NSString的多个URL字符串的分割和截取技巧

今天开发高德云图，返回来的image是字符串组，不是Json，也不是字典，我的妈啊！你说的是真的！

preurl=(

        {

        "_id" = 54a358f2e4b053daeaf71fb7;

        "_preurl" = "http://img.yuntu.amap.com/54a358f2e4b053daeaf71fb7@!thumb";

        "_url" = "http://img.yuntu.amap.com/54a358f2e4b053daeaf71fb7@!orig";

    },

        {

        "_id" = 54a36713e4b053daeaf7213e;

        "_preurl" = "http://img.yuntu.amap.com/54a36713e4b053daeaf7213e@!thumb";

        "_url" = "http://img.yuntu.amap.com/54a36713e4b053daeaf7213e@!orig";

    },

        {

        "_id" = 54ab7e91e4b053daeaf7c7ea;

        "_preurl" = "http://img.yuntu.amap.com/54ab7e91e4b053daeaf7c7ea@!thumb";

        "_url" = "http://img.yuntu.amap.com/54ab7e91e4b053daeaf7c7ea@!orig";

    },

        {

        "_id" = 54ab7e97e4b053daeaf7c7ed;

        "_preurl" = "http://img.yuntu.amap.com/54ab7e97e4b053daeaf7c7ed@!thumb";

        "_url" = "http://img.yuntu.amap.com/54ab7e97e4b053daeaf7c7ed@!orig";

    },

        {

        "_id" = 54ab7e9de4b053daeaf7c7ef;

        "_preurl" = "http://img.yuntu.amap.com/54ab7e9de4b053daeaf7c7ef@!thumb";

        "_url" = "http://img.yuntu.amap.com/54ab7e9de4b053daeaf7c7ef@!orig";

    },

        {

        "_id" = 54ab7ea6e4b053daeaf7c7f1;

        "_preurl" = "http://img.yuntu.amap.com/54ab7ea6e4b053daeaf7c7f1@!thumb";

        "_url" = "http://img.yuntu.amap.com/54ab7ea6e4b053daeaf7c7f1@!orig";

    }

)  

我现在想要分割他们，并放到不同的数值或字典，直接上方法。【ps：我不知道有没有更好的方法，还有这个方法的性能如何，唉，要学习的太多，我还得慢慢来，虚心吧！少年！】

//从数据中分段
        NSArray *arry=[imageStr componentsSeparatedByString:@"}"];
        
        for (int i = 0;i < arry.count -1;i++)
        {
            NSString * imageStrring = arry[i];
            //去掉所以换行
            //imageStr = [imageStr stringByReplacingOccurrencesOfString:@"
" withString:@""];
            //去掉所有空格
            imageStr = [imageStr stringByReplacingOccurrencesOfString:@" " withString:@""];
            NSString * preurl = (NSString *) [[[[imageStrring componentsSeparatedByString:@"preurl"=""] objectAtIndex:1] componentsSeparatedByString:@"";"] objectAtIndex:0];
            
            //NSLog(@"
 %@ 
",preurl);
            
            [self.thumbPhotosUrlArray addObject:preurl];
            
            NSString * url = (NSString *) [[[[imageStrring componentsSeparatedByString:@"_url"=""] objectAtIndex:1] componentsSeparatedByString:@"";"] objectAtIndex:0];
            [self.origPhotosUrlArray addObject:url];
            
            //NSLog(@"
 %@ 
",url);
            
        }
        

有必要解释一下吗？

我的思路是，先以“｝”，分割字符串，得到的数组，在一个一个的截取～～

nice～