How to get object from NSInvocationOperation called method?

Question

I have written code in my project

[NSInvocationOperation alloc]
                                        initWithTarget:self
                                        selector:@selector(loadImage)
                                        object:ob

in Method

- (void)loadImage {

}

If you want to get passed object i.e 'ob' in your case, your method 'loadImage' should accept argument like - (void)loadImage:(id) object. — kkumpavat, Jun 08 '14 at 08:28

tomalbrc · Answer 1 · 2014-06-08T18:01:05.087

1

This might help;

// Your NSInvocationOperation definition 
[NSInvocationOperation alloc] initWithTarget:self selector:@selector(loadImage:) object:ob]; 

// Add an argument, this one is called 'sender'
- (void)loadImage:(id)sender { // 'sender' equals your object 'ob' from above
    // Do whatever you want to
}

For further refence / information about NSInvocationOperation: NSInvocationOperation Class Reference

edited Jun 08 '14 at 18:01

answered Jun 08 '14 at 14:28

tomalbrc

171
2
16

If you add a parameter to `loadImage:` then you need to update the `@selector` to `@selector(loadImage:)`. The colon is part of the method name. – rmaddy Jun 08 '14 at 17:31
Sorry, forgot to add it – tomalbrc Jun 08 '14 at 18:01

How to get object from NSInvocationOperation called method?

1 Answers1