iphone – 当我们从ios中的json获取时,如何检查valueOfKey是Arra

发布时间：2020-12-14 18:56:12 所属栏目：百科来源：网络整理

导读：我有2个案例来解析 JSON首先是： { "post_filter_data": { "Items": [ { "ItemID": "50cb4e46b5d30b0002000009","ItemName": "Fruit salad test","ItemPrice": "122.0","ItemDescription": "test test","ItemImageUrl": "http://s3.amazonaws.com/menubis-mm

我有2个案例来解析 JSON首先是：

{
    "post_filter_data": {
        "Items": [
            {
                "ItemID": "50cb4e46b5d30b0002000009","ItemName": "Fruit salad test","ItemPrice": "122.0","ItemDescription": "test test","ItemImageUrl": "http://s3.amazonaws.com/menubis-mms-prototype-dev/menubis/assets/50cb4e64b5d30b0002000013/landing_page.jpg?1355501156"
            },{
                "ItemID": "50d0870d910ef2000200000a","ItemName": "test new","ItemPrice": "120.0","ItemDescription": null,"ItemImageUrl": "http://s3.amazonaws.com/menubis-mms-prototype-dev/menubis/assets/50d0871a910ef20002000015/Screenshot-2.png?1355843354"
            }
        ]
    }
}

其中Items是一个NSArray,它很容易解析,但只有一个对象我才能通过异常.
第二个JSON是Items标签有一个对象：

{
    "post_filter_data": {
        "Items": {
            "ItemID": "50d1e9cd9cfbd20002000016","ItemName": "test","ItemDescription": "test","ItemImageUrl": "http://s3.amazonaws.com/menubis-mms-prototype-dev/menubis/assets/50d1ea019cfbd20002000022/11949941671787360471rightarrow.svg.med.png?1355934209"
        }
    }
}

我的代码就在这里我在解析它：

NSDictionary *dictMenu=[responseDict valueForKey:@"post_filter_data"];
NSArray* subMenuArray=[dictMenu valueForKey:@"Items"];

有没有办法我检查出valueForKey：@“Items”是数组或对象.

解决方法

在_recievedData中获取数据rx,然后检查对象的类.

id object = [NSJSONSerialization
                     JSONObjectWithData:_recievedData
                     options:kNilOptions
                     error:&error];
    if (error)
    {
         NSLog(@"Error in rx data:%@",[error description]);
    }
    if([object isKindOfClass:[NSString class]] == YES)
    {
         NSLog(@"String rx from server");
    }
    else if ([object isKindOfClass:[NSDictionary class]] == YES)
    {
         NSLog(@"Dictionary rx from server");
    }
    else if ([object isKindOfClass:[NSArray class]] == YES)
    {
         NSLog(@"Array rx from server");
    }

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!