Question

I have nsmutable array and I want to add object at particular index, how can I check if the array at particular index has a object or not?

I was doing this:

if ([self.myArray objectAtIndex:index] !=nil) {

but I’m getting exceptions most of the time because “beyond bounds”

I’ll really appreciate your help

Answer 1

It is my understanding that you cannot have an index of an array unless you have and object there. What I would suggest is to set all indexes in the array to [NSNull null] and then in your if statement check to see if the object at that index is an NSNull object. if([[self.myArray objectAtIndex:index] isKindOfClass:[NSNull class]]) then if that returns true, have it replace the null object with your object