Three20 中 Button 抖动的代码

最新推荐文章于 2025-06-20 21:57:53 发布

iteye_309

最新推荐文章于 2025-06-20 21:57:53 发布

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本文介绍了一种使用UIView实现按钮摆动动画的方法。通过CGAffineTransform旋转矩阵来改变按钮的位置，达到摆动的效果，并利用UIView动画实现了动画过程。文章详细介绍了如何通过代码设置动画参数和动画结束后触发的操作。

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- (void)wobble {
static BOOL wobblesLeft = NO;

if (_editing) {
CGFloat rotation = (50 * M_PI) / 180.0;
CGAffineTransform wobbleLeft = CGAffineTransformMakeRotation(rotation);
CGAffineTransform wobbleRight = CGAffineTransformMakeRotation(-rotation);

[UIView beginAnimations:nil context:nil];

NSInteger i = 0;
NSInteger nWobblyButtons = 0;
for (NSArray* buttonPage in _buttons) {
for (TTLauncherButton* button in buttonPage) {
if (button != _dragButton) {
++nWobblyButtons;
if (i % 2) {
button.transform = wobblesLeft ? wobbleRight : wobbleLeft;

} else {
button.transform = wobblesLeft ? wobbleLeft : wobbleRight;
}
}
++i;
}
}

if (nWobblyButtons >= 1) {
[UIView setAnimationDuration:kWobbleTime];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(wobble)];
wobblesLeft = !wobblesLeft;

} else {
[NSObject cancelPreviousPerformRequestsWithTarget:self];
[self performSelector:@selector(wobble) withObject:nil afterDelay:kWobbleTime];
}

[UIView commitAnimations];
}
}