我正在做我的第一个自定义segue动画.我想要的是一个列表视图,当我选择一行时,它不是从侧面滑入,而是从所选行扩展到位.就像是：
因此,用户选择绿色行,这将导致新控制器以绿色行大小开始并展开以填充屏幕.到目前为止,这部分工作正常.
我遇到的问题是解开segue,试图做相反的事情,将整个屏幕收缩回原来的行,然后解散.它会变得很好,但是暴露的区域仍然是黑色,然后在动画完成时突然闪烁到位.想要的是这样的：
但是发生的事情更像是这样的：
class FromScheduleFocusSegue: UIStoryboardSegue {
override func perform() {
let fromView = self.source.view!
let toView = self.destination.view!
let window = UIApplication.shared.keyWindow!
let schedulesList = self.destination as! SchedulesListController
let cell = schedulesList.tableView.cellForRow(at: schedulesList.tableView.indexPathForSelectedRow!)!
var stripe = cell.bounds
stripe.size.height = 60
let targetFrame = cell.convert(stripe,to: window).insetBy(dx: 0,dy: 0)
schedulesList.tableView.selectRow(at: nil,animated: false,scrollPosition: .none)
UIView.animateWithDuration(4000.milliseconds,delay: 0.seconds,options: .curveEaseInOut,animations: {
fromView.frame = targetFrame
}) { (finished) in
self.source.dismiss(animated: false,completion: nil)
}
}
}
所以基本上,当动画发生时,我如何获得我正在展开的视图？
为了完整起见,这里是前向segue代码：
class ToScheduleFocusSegue: UIStoryboardSegue {
override func perform() {
let fromView = self.source.view!
let toView = self.destination.view!
let window = UIApplication.shared.keyWindow!
let Box = UIScreen.main.bounds
let schedulesList = self.source as! SchedulesListController
let cell = schedulesList.tableView.cellForRow(at: schedulesList.tableView.indexPathForSelectedRow!)!
toView.frame = cell.convert(cell.bounds,dy: 0)
window.insertSubview(toView,aboveSubview: fromView)
UIView.animateWithDuration(4000.milliseconds,animations: {
toView.frame = Box
}) { (finished) in
self.source.present(self.destination,completion: nil)
}
}
}
(这是在XCode8中,使用Swift3针对iOS10)
解决方法
尝试让执行演示的视图控制器也执行解散.
所以在你放松的时候：
UIView.animateWithDuration(4000.milliseconds,animations: {
fromView.frame = targetFrame
}) { (finished) in
self.destination.dismiss(animated: false,completion: nil) // the destination is the one that presented the current view
}
