How to updates array values in iphone app

Question

I have to updates array values at position 2 and 4. How will I update array values. I am initializing my array like below.

ArrayrData=[[NSArray alloc]initWithArray:statuses]; // where statuses is also an array

Answer 1

You can't change the value of NSArray. So initialize your array as Mutable Array

NSMutableArray *ArrayrData=[[NSMutableArray alloc]init];
[ArrayrData addObjectsFromArray:statuses];

You can update the value in a NSMutableArray using,

– replaceObjectAtIndex:withObject:
– replaceObjectsAtIndexes:withObjects:
– replaceObjectsInRange:withObjectsFromArray:range:
– replaceObjectsInRange:withObjectsFromArray: