Question

I am using Xcode to create a Cocoa app for Mac OSX written in Objective-C. I was wondering if I could use an NSTimer to make a label Smoothly disappear after a certain time after I have clicked a button.

Or I thought I could use this code:

- (IBAction)clickToLoadAppButtonClicked:(id)sender; {

[self performSelector:@selector(delayedLoad) withObject:nil afterDelay:3.0]

}

All I would need to do would be to add a void function called delayedLoad. I just need to know the code to make the label smoothly disappear so I can put it in the void…

Please help and thanks guys 😀

Answer 1

You can do it using core animation:

[[myLabel animator] setAlphaValue:0.0];

This animates to transparent over a default period of 0.25 seconds.

See here for some further explanation or here for the full docs.