移动时旋转 imageView [英] rotate an imageView While moving it
本文介绍了移动时旋转 imageView的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
所以我有一个名为 image 的 UIView
,我试图让它在我上下移动视图时旋转,这是我到目前为止所做的,但它使图片旋转而不向下:
So I have an UIView
called image, and i am trying to get it to rotate while i am moving the view up and down,here is what I've done so far,but it makes the picture rotate and not go down:
{
return centerY - height / 2 <= 10 ||
centerY + height/ 2 >= self.view.bounds.size.height - 10;
}
-(void)moveUpDownTimerCallback
{
[UIView commitAnimations];
verticalSpeed += acceleration;
degrees+=degreechange;
CGSize sz = image.bounds.size;
image.transform = CGAffineTransformMakeRotation(degrees * M_PI/180),image.layer.anchorPoint =
CGPointMake(rotPointx/sz.width,rotPointy/sz.height);rotPointy = image.center.y;
rotPointx = image.center.x;
CGPoint newCenter = CGPointMake(image.center.x, image.center.y + verticalSpeed);
if ([self hasCollided: image.center.y + verticalSpeed imageHeight:
image.bounds.size.height]) {
acceleration = 0;
[self moveUpDown: 0];
}
else {
image.center = newCenter;
}
}
-(void)moveUpDown:(int) vSpeed
{
verticalSpeed = vSpeed;
if (verticalSpeed != 0 || acceleration != 0) {
if (timer == nil)
timer =[NSTimer scheduledTimerWithTimeInterval:0.05
target:self
selector:@selector(moveUpDownTimerCallback)
userInfo:nil
repeats:YES];
}
}
else {
if (timer != nil) {
[timer invalidate];
timer = nil;
}
}
}
任何帮助将不胜感激(:
any help would be much appreciated (:
推荐答案
尝试用这个方法旋转 imageview
try rotating imageview with this method
CABasicAnimation* animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
animation.fromValue = @0.0f;
animation.toValue = @(2*M_PI);
animation.duration = 1.0f; // this might be too fast
animation.repeatCount = HUGE_VALF; // HUGE_VALF is defined in math.h so import it
[self.imageview1.layer addAnimation:animation forKey:@"rotation"];
并使用此方法移动视图
CGRect frameBottomview1 = self.yourview.frame;
frameBottomview1.origin.y = 300;
[UIView animateWithDuration:0.7 delay:0.0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
[self.yourview setFrame:frameBottomview1 ];
} completion:nil];
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