how to add time duration when doing flip using CATransform3DRotate - objective-c

Question

Thanks for the help from my first post at here so that I can do a vertical flip and the code looks like
#interface ViewController (){
CALayer *plane;
}
#end
#implementation ViewController
-(void)viewDidLoad
{
[super viewDidLoad];
[self addALayer];
}
- (void)addALayer{
plane = [CALayer layer];
plane.backgroundColor = [[UIColor orangeColor] CGColor];
//[plane insertSublayer:normalBackground atIndex:0];
plane.opacity = 1;
plane.frame = CGRectMake(0, 0, 300, 100);
plane.position = CGPointMake(250, 150);
plane.anchorPoint = CGPointMake(0.5, 0.5);
plane.borderColor = [UIColor whiteColor].CGColor;
plane.borderWidth = 3;
plane.cornerRadius = 10;
[self.view.layer addSublayer:plane];
}
- (IBAction)click:(id)sender {
BOOL isClicked = ((UIButton*)sender).selected;
((UIButton*)sender).selected = !((UIButton*)sender).selected;
CATransform3D transfrom = CATransform3DIdentity;
transfrom.m34 = -1.0/ 500;
if ( !isClicked ) {
transfrom = CATransform3DRotate(transfrom, degToRad(180.0), 1, 0, 0);
plane.transform = transfrom;
}
else
plane.transform = transfrom;
}
My question is how can do this flip with animation. I did try to use
UIView animateWithDuration(NSTimeInterval) delay:(NSTimeInterval) options:(UIViewAnimationOptions) animations:^(void)animations completion:(BOOL finished)completion
but still does not work. I'm not so sure that animation block is a good idea for this animation.
Do you guys have any ideas about this.

Answer 1

Use a CATransaction to change the implicit defaults
[CATransaction begin];
[CATransaction setAnimationDuration:1]; // in seconds
// Change layer animatable properties
plane.transform = transform;
[CATransaction commit];