How to add string objects to NSMutableArray

Question

I have an NSMutableArray named randomSelection:

NSMutableArray *randomSelection; 

I am then trying to add strings to this array if certain criteria are met:

[randomSelection addObject:@"string1"]; 

I am then trying to output the string, to determine if it has added it:

NSString *test = [randomSelection objectAtIndex:0]; NSLog(test); 

However nothing is being output to the error log and I can't figure out why.

Any help/hints appreciated.

Answer 1

I think you are missing to allocate the memory for array. So try this

NSMutableArray *randomSelection = [[NSMutableArray alloc] init]; [randomSelection addObject:@"string1"]; NSString *test = [randomSelection objectAtIndex:0]; NSLog(test); 

Answer 2

NSMutableArray *randomSelection =  [[NSMutableArray alloc]init]; [randomSelection addObject:@"string1"]; 

You need to alloc it first.