ios - Convert NSDictionary to NSMutableArray

Question

I have this code:

NSDictionary *jsonGuardado = [self dictionaryFromJson:JSON];
NSLog(@"HOLA %@",jsonGuardado);
NSMutableArray *arrayCodigos = [jsonGuardado objectForKey:@"code"];
codigos = arrayCodigos;

(Codigos is an NSMutableArray)

The NSLOG return this:

HOLA (
        {
        code = 22051310;
    },
        {
        code = 22051311;
    },
        {
        code = 22051312;
    },
        {
        code = 22051313;
    }
)

But right after this, a message error says:

-[JKArray objectForKey:]: unrecognized selector sent to instance

I search this error in Google and here and all the questions I found not help me.

I'm using the JSONKit for make the dictionaryFromJson method.

Answer 1

你试试这个，

NSArray *jsonGuardado = [self dictionaryFromJson:JSON];
NSLog(@"HOLA %@",jsonGuardado);
NSMutableArray *arrayCodigos = [NSMutableArray arrayWithArray:[jsonGuardado valueForKey:@"code"]];
NSLog(@"arrayCodigos %@", arrayCodigos);

它只会打印值。

Answer 2

在您的情况下，解析器返回一个数组而不是字典。

[self dictionaryFromJson:JSON]返回一个 Json 数组，但您在 NSDictionary 中捕获它

Answer 3

你的日志说它已经是NSArray. 你应该试试下面

NSMutableArray *jsonGuardado = [NSMutableArray array];
jsonGuardado = (id)[self dictionaryFromJson:JSON];
NSLog(@"HOLA %@",jsonGuardado);
NSMutableArray *arrayCodigos = [[jsonGuardado objectAtIndex:0] valueForKey:@"code"];
codigos = [arrayCodigos copy];
NSLog(@"Array %@",codigos);