当我们从ios中的json获取时,如何检查valueOfKey是Array还是Object
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exception。 第二个JSON
是Items标签有一个对象:
{ "post_filter_data": { "Items": { "ItemID": "50d1e9cd9cfbd20002000016", "ItemName": "test", "ItemPrice": "120.0", "ItemDescription": "test", "ItemImageUrl": "http://s3.amazonaws.com/menubis-mms-prototype-dev/menubis/assets/50d1ea019cfbd20002000022/11949941671787360471rightarrow.svg.med.png?1355934209" } } }
我的代码在这里我正在解析它:
NSDictionary *dictMenu=[responseDict valueForKey:@"post_filter_data"]; NSArray* subMenuArray=[dictMenu valueForKey:@"Items"];
有没有办法我检查出valueForKey:@"Items"
是Array
或Object
。
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"); }
是的,您可以使用class
来检查
if ([[dictMenu valueForKey:@"Items"] isKindOfClass:[NSArray class]]) { // array inside }