How to cast an object to class in Objective-C

Question

Is there a way to cast objects in objective-c?

For example, I have that object and want to cast it into a class:

NSManagedObject *item = [array objectAtIndex:indexPath.row];

I don't what the problem is; your code should work without modification. — trojanfoe, Aug 28 '14 at 10:34
possible duplicate of [How to cast an object in Objective-C](http://stackoverflow.com/questions/690748/how-to-cast-an-object-in-objective-c) — Mohit, Aug 28 '14 at 10:35

NeverHopeless · Accepted Answer · 2014-08-28T10:45:51.307

17

I guess you want like this:

if ([[[array objectAtIndex:indexPath.row] isKindOfClass:[NSManagedObject class]])
{
    NSManagedObject *item = (NSManagedObject *)[array objectAtIndex:indexPath.row]; 
}

Have a look at this link first, under Auto Generating Model Files, see how author changed NSManagedObject to a strongly typed object.

So what will be left for you is:

if ([[[array objectAtIndex:indexPath.row] isKindOfClass:[Contact class]])
{
    Contact *item = (Contact *)[array objectAtIndex:indexPath.row]; 
}

Hope that helps!

edited Aug 28 '14 at 10:45

answered Aug 28 '14 at 10:33

NeverHopeless

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Also, instead of casting you can use Strongly Typed Objects. It will save your cast each time you access them. – NeverHopeless Aug 28 '14 at 10:35
I want to cast the object into a class i have it called contact – mowi Aug 28 '14 at 10:38

score 2 · Answer 2 · answered Aug 28 '14 at 10:32

2

Yes simply do

NSManagedObject *item = (NSManagedObject *)[array objectAtIndex:indexPath.row];

answered Aug 28 '14 at 10:32

Popeye

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NSManagedObject is the name of my class ? – mowi Aug 28 '14 at 10:34
YES write there name of your class – Mohit Aug 28 '14 at 10:38
As you haven't specified a class I automatically assumed that you wanted to cast to `NSManagedObject *` which is a valid assumption really. But YES your class name would go there. – Popeye Aug 28 '14 at 10:40

How to cast an object to class in Objective-C

2 Answers2