Question

I have a thread which performs some tasks.

At the end I want to run a selector to hide an image with animation.

[self performSelectorOnMainThread:@selector(finishUpdate) withObject:nil waitUntilDone:YES];

I am setting the duration to 10 seconds:

- (void) finishUpdate {

    UIImageView *myImage = (UIImageView *)[self.view viewWithTag:788];

    CGContextRef context = UIGraphicsGetCurrentContext();
    [UIView beginAnimations:nil context:context];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
    [UIView setAnimationDuration:10.0f];
    myImage.frame = CGRectMake(0, 200, 320, 80);
    myImage.alpha = 0.0f;
    [UIView commitAnimations];
}

But it is disappearing instantly and the thread continues immediately.

Do you know how to make my thread to wait or how to display this simple animation?

Answer 1

Instead of waiting for the selector to finish, I used sleepForTimeInterval: method to pause my thread, using the same duration as my animation.

[NSThread sleepForTimeInterval:0.3];