ios - UIView transitionFromView 改变 View 高度

Question

我正在使用这段代码在 2 个 UIView 之间切换:

UIViewAnimationOptions animationType = UIViewAnimationOptionTransitionFlipFromLeft;

[UIView transitionFromView:self.playlistTableView toView:self.playerView duration:0.5 options:animationType completion:^(BOOL finished){
     [self.containerView sendSubviewToBack:self.upperView];
     [self.containerView sendSubviewToBack:self.playerView];

     self.isPlaylistVisible = !self.isPlaylistVisible;
     isControlsHidden = NO;
}];

我注意到一个奇怪的行为，当我翻转时 self.playerView 的高度松动 20px，一秒钟后它又增加回正常的帧大小。

我尝试将 animationType 更改为 UIViewAnimationOptionLayoutSubviews，现在当我在 View 之间更改时，不会发生此行为。知道可能是什么问题吗？

Answer 1

请尝试此代码。

        [self.upperView setHidden:YES];
        [self.playerView setHidden:NO];
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:1.0];
        [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:containerView cache:YES];
        [UIView setAnimationDuration:1.0];
        [UIView commitAnimations];
        [containerView addSubview:self.playerView];

获取反向大小写

    [self.upperView setHidden:NO];
    [self.playerView setHidden:YES];
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:1.0];
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:containerView cache:YES];
    [UIView setAnimationDuration:1.0];
    [UIView commitAnimations];
    [containerView addSubview:self.upperView];