how to assign string array values to variable

Question

what i am doing is sorting the labels for that i am assigning the string array to temporary string variable as follows:

NSString *tmp = [labels objectAtIndex:j-1];
labels[j-1]=labels[j];
labels[j] = tm;

but it shows error at last line that is incomplete types in assignment how can i solve this?
thank you

NebulaFox · Accepted Answer · 2010-08-09 13:33:21Z

1

Labels is not a C array, it's and Objective-C array, so you need to do

NSMutableArray *labels2 = [[NSMutableArray alloc] initWithArray:labels];
NSString *tmp = [labels objectAtIndex:j-1];
[labels2 insertObject:[labels objectAtIndex:j] atIndex:j-1];
[labels2 insertObject:tm atIndex:j];

edited Aug 9, 2010 at 13:33

answered Aug 9, 2010 at 12:38

NebulaFox

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2 Comments

Mahesh Babu Over a year ago

see show a warning NSArray may not respond to insertobject:atIndex and after application will close due to "NSInternalException reason [NSCFArray insertobject:atindex]:muting meathod sent to immutable method" this will be shown inconsole

NebulaFox Over a year ago

I have edited it so now the NSArray is a NSMutableArray, so you can insert Objects.

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