iphone - create - uiimageview set image swift

Animar UIImage giratorioVer

Question

Quiero rotar un UIImageView por aproximadamente 10 grados a la izquierda / derecha, pero tengo una animación suave, en lugar de un giro repentino que veo usando:

player.transform = CGAffineTransformMakeRotation(angle)

Cualquier ayuda apreciada, gracias.

Answer 1

Tengo un código que gira 360 grados:

 - (void) runSpinAnimationOnView:(UIView*)view duration:(CGFloat)duration rotations:(CGFloat)rotations repeat:(float)repeat;
{
CABasicAnimation* rotationAnimation;
rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat: rotations * 2.0 /* full rotation*/ * rotations * duration ];
rotationAnimation.duration = duration;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = repeat;
[view.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
}

llámalo: [self runSpinAnimationOnView:imgView duration:0.1 rotations:M_PI_4 repeat:10];

Y la animación gira algunos grados y otra vez:

 - (void)rotateImage:(UIImageView *)image duration:(NSTimeInterval)duration delay:(NSTimeInterval)delay
curve:(int)curve rotations:(CGFloat)rotations
{
[UIView animateWithDuration:duration
delay:delay
options:0
animations:^{
[UIView setAnimationCurve:curve];
image.transform = CGAffineTransformMakeRotation(rotations);
}
completion:^(BOOL finished){
[self rotateImage2:image duration:duration delay:delay curve:curve rotations:rotations];
;
}];
[UIView commitAnimations];
}
- (void)rotateImage2:(UIImageView *)image duration:(NSTimeInterval)duration delay:(NSTimeInterval)delay
curve:(int)curve rotations:(CGFloat)rotations
{
[UIView animateWithDuration:duration
delay:delay
options:0
animations:^{
[UIView setAnimationCurve:curve];
image.transform = CGAffineTransformMakeRotation(-rotations);
}
completion:^(BOOL finished){
[self rotateImage:image duration:duration delay:delay curve:curve rotations:rotations];
;
}];
[UIView commitAnimations];
}

Si desea rotar una vista de uiimage por aproximadamente 10 grados a la izquierda / derecha, llame: [self rotateImage:imgView duration:0.7 delay:0.0 curve:UIViewAnimationCurveEaseIn rotations:(M_PI/18)]; similar, algunos degres

Answer 2

Una solución Swift moderna, usando NSTimer y CGAffineTransformMakeRotation :

class Rotation: UIViewController {
var timer = NSTimer()
var rotAngle: CGFloat = 0.0
@IBOutlet weak var rotationImage: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
activateTimer()
}
func activateTimer() {
//(1)
timer = NSTimer.scheduledTimerWithTimeInterval(1.0, target:self, selector:#selector(Rotation.updateCounter), userInfo: nil, repeats: true)
}
func updateCounter() {
//(2)
var rotateLeft: Bool = true
if rotateLeft {
rotAngle -= 30.0
} else {
rotAngle += 30.0
}
//(3)
UIView.animateWithDuration(2.0, animations: {
self.rotationImage.transform = CGAffineTransformMakeRotation((self.rotAngle * CGFloat(M_PI)) / 180.0)
})
}
}

Cosas para notar:

• Conecte el tomacorriente el UIImageView

• Juega con el (1) ritmo del temporizador, (2) ritmo de animación y (3) ángulo de rotación para obtener los resultados deseados. Este conjunto de variables funcionó para mí.

Answer 3

Uso un código como este para lograr un efecto similar (aunque lo gire 360 ​​grados):

CABasicAnimation *rotate;
rotate = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotate.fromValue = [NSNumber numberWithFloat:0];
rotate.toValue = [NSNumber numberWithFloat:deg2rad(10)];
rotate.duration = 0.25;
rotate.repeatCount = 1;
[self.view.layer addAnimation:rotate forKey:@"10"];

Uso un código muy similar a esto para hacer girar una vista de imagen.

Answer 4

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.25]; // Set how long your animation goes for
[UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
player.transform = CGAffineTransformMakeRotation(angle); // if angle is in radians
// if you want to use degrees instead of radians add the following above your @implementation
// #define degreesToRadians(x)(x * M_PI / 180)
// and change the above code to: player.transform = CGAffineTransformMakeRotation(degreesToRadians(angle));
[UIView commitAnimations];
// The rotation code above will rotate your object to the angle and not rotate beyond that.
// If you want to rotate the object again but continue from the current angle, use this instead:
// player.transform = CGAffineTransformRotate(player.transform, degreesToRadians(angle));