Animation Direction on iOS [closed] - ios

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I know everything about animation Tools in iOS.
Rotation, Scaling and Moving but I have made a bad timing
for example I have two Squares one on the Left and the Other on the Right
and i want the two squares two rotates until they hit each other with Angle
but i fail to make it because of bad timing
so my Question is their a god tutorial illustrate it

Answer 1

Maybe you can have a look on this link. As Your Tags suggest that you´re using CoreAnimation for that, you can chain your animations.
You could have a fixed moving horizontal and a nested animation with the same duration for rotating. Thats how i do such tasks.
UPDATE:
Here is some code which works perfectly for me:
- (void)viewDidLoad {
[super viewDidLoad];
UIView *leftView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 70.0, 30.0, 30.0)];
leftView.backgroundColor = [UIColor redColor];
[self.view addSubview:leftView];
UIView *rightView = [[UIView alloc] initWithFrame:CGRectMake(self.view.frame.size.width, 50.0, 50.0, 50.0)];
rightView.backgroundColor = [UIColor blueColor];
[self.view addSubview:rightView];
[self moveViewLeft:leftView];
[self moveViewRight:rightView];
}
- (void)moveViewLeft:(UIView *)view {
float duration = 1.0;
// Moving
CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:#"position"];
moveAnimation.fromValue=[NSValue valueWithCGPoint:CGPointMake([view center].x, [view center].y)];
moveAnimation.toValue=[NSValue valueWithCGPoint:CGPointMake([view center].x+self.view.frame.size.width/2-view.frame.size.width, [view center].y)];
moveAnimation.duration = duration;
moveAnimation.speed = 1.0;
moveAnimation.fillMode = kCAFillModeForwards;
moveAnimation.removedOnCompletion = NO;
// Rotation
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:#"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat: ((360*M_PI)/180)];
rotationAnimation.duration = duration+0.5;
rotationAnimation.speed = 1.5;
rotationAnimation.fillMode = kCAFillModeForwards;
rotationAnimation.removedOnCompletion = NO;
// Combining Animations
CAAnimationGroup *anim = [CAAnimationGroup animation];
anim.animations = [NSArray arrayWithObjects:moveAnimation, rotationAnimation, nil];
anim.duration = duration;
anim.fillMode = kCAFillModeForwards;
anim.removedOnCompletion = NO;
[view.layer addAnimation:anim forKey:nil];
}
- (void)moveViewRight:(UIView *)view {
float duration = 1.0;
// Moving
CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:#"position"];
moveAnimation.fromValue=[NSValue valueWithCGPoint:CGPointMake([view center].x, [view center].y)];
moveAnimation.toValue=[NSValue valueWithCGPoint:CGPointMake([view center].x-self.view.frame.size.width/2, [view center].y)];
moveAnimation.duration = duration;
moveAnimation.speed = 1.0;
moveAnimation.fillMode = kCAFillModeForwards;
moveAnimation.removedOnCompletion = NO;
// Rotation
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:#"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat: ((360*M_PI)/180)];
rotationAnimation.duration = duration+5;
rotationAnimation.speed = 1.5;
rotationAnimation.fillMode = kCAFillModeForwards;
rotationAnimation.removedOnCompletion = NO;
// Combining Animations
CAAnimationGroup *anim = [CAAnimationGroup animation];
anim.animations = [NSArray arrayWithObjects:moveAnimation, rotationAnimation, nil];
anim.duration = duration;
anim.fillMode = kCAFillModeForwards;
anim.removedOnCompletion = NO;
[view.layer addAnimation:anim forKey:nil];
}
Update 2:
I've changed the duration of the rotation and the speed. Now it looks like your example animation. Both squares are fitting now to each other.
Update 3:
As you say, that you have timing problems, following guide helped me for this:
The duration of the rotation should be equal to the speed.
The duration and the speed should be 150% of the duration and speed of the moving animation.

Answer 2

Are you implementing UICollisionBehavior? If so, try to disable it.