[英]fill NSArray from NSDictionary
I'm new to Objective-C, and I would like to know how I can fill my NSArray from a NSDictionary ? 我是Objective-C的新手,我想知道如何从NSDictionary中填充NSArray?
My NSDictionary look like this : 我的NSDictionary看起来像这样:
user = {
items = (
{
nom = nom1;
prenom = prenom1;
},
{
nom = nom2;
prenom = prenom2;
},
{
nom = nom3;
prenom = prenom3;
}
);
};
It is based on a Json, and I want my array to be like : 它基于Json,我希望数组像这样:
"prenom1.nom1", "prenom2.nom2", "prenom3.nom3"
I've tried something like this 我已经尝试过这样的事情
array = [self.users objectForKey:@"user"]
but the result is the same as in my dictionary. 但结果与我的字典相同。
NSDictionary *users = // your dictionary
NSArray *items = users[@"items"];
NSMutableArray *names = [NSMutableArray array];
for (NSDictionary *item in items) {
NSString *name = [NSString stringWithFormat:@"%@.%@", item[@"prenom"], item[@"nom"]];
[names addObject:name];
}
Using the dictionary you supplied this will add all the names in the format you wanted to the names
array. 使用您提供的字典,这会将所有想要的格式的名称添加到
names
数组。
You can use enumerateObjectsUsingBlock
- 您可以使用
enumerateObjectsUsingBlock
NSArray *itemsArray=[user objectForKey:@"items"];
NSMutableArray *outputArray=[[NSMutableArray alloc]init];
[itemsArray enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
[outputArray addObject:[NSString stringWithFormat:@"%@.%@",[obj objectForKey:@"prenom"],[obj objectForKey:@"nom"]]];
}];
outputArray
will contain your names in the required format outputArray
将包含所需格式的名称
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