iPhone shine animation

Question

I\'m trying to get my view to do a nice shining animation to catch the user\'s eyes. Any ideas how to implement this?

Here\'s what I have so far:

[UIView         


        

Answer 1

I wrote a method that can be called on any UIView to give it the shine you are looking for without needing to include an image:

-(void)AddShineAnimationToView:(UIView*)aView
{
    CAGradientLayer *gradient = [CAGradientLayer layer];
    [gradient setStartPoint:CGPointMake(0, 0)];
    [gradient setEndPoint:CGPointMake(1, 0)];
    gradient.frame = CGRectMake(0, 0, aView.bounds.size.width*3, aView.bounds.size.height);
    float lowerAlpha = 0.78;
    gradient.colors = [NSArray arrayWithObjects:
                       (id)[[UIColor colorWithWhite:1 alpha:lowerAlpha] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:lowerAlpha] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:1.0] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:1.0] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:1.0] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:lowerAlpha] CGColor],
                       (id)[[UIColor colorWithWhite:1 alpha:lowerAlpha] CGColor],
                       nil];
    gradient.locations = [NSArray arrayWithObjects:
                          [NSNumber numberWithFloat:0.0],
                          [NSNumber numberWithFloat:0.4],
                          [NSNumber numberWithFloat:0.45],
                          [NSNumber numberWithFloat:0.5],
                          [NSNumber numberWithFloat:0.55],
                          [NSNumber numberWithFloat:0.6],
                          [NSNumber numberWithFloat:1.0],
                          nil];

    CABasicAnimation *theAnimation;
    theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
    theAnimation.duration = 2;
    theAnimation.repeatCount = INFINITY;
    theAnimation.autoreverses = NO;
    theAnimation.removedOnCompletion = NO;
    theAnimation.fillMode = kCAFillModeForwards;
    theAnimation.fromValue=[NSNumber numberWithFloat:-aView.frame.size.width*2];
    theAnimation.toValue=[NSNumber numberWithFloat:0];
    [gradient addAnimation:theAnimation forKey:@"animateLayer"];

    aView.layer.mask = gradient;
}