我有一个带有ViewController的应用程序，它包含一个headerView，headerView只是一个应该容纳其他视图的容器 . headerView中的视图是我想在运行时用动画替换的视图 . 我希望oldView（这是headerView的旧内容）向左滑动，newView从右侧滑入 . 我已经包含了下面的代码和日志 . newView动画中的幻灯片有效，但oldView始终滑动到（0,0）坐标，而不是（-headerView.bounds.size.width，0）坐标 . 这种动画是不可能的，还是不是为这种动画制作的UIView animateWithDuration？非常感谢 .
代码：
//put the frame at the right side of out bounds (to slide in)
[newView setFrame:CGRectMake(newView.frame.origin.x + newView.frame.size.width, newView.frame.origin.y, newView.frame.size.width, newView.frame.size.height)];
NSLog(@"Oldview bounds before transition: %f - %f - %f - %f", oldView.frame.origin.x, oldView.frame.origin.y, oldView.frame.size.width, oldView.frame.size.height);
[UIView animateWithDuration:1.0 animations:^{
//put it in the correct position (slide in from right to left)
[newView setFrame:CGRectMake(0, 0, self.headerView.frame.size.width, self.headerView.frame.size.height)];
//Slide the old view out of the view to the left
[oldView setFrame:CGRectMake(-self.headerView.bounds.size.width, 0, self.headerView.frame.size.width, self.headerView.frame.size.height)];
NSLog(@"Oldview bounds after transition: %f - %f - %f - %f", oldView.frame.origin.x, oldView.frame.origin.y, oldView.frame.size.width, oldView.frame.size.height);
} completion:^(BOOL fin){
//remove the old view from the headerview
[oldView removeFromSuperview];
}];
日志输出：
Oldview bounds before transition: 0.000000 - 0.000000 - 760.000000 - 400.000000
Oldview bounds after transition: -760.000000 - 0.000000 - 760.000000 - 400.000000
[解决方案]我的oldView包含通过设置保持视图就位的约束：
oldView.translatesAutoresizingMaskIntoConstraints = YES;
在动画解决问题之前 .