Question

我想生成以下格式的JSON字符串：

{
    "test": {
        "currency": "USD",
        "gte": "100"
    }
}

当我执行以下代码行时：

                NSMutableArray *tempArray = [[NSMutableArray alloc] init];
                [tempArray addObject:tempDict];
                [tempArray addObject:subDict];

                [dict setObject:tempArray forKey:@"test"];

我检索了这个JSON字符串。

{
    "test": [{
        "currency": "USD"
    }, {
        "gte": "100"
    }]
}

知道我哪里出错了？

Answer 1

你必须这样做：

NSMutableDictionary *tempDict = [[NSMutableDictionary alloc] init];

[tempDict setObject: @"USD" forKey: @"Currency"];
[tempDict setObject: @"100" forKey: @"gte"];

[dict setObject:tempDict forKey:@"test"];

Answer 2

从您当前的尝试中，您将字典数组添加到字典中，使其显示为

{"test":[{"currency":"USD"},{"gte":"100"}]}

你需要添加字典，试试以下，

 NSDictionary * dict = [NSDictionary dictionaryWithObjectsAndKeys:
                            tempDict,
                            subDict,
                            nil];
    NSDictionary *final=@{@"test": dict};

Answer 3

这个怎么样？

NSMutableDictionary *dic = [@{} mutableCopy];
NSMutableDictionary *tempDic = [@{} mutableCopy];
tempDic[@"currency"] = @"USD";
tempDic[@"gte"] = @"100";
[dic setObject:dic forKey:@"test"];

现代Objective-C风格..

Answer 4

试试这样： -

NSDictionary *yourDict = @{@"test": @{@"currency": @"USD",@"gte": @"100"}};

来自NSMutableDictionary的JSON字符串 -

4 个答案: