NetworkUtil：网络状态检测工具类

Bertha 。 2022-06-01 23:37 243阅读 0赞

一个检测网络状态的工具类(●’◡’●)  
记得加上这两个权限:

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
        <uses-permission android:name="android.permission.INTERNET"/>

public class NetworkUtil { 
        /** * 检测网络状态 * * @param context * @return */
        public static boolean isNetworkAvailable(Context context) {
            ConnectivityManager connectivity = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            if (connectivity == null) {
                return false;
            } else {
                NetworkInfo[] info = connectivity.getAllNetworkInfo();
                if (info != null) {
                    for (int i = 0; i < info.length; i++) {
                        if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                            return true;
                        }
                    }
                }
            }
            return false;
        }
    
        /*** * 获取网络类型 * 0: 2g 1: 3g 2: 4g 3: wifi 4: 其他 * @param context * @return */
        public static int getNetworkType(Context context){
            int networkType = 0;
            NetworkInfo networkInfo = ((ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE))
                    .getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.isConnected()){
                if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI){
                    networkType = 3;
                }else if (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE){
                    switch (networkInfo.getSubtype()){
                        case TelephonyManager.NETWORK_TYPE_GPRS:
                        case TelephonyManager.NETWORK_TYPE_EDGE:
                        case TelephonyManager.NETWORK_TYPE_CDMA:
                        case TelephonyManager.NETWORK_TYPE_1xRTT:
                        case TelephonyManager.NETWORK_TYPE_IDEN: //api<8 : replace by 11
                            networkType = 0;
                            break;
                        case TelephonyManager.NETWORK_TYPE_UMTS:
                        case TelephonyManager.NETWORK_TYPE_EVDO_0:
                        case TelephonyManager.NETWORK_TYPE_EVDO_A:
                        case TelephonyManager.NETWORK_TYPE_HSDPA:
                        case TelephonyManager.NETWORK_TYPE_HSUPA:
                        case TelephonyManager.NETWORK_TYPE_HSPA:
                        case TelephonyManager.NETWORK_TYPE_EVDO_B: //api<9 : replace by 14
                        case TelephonyManager.NETWORK_TYPE_EHRPD:  //api<11 : replace by 12
                        case TelephonyManager.NETWORK_TYPE_HSPAP:  //api<13 : replace by 15
                            networkType = 1;
                            break;
                        case TelephonyManager.NETWORK_TYPE_LTE:    //api<11 : replace by 13
                            networkType = 2;
                            break;
                        default:
                            String subTypeName = networkInfo.getSubtypeName();
                            if (subTypeName.equalsIgnoreCase("TD-SCDMA")
                                    || subTypeName.equalsIgnoreCase("WCDMA")
                                    || subTypeName.equalsIgnoreCase("CDMA2000"))
                            {
                                networkType = 1;
                            }
                            else
                            {
                                networkType = 4;
                            }
                    }
                }
            }
    
            return networkType;
        }
    
        /** * 判断是否是wifi * * @param context * @return */
        public static boolean isWifiConnected(Context context) {
            if (context != null) {
                ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                        .getSystemService(Context.CONNECTIVITY_SERVICE);
                NetworkInfo networkInfo = mConnectivityManager.getActiveNetworkInfo();
                if (networkInfo != null && networkInfo.isAvailable() && networkInfo.isConnected()
                        && networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                    return true;
                }
            }
            return false;
        }
    
    }