标签:io os for on ad ef as line size
//震动效果
- (void)shake:(UIView *)view
{
CGRect frame = view.frame;
CAKeyframeAnimation *shakeAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
CGMutablePathRef shakePath = CGPathCreateMutable();
CGPathMoveToPoint(shakePath, NULL, frame.origin.x+frame.size.width/2, frame.origin.y+frame.size.height/2);
int index;
for (index = 3; index >=0; --index)
{
CGPathAddLineToPoint(shakePath, NULL, frame.origin.x+frame.size.width/2 - frame.size.width * 0.02f * index, frame.origin.y+frame.size.height/2);
CGPathAddLineToPoint(shakePath, NULL, frame.origin.x+frame.size.width/2 + frame.size.width * 0.02f * index, frame.origin.y+frame.size.height/2);
}
CGPathCloseSubpath(shakePath);
shakeAnimation.path = shakePath;
shakeAnimation.duration = 0.5f;
shakeAnimation.removedOnCompletion = YES;
[view.layer addAnimation:shakeAnimation forKey:nil];
CFRelease(shakePath);
}
标签:io os for on ad ef as line size
原文地址:http://www.cnblogs.com/zhangliukou/p/4127100.html