使用 kCATransitionMoveIn 在 UIView 中滑动时出现故障
我有一个 UINavigationController，当用户按下按钮时，其 UIView 会从屏幕底部滑入。
不过，在我将视图的“隐藏”属性设置为“否”后，UINavigationController 的视图有时会完全出现一帧，就好像动画已经完成一样。
这是显示/隐藏视图的代码：
- (void)showGUI: (bool)show
{
CATransition *transition = [CATransition animation];
transition.duration = 0.5;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
if (!show)
{
transition.type = kCATransitionReveal;
transition.subtype = kCATransitionFromBottom;
}
else
{
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
}
[navController.view.superview.layer addAnimation:transition forKey:nil];
navController.view.hidden = !show;
}
I have a UINavigationController whose UIView slides in from the bottom of the screen when the user presses a button.
Immediately after I set the view's "hidden" property to NO, though, the UINavigationController's view sometimes appears fully in place for one frame, as if the animation was finished already.
This is the code that shows/hides the view:
- (void)showGUI: (bool)show
{
CATransition *transition = [CATransition animation];
transition.duration = 0.5;
transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
if (!show)
{
transition.type = kCATransitionReveal;
transition.subtype = kCATransitionFromBottom;
}
else
{
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
}
[navController.view.superview.layer addAnimation:transition forKey:nil];
navController.view.hidden = !show;
}
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当向添加动画的图层添加/删除图层时，将应用 CATransition 动画。如果切换隐藏属性不起作用，请尝试删除视图。
CATransition animations are applied when layers are added/removed from the layer you add the animation to. If toggling the hidden property doesn't work, then try removing the view instead.