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上我需要重新繪製繪製圓多於一個的動畫,我用這個代碼進行動畫的描繪刪除或重新加進CABasicAnimation uivew層
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(CGRectGetMidX(_DrawingView.frame)-radius,
CGRectGetMidY(_DrawingView.frame)-radius-0.66*radius);
// Configure the apperence of the circle
circle.fillColor = [UIColor clearColor].CGColor;
circle.strokeColor = [UIColor redColor].CGColor;
circle.lineWidth = 15;
// Add to parent layer
[_DrawingView.layer addSublayer:circle];
// Configure animation
CABasicAnimation *drawAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
drawAnimation.duration = 10.0; // "animate over 10 seconds or so.."
drawAnimation.repeatCount = 1.0; // Animate only once..
drawAnimation.removedOnCompletion = NO; // Remain stroked after the animation..
// 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"];
我需要刪除動畫再次重繪它,我試過這種
[_DrawingView.layer removeAnimationForKey:@"drawCircleAnimation"];
,但沒有奏效,所以我怎麼能刪除該層的動畫?
,設置repeatcount到該號碼,而不是1 –
我想再說一遍當完成 –
後,按鈕不會自動按下,然後將此代碼寫入單擊按鈕時調用的方法中。 –