Objective C - addObject to store array return extra bracket for me how to remove

问题

my data coming in this format

(
   (
      Male,
      Female
   ),
   (
      First,
      Second,
      Third
   )
)

and I want in this format

(
   Male,
   Female
),
(
   First,
   Second,
   Third
)

how to remove extra bracket from array

if ([[allObject objectForKey:@"Fid"] isKindOfClass:[NSArray class]])
{
        NSArray *arr = (NSArray *)[allObject objectForKey:@"Fid"];
        for (int i =0; i<arr.count; i++) {
            if ([[arr valueForKey:@"Values"]objectAtIndex:i] != (id)[NSNull null] ) {
                NSMutableArray *fetchArray = [[NSMutableArray alloc]init];
                [fetchArray addObjectsFromArray:[[arr valueForKey:@"Values"] objectAtIndex:i]];
                [fetchValue addObject:fetchArray];
            }
        }
}

I have tried addObject and addObjectFromArray but in addObjectFromArray output comes in (male,female,first,second,third) and i want like (male,female),(first,second,third)

回答1:

This line [fetchValue addObject:fetchArray]; is the problem. You need use = and not addObject.

In your fetchValuemutableArray you are adding other mutableArray fetchArray, finally you get array of arrays. Only use =

回答2:

Objective-C doesn't care about you want. In this case, you can't get what you want.

You can have an array containing two arrays. That's what you got. You can't have nothing containing two arrays. It just doesn't make sense.

And note that your data isn't coming in this format. What you posted is the output of NSLog, it's not your data.

来源：https://stackoverflow.com/questions/35771327/objective-c-addobject-to-store-array-return-extra-bracket-for-me-how-to-remove

标签

ios

objective-c

nsmutablearray