Question

Is there a way to set a property after a delay? Such as:

// Compiler hates this
[self performSelector:@selector(imageView.image) withObject:[UIImage imageNamed:newImage] afterDelay:0.5];

Or do I have to create a new method to be a called to put the setting of the property in? The above seems so simple.

Answer 1

Yes the default name of the setter for a property named image will be setImage.

[imageView performSelector:@selector(setImage:) withObject:[UIImage imageNamed:newImage] afterDelay:0.5];

When you do not set the setter method it will generate a method prefixed with set then camel cased and it will accept a parameter of its type.

Ex.

@property(assign) id object;
//becomes
-(id)object {...} // getter
-(void)setObject:(id)inObject {...} //setter