Android中网络判断

    

     /**
      * 检查当前网络是否可用，需要权限ACCESS_NETWORK_STATE。
      *
      *@paramcontext
      *@return boolean 
      */
     public static boolean isConnectingToInternet(Context context) {
           ConnectivityManager connectivity = (ConnectivityManager) (context).getSystemService(Context.CONNECTIVITY_SERVICE);
           if(connectivity !=null) {
                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;
     }

     /**
      * 获取手机网络类型（移动网络 or Wifi网络）
      *
      *@paramcontext
      *@return int
      */
     public static int getNetType(Context context) {
           ConnectivityManager connectMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
           NetworkInfo info = connectMgr.getActiveNetworkInfo();
           if(info !=null) {
                int type = info.getType();
                if(type == ConnectivityManager.TYPE_WIFI) {
                     return NET_TYPE_WIFI;
                }else if(type == ConnectivityManager.TYPE_MOBILE) {
                     return NET_TYPE_MOBILE;
                }
           }
           return -1;
     }