UIView transitionFromView更改视图高度

Question

我使用此代码在2之间进行更改UIView:

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;
}];

而且我注意到一种奇怪的行为,当我将翻转的高度调整为self.playerView20px并且在一秒之后,它会增加回到正常的帧大小.

我尝试更改animationType为UIViewAnimationOptionLayoutSubviews,现在当我在视图之间切换时,不会发生此行为.知道可能是什么问题吗？

Answer 1

请试试这段代码.

        [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];

获得反向案件

    [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];