Question

我想从上到下创建UIView动画方向，但是在我尝试了两天之后，我就已经投降了

这是我的代码

- (IBAction)goAction:(id)sender 
{
    primaryView.userInteractionEnabled = NO;

    [UIView animateWithDuration:0.3 animations:^{
        secondaryView.frame = CGRectMake(0, 100, secondaryView.frame.size.width, secondaryView.frame.size.height);

        CALayer *layer = primaryView.layer;
        layer.zPosition = -4000;
        CATransform3D rotationAndPerspectiveTransform = CATransform3DIdentity;
        rotationAndPerspectiveTransform.m21 = 1.0 / -300;
        layer.transform = CATransform3DRotate(rotationAndPerspectiveTransform, 10.0f * M_PI / 180.0f, 1.0f, 0.0f, 0.0f);            
        primaryShadeView.alpha = 0.35;
    } completion:^(BOOL finished) {
        [UIView animateWithDuration:0.3 animations:^{
            primaryView.transform = CGAffineTransformMakeScale(0.9,0.9);
            primaryShadeView.alpha = 0.5;
        }];
    }];
}

这个方向......自下而上......希望你们都能帮助我:)。

Answer 1

最初将视图分配到一个位置，使其落在导航栏上方。

CGRectMake(0, 100, secondaryView.frame.size.width, secondaryView.frame.size.height);

此处将值100更改为足以隐藏已分配视图的负值。在使用动画显示时，使用相同的CGRectMake参数，仅更改“y”，给出位置以在屏幕上显示。在nNext上单击以相同方式隐藏它。

这有意义吗？

以下是样本：

在您的按钮操作中：

{
    if(!youNewView)
    {
        youNewView = [[UIView alloc] initWithFrame:CGRectMake(self.view.frame.size.width, -220(depends on your view height), 320, 300) ];
      //add additional properties you need to add here
        [self.View addSubview:youNewView];
    }

     [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:newView cache:YES];
     [UIView commitAnimations];

else
{
    [UIView animateWithDuration:.5 animations:^{
        newView.frame = CGRectMake(newView.frame.origin.x, -210, myPicker.frame.size.width, newView.frame.size.height);
    } completion:^(BOOL finished) {
        [newView removeFromSuperview];
    }];
}

Answer 2

    [UIView animateWithDuration:0.5 animations:^{
    self.view.frame = CGRectMake(self.view.frame.origin.x,
                                              self.view.frame.size.height,
                                              self.view.frame.size.width,
                                              self.view.frame.size.height);
    [self.view layoutIfNeeded];
}];

请试试这个，这对我有用。

UIVIEW从上到下转换

2 个答案: