我在.xib文件中有一个UIImageView,当用户选择Collection View单元格时,需要更改其大小。 .xib文件被加载到视图控制器中,并具有连接两者的IBOutlet。我目前的方法与UIView配合得很好,但是UIImageView失败了。
代码仅在第一次加载屏幕时失败。如果用户选择任何Collection View单元格,UIImageView就会更新。
func displayDataForCell(index: Int) {
// Set the box fill amount for Anode, Feeder, and Wave
let anodePercentAmount = Double(pot.anode!)/100
let feederPercentAmount = Double(pot.feeder!)/100
let wavePercentAmount = Double(pot.wave!)/100
dataView.anodeBoxFill.frame = CGRect(x: 0.0, y: 180.0, width: 120.0, height: 0.0)
dataView.waveBoxFill.frame = CGRect(x: 0.0, y: 180.0, width: 120.0, height: 0.0)
dataView.feederBoxFill.frame = CGRect(x: 0.0, y: 180.0, width: 120.0, height: 0.0)
UIView.animateWithDuration(0.5, animations: { () -> Void in
self.dataView.anodeBoxFill.frame = CGRect(x: 0.0, y: (180.0 - (180.0*anodePercentAmount)), width: 120.0, height: (180.0*anodePercentAmount))
self.dataView.feederBoxFill.frame = CGRect(x: 0.0, y: (180.0 - (180.0*feederPercentAmount)), width: 120.0, height: (180.0*feederPercentAmount))
self.dataView.waveBoxFill.frame = CGRect(x: 0.0, y: (180.0 - (180.0*wavePercentAmount)), width: 120.0, height: (180.0*wavePercentAmount))
})
}
我在函数collectionView(_, didSelectItemAtIndexPath indexPath:_)
方法中调用上述方法如下:
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
// This makes sure only one cell can be selected at once
if currentPotIndex != indexPath.row {
let cell = collectionView.cellForItemAtIndexPath(indexPath)
cell?.highlighted
let cell0 = collectionView.cellForItemAtIndexPath(NSIndexPath(forItem: currentPotIndex, inSection: 0))
cell0?.highlighted = false
}
self.currentPotIndex = indexPath.row
displayDataForCell(currentPotIndex)
bottomCollection.reloadData()
}
最后,这是我目前尝试的解决方案:在didSelectItemAtIndexPath
函数中包含viewDidLoad()
函数调用。
//Initialize the view with the 0th indexed pot's data
collectionView(collectionView, didSelectItemAtIndexPath: NSIndexPath(forItem: currentPotIndex, inSection: 0))
self.dataView.layoutIfNeeded()
我会附上图片,但我没有足够的代表。 谢谢你的期待!
答案 0 :(得分:0)
这是我为解决问题所做的工作:
覆盖了函数viewDidAppear(animated: Bool)
并将动画UIImageViews的行为放入此函数中。我猜这是有效的,因为无限制的图像是在功能之后加载的,这些功能在超视图中解决了它们的大小和位置。