How to get an array type [1,2] instead of (1, 2) in Objective-c?

问题

I'm trying to send an array in post JSONModel call. I need convett my array to NSString and send the array in format:

[1, 2, 3] 

but when I convert this to NSString and print my array, this has the format:

(1, 2, 3)


NSMutableArray *array= [NSMutableArray arrayWithObjects:@"1", @"2",@"3",@"4", nil];
NSString *arraString = [NSString stringWithFormat:@"%@", arr];
NSLog(@"%@",arraString);

How can I create this with [] format?

回答1:

NSMutableArray *array= [NSMutableArray arrayWithObjects:@"1", @"2",@"3",@"4", nil];
NSData *jsond = [NSJSONSerialization dataWithJSONObject: array options:NSJSONWritingPrettyPrinted error:NULL];
NSString *json = [[NSString alloc] initWithData:jsond encoding:NSUTF8StringEncoding];

NSLog(@"%@", json);

回答2:

What you can do is

NSString *joinedString = [array componentsJoinedByString:@","];
NSString *arraString = [NSString stringWithFormat:@"(%@)", joinedString];

Hope this will fix your problem

来源：https://stackoverflow.com/questions/39539360/how-to-get-an-array-type-1-2-instead-of-1-2-in-objective-c