitor = ConnectivityMonitor.getInstance(this);
    boolean isWiFiConnected = connectivityMonitor.isWifiConnection();
    boolean isMobileConnected = connectivityMonitor.isConnected(ConnectivityManager.TYPE_MOBILE);
    Log.e(TAG, "onCreate: isWiFiConnected " + isWiFiConnected);
    Log.e(TAG, "onCreate: isMobileConnected " + isMobileConnected);
    ConnectivityMonitor.Listener connectivityListener = new ConnectivityMonitor.Listener() {
        @Override
        public void onConnectivityChanged(boolean connected, @Nullable NetworkInfo networkInfo) {
            Log.e(TAG, "onConnectivityChanged: connected " + connected);
            Log.e(TAG, "onConnectivityChanged: networkInfo " + networkInfo);
            if (networkInfo != null) {
                boolean isWiFiConnected = networkInfo.getType() == NetworkCapabilities.TRANSPORT_WIFI;
                boolean isMobileConnected = networkInfo.getType() == NetworkCapabilities.TRANSPORT_CELLULAR;
                Log.e(TAG, "onConnectivityChanged: isWiFiConnected " + isWiFiConnected);
                Log.e(TAG, "onConnectivityChanged: isMobileConnected " + isMobileConnected);
            }
        }
    };
    connectivityMonitor.addListener(connectivityListener);
1
我使用这个简单的代码：

fun getConnectionInfo(): ConnectionInfo {
    val cm = appContext.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager

    return if (cm.activeNetwork == null) {
        ConnectionInfo.NO_CONNECTION
    } else {
        if (cm.isActiveNetworkMetered) {
            ConnectionInfo.MOBILE
        } else {
            ConnectionInfo.WI_FI
        }
    }
}
不完整的答案：ConnectionInfo 是什么？ - Quick learner
0

目前仅支持 MOBILE 和 WIFI。查看可读性高的 类型函数。

0
使用Kotlin查找连接类型值
/**
 * 0 = no connection info available
 * 1 = mobile data
 * 2 = wifi
 * 3 = vpn
 * @receiver Context
 * @return Int
 */
fun Context.getConnectionType(): Int {
    var result = 0 // Returns connection type. 0: none; 1: mobile data; 2: wifi; 3: vpn
    val cm = connectivityManager
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        cm?.run {
            getNetworkCapabilities(cm.activeNetwork)?.run {
                when {
                    hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> {
                        result = 2
                    }
                    hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> {
                        result = 1
                    }
                    hasTransport(NetworkCapabilities.TRANSPORT_VPN) -> {
                        result = 3
                    }
                }
            }
        }
    } else {
        cm?.run {
            activeNetworkInfo?.run {
                when (type) {
                    ConnectivityManager.TYPE_WIFI -> {
                        result = 2
                    }
                    ConnectivityManager.TYPE_MOBILE -> {
                        result = 1
                    }
                    ConnectivityManager.TYPE_VPN -> {
                        result = 3
                    }
                }
            }
        }
    }
    return result
}
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