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       */     publicstaticbooleanisConnectingToInternet(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) {                                returntrue;                           }                     }                }           }           returnfalse;     }     /**      * 获取手机网络类型（移动网络 or Wifi网络）      *      *@paramcontext      *@return int      */     publicstaticintgetNetType(Context context) {           ConnectivityManager connectMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);           NetworkInfo info = connectMgr.getActiveNetworkInfo();           if(info !=null) {                inttype = info.getType();                if(type == ConnectivityManager.TYPE_WIFI) {                     returnNET_TYPE_WIFI;                }elseif(type == ConnectivityManager.TYPE_MOBILE) {                     returnNET_TYPE_MOBILE;                }           }           return-1;     }
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