我应该如何从 json 字符串中读取数据?苹果手机 [英] How should I read the data from a json string? iphone

问题描述

我有一个 NSString "[{"van" : 1,312, "vuan":12,123}] 并且为了获得每个键的这个值，我这样做:

I have in a NSString "[{"van" : 1,312, "vuan":12,123}] and in order to get this values for every key, I am doing this:

    NSData *data1 = [jsonResponse1 dataUsingEncoding:NSUTF8StringEncoding];
    jsonArray = [NSJSONSerialization JSONObjectWithData:data1 options:kNilOptions error:&err];

    self.van = [NSMutableArray arrayWithCapacity:1];
    self.vuan = [NSMutableArray arrayWithCapacity:1];

    for (NSDictionary *json in jsonArray) {
        NSString * value = [json objectForKey:@"van"];
        [self.van addObject:value];
        lbl1.text = value;

        NSString * value1 = [json objectForKey:@"vuan"];
        [self.vuan addObject:value1];
        lbl4.text = value1;
    }

可能是我不必使用数组，而是直接在 NSDictionary 中转换 NSData.

May be I don't have to use an array and instead to convert the NSData directly in a NSDictionary.

无论如何，我不明白为什么 jsonArray 是 nil，尽管 jsonResponse1 包含我上面写的值.

Anyway, I don't understand why jsonArray is nil, although jsonResponse1 contains the values I have written above.

我的老板把 json 字符串写错了.谢谢大家的建议！:)

My boss have written the json string wrong. Thank you all for your suggestions!:)

推荐答案

您的 JSON 无效.修理它.这个网站是你的朋友.

Your JSON is invalid. Fix it. This site is your friend.

http://jsonlint.com/

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