ios 获取 nsdictionary 中特定键的值
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get values of particular key in nsdictionary
提问by Minkle Garg
I saved the jsonparsing result in a dictionarywhich look like:
我将json解析结果保存为dictionary如下所示：
{
"statusCode":"200",
"body":[
{
"status":"success",
"remarks":null
}
],
"data":[
"abcd":[
{
"category":"a",
"title":"b",
"id":"24"
},
{
"category":"c",
"title":"crd",
"id":"65"
},
{
"category":"ds",
"title":"sd",
"id":"18"
}
]
},
{
"efgh":[
{
"category":"ds",
"title":"sd",
"id":"18"
},
{
"category":"sd",
"title":"sd",
"id":"1"
}
]
},
{
"ijkl":[
{
"category":"ds",
"title":"sd",
"id":"18"
},
{
"category":"sd",
"title":"sd",
"id":"1"
}
]
}
]
}
The data for key @"data" can be saved into an array by using
键@"data" 的数据可以通过使用保存到一个数组中
NSMutableArray *getdata=[[NSMutableArray alloc]init];
getcat=[results objectForKey:@"data"];
Now what should I do for the values(category, title, id)inside the first index i.e. "abcd".
现在我应该为values(category, title, id)第一个索引内部做些什么，即"abcd".
If anyone has any knowledge please look upon that.
如果有人有任何知识，请看一下。
Thanks to all.
谢谢大家。
回答by Anoop Vaidya
Following will give you the desired object
以下将为您提供所需的对象
NSDictionary *dict=[results valueForKeyPath:@"data.abcd"][0];
For individual:
对于个人：
NSString *categoryString=[[results valueForKeyPath:@"data.abcd"][0] objectForKey:@"Category"];
NSString *idString=[[results valueForKeyPath:@"data.abcd"][0] objectForKey:@"id"];
NSString *titleString=[[results valueForKeyPath:@"data.abcd"][0] objectForKey:@"title"];
Also,
还，
NSString *categoryString=dict[@"Category"];
NSString *idString=dict[@"id"];
NSString *titleString=dict[@"title"];
回答by Balu
Check like this:
像这样检查：
NSString *value=[[[getcate valueForKey:@"abcd"] objectAtIndex:0] valueForKey:@"category"];
回答by borrrden
That is an array so use objectAtIndex:(i.e. [getcat objectAtIndex:0]or getcat[0])
这是一个数组，所以使用objectAtIndex:(ie [getcat objectAtIndex:0]or getcat[0])
