Question

请参阅：Dual Container View Animation iOS，了解我的观点以及我正在尝试做的详细信息。

基本上，它是两个动画的容器视图。在上面描述的主题中，我正在为框架设置动画，我发现这些框架存在问题。

我现在开始设置约束和框架的动画，但是

1）我不确定我所做的事情是否正确。 2）当我旋转设备然后将其旋转回来时，动画视图会向后移动。

如何在激活自动旋转时阻止我的动画视图消失？提前致谢。

我的隐藏/显示代码：

 func hideBanner() {
    guard isBannerShowing == true else { return }

    self.isBannerShowing = false
    let adjustment = self.cancelApplyView.frame.size.height

    let tableViewFrame = tableContainerView.frame
    let newTableViewFrame = CGRect(x: tableViewFrame.origin.x, y: tableViewFrame.origin.y, width: tableViewFrame.size.width, height: tableViewFrame.height + adjustment)
    let cancelApplyFrame = cancelApplyView.frame
    let newCancelApplyFrame = CGRect(x: cancelApplyFrame.origin.x, y: cancelApplyFrame.origin.y + adjustment, width: cancelApplyFrame.size.width, height: cancelApplyFrame.height)

    self.view.updateConstraints()
    UIView.animate(withDuration: 0.5, animations: {
        self.tableContainerBottomConstraint.constant = 0
        self.view.layoutIfNeeded()
        self.tableContainerView.frame = newTableViewFrame
        self.cancelApplyView.frame = newCancelApplyFrame
    })
}
func showBanner() {
    guard isBannerShowing == false else { return }

    self.isBannerShowing = true
    let adjustment = self.cancelApplyView.frame.size.height

    let newConstraintVal = cancelApplyView.frame.size.height

    let tableViewFrame = tableContainerView.frame
    let newTableViewFrame = CGRect(x: tableViewFrame.origin.x, y: tableViewFrame.origin.y, width: tableViewFrame.size.width, height: tableViewFrame.height - adjustment)
    let cancelApplyFrame = cancelApplyView.frame
    let newCancelApplyFrame = CGRect(x: cancelApplyFrame.origin.x, y: cancelApplyFrame.origin.y - adjustment, width: cancelApplyFrame.size.width, height: cancelApplyFrame.height)

    self.view.bringSubview(toFront: self.cancelApplyView)
    self.view.updateConstraints()

    UIView.animate(withDuration: 0.5, animations: {
        self.tableContainerBottomConstraint.constant = newConstraintVal
        self.view.layoutIfNeeded()
        self.tableContainerView.frame = newTableViewFrame
        self.cancelApplyView.frame = newCancelApplyFrame
    })

}

Answer 1

实际上，您不必同时进行自动/帧布局更改

将横幅顶部约束挂钩到桌面并使横幅底部= view.bottom + bannerHeight

隐藏

    self.bannerTopConstraint.constant = -1* bannerHeight
    self.cancelApplyViewTopConstraint.constant = 0
    UIView.animate(withDuration: 0.5, animations: {        
    self.view.layoutIfNeeded()         
    })

显示

    self.bannerTopConstraint.constant = 0
    self.cancelApplyViewTopConstraint.constant = -1 * adjustment 
    UIView.animate(withDuration: 0.5, animations: {        
    self.view.layoutIfNeeded()         
    })

自动旋转后iOS动画视图消失

1 个答案: