xcode 如何在 NSDictionary 中为键和对象添加数组
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How to add arrays for key and object in NSDictionary
提问by Muhammad Faizan
I have 2 arrays. Array AarrayA[0] contains {a,b,c,d,e...} and Array BarrayB[0] contains {a,b,c...}. And both arrays are mutable and have many objects. In NSMutableDictionaryfor each element in Array A (taken as key) should store entire Array B.
我有 2 个数组。数组 AarrayA[0] 包含 {a,b,c,d,e...}，数组 BarrayB[0] 包含 {a,b,c...}。并且这两个数组都是可变的并且有很多对象。在NSMutableDictionary对于在阵列中的每个元素（作为密钥）应该存储整个阵列B.
For example:
例如：
(key value)Array A[0] have entire (object value)Array B(0...200)
（键值）数组 A[0] 具有整个（对象值）数组 B(0...200)
(key value)Array A[1] have entire (object value)Array B(0...200)
（键值）数组 A[1] 具有整个（对象值）数组 B(0...200)
(key value)Array A[2] have entire (object value)Array B(0...200)
（键值）数组 A[2] 具有整个（对象值）数组 B(0...200)
My code:
我的代码：
for (int i=0; i<100; i++)
{
[someDictionary setObject:arrayB forKey:arrayA[i]];
}
this doesn't work and i tried this too :
这不起作用，我也试过这个：
[someDictionary initWithObjects:arrayB forKeys:arrayA[i]]
回答by Kaps18
You should use NSStringfor storing key in key-value pair. So i would recommend
您应该NSString用于将键存储在键值对中。所以我会推荐
for (int i=0; i<100; i++) {
NSString *str=(NSString *)arrayA[i];
[someDictionary setObject:arrayB forKey:str];
}
回答by gnasher729
Your code looks fine in principle. Obviously being fixed to 100 elements is not nice, so I'd write
您的代码原则上看起来不错。显然固定为 100 个元素并不好，所以我会写
for (id key in self.arrayA)
[someDictionary setObject:self.arrayB forKey:key];
回答by karthikeyan
try this ansewer..i don't know brother whether i am understand your question correct or wrong
试试这个答案..我不知道兄弟我是否理解你的问题是对还是错
try my code...
试试我的代码...
NSMutableArray *tempA=[NSMutableArray array];
NSMutableArray *tempB=[NSMutableArray array];
for (int a=0; a<100; a++)
{
[tempA addObject:[NSString stringWithFormat:@"%d",a]];
}
NSMutableArray *dataArray=[NSMutableArray array];
NSMutableDictionary *dict;
for (int i=0; i<[tempA count]; i++)
{
for (int a=0; a<100; a++)
{
dict=[NSMutableDictionary dictionary];
NSString* localTemp=[NSString stringWithFormat:@"key-%@",[tempA objectAtIndex:i]];
[tempB addObject:[NSString stringWithFormat:@"%d",a]];
id object=[tempB objectAtIndex:a];
[dict setObject:object forKey:localTemp];
[dataArray addObject:dict];
}
}
NSLog(@"dictonarry is---->%@",dataArray);
回答by user2885077
NSArray *arrayA = [NSArray arrayWithObjects:@"1",@"2", nil];
NSArray *arrayB = [NSArray arrayWithObjects:@"3",@"4", nil];
NSMutableDictionary *temp = [[NSMutableDictionary alloc]init];
for(int i =0 ; i<[arrayA count];i++)
{
[temp setObject:arrayB forKey:[arrayA objectAtIndex:i]];
}
