Ios 自动换热器位置设置问题
我以前也发过类似的问题,但我觉得我没有得到正确的答案。基本上,我想将Ios 自动换热器位置设置问题,ios,objective-c,Ios,Objective C,我以前也发过类似的问题,但我觉得我没有得到正确的答案。基本上,我想将CAShapeLayer的位置更改为移动触摸时触摸的位置。我使用的代码如下所示。我的问题是,动画将工作,但它不会确切地在触摸的位置。取而代之的是,它将有近20个像素的距离。有办法解决这个问题吗 -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { NSSet *allTouches = [event allTouches]; UIto
CAShapeLayer
的位置更改为移动触摸时触摸的位置。我使用的代码如下所示。我的问题是,动画将工作,但它不会确切地在触摸的位置。取而代之的是,它将有近20个像素的距离。有办法解决这个问题吗
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSSet *allTouches = [event allTouches];
UItouch *touch = [alltouches objectAtIndex:0];
CGPoint currentPos = [myTouch locationInView: self];
layer = [self addCircleYellownWithRadius:8 withduration:5 X:currentPos.x Y:currentpos.y];
}
-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
NSSet *allTouches = [event allTouches];
UItouch *touch = [alltouches objectAtIndex:0];
CGPoint currentPos = [myTouch locationInView: self];
//set layer posotion to touch position
layer.position = CGPointMake(currentPos.x-8,currentPos.y-8);
}
-(CAShapeLayer *)addCircleYellownWithRadius:(float)radius5 withduration:(float)duration X:(float)x Y:(float)y{
int radius = (int)radius5;
CAShapeLayer *circle = [CAShapeLayer layer];
// Make a circular shape
circle.path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 2.0*radius, 2.0*radius)
cornerRadius:radius].CGPath;
// Center the shape in self.view
circle.position = CGPointMake(x-radius,
y-radius);
// Configure the apperence of the circle
circle.fillColor = [UIColor clearColor].CGColor;
circle.strokeColor = [UIColor whiteColor].CGColor;
circle.lineWidth = 5;
// Add to parent layer
[self.view.layer addSublayer:circle];
// Configure animation
CABasicAnimation *drawAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
drawAnimation.duration = duration; // "animate over 10 seconds or so.."
drawAnimation.repeatCount = 1.0; // Animate only once..
// Animate from no part of the stroke being drawn to the entire stroke being drawn
drawAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
drawAnimation.toValue = [NSNumber numberWithFloat:1.0f];
// Experiment with timing to get the appearence to look the way you want
drawAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];
// Add the animation to the circle
[circle addAnimation:drawAnimation forKey:@"drawCircleAnimation"];
CGRect oldFrame = circle.frame;
circle.anchorPoint = CGPointMake(0.5, 0.5);
circle.frame = oldFrame;
return circle;
}
不要转发问题。相反,您应该编辑原始问题,并在原始问题中添加更多信息,以便您可以在原始问题中获得一个好的答案