编辑 CollectionViewCell 的宽度
Editing the width of a CollectionViewCell
我正在尝试编辑单元格的宽度,这样无论屏幕尺寸如何,我都会有 score1.count
个单元格。我用于 Collection 视图的代码如下:
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.items.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! MyCollectionViewCell
cell.myLabel.text = String(self.items[indexPath.item])
return cell
}
这是针对单元格宽度的函数。
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout,sizeForItemAt indexPath: IndexPath) -> CGSize {
let size = Int(self.view.frame.size.width)/(score1.count + 1)
return CGSize(width: CGFloat(size), height: 80)
}
我花了很多时间查看不同的来源并尝试不同的方法,但 collection 视图的单元格数量始终不正确。一种想法是,这可能是因为我在自动布局中设置了单元格大小,但每当我去更改它时 xcode 崩溃。关于绕过自动布局的任何想法?或者如何更改自动布局?
谢谢!
您可以将 sizeForItemAtIndexPath 更改为。您可以在减去边距并按单元格数潜水后分配单元格的大小。
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout,sizeForItemAt indexPath: IndexPath) -> CGSize {
let size = (Int(collectionView.bounds.width) - (score1.count+1)*5) /(score1.count) // 5 is the margin you want to keep in between 2 cells
return CGSize(width: CGFloat(size), height: 80)
}
如果您有任何疑问,请告诉我。我会尽力澄清。
试试这个
extension YourViewController : UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let rowItems:CGFloat = 4
let padding:CGFloat = 2
let width = (collectionView.bounds.width / rowItems) - padding //Change width as per your requirement
let height = collectionView.bounds.height - (2 * padding)//Change height as per your requirement
return CGSize(width: width, height: height)
}
}
我正在尝试编辑单元格的宽度,这样无论屏幕尺寸如何,我都会有 score1.count
个单元格。我用于 Collection 视图的代码如下:
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.items.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! MyCollectionViewCell
cell.myLabel.text = String(self.items[indexPath.item])
return cell
}
这是针对单元格宽度的函数。
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout,sizeForItemAt indexPath: IndexPath) -> CGSize {
let size = Int(self.view.frame.size.width)/(score1.count + 1)
return CGSize(width: CGFloat(size), height: 80)
}
我花了很多时间查看不同的来源并尝试不同的方法,但 collection 视图的单元格数量始终不正确。一种想法是,这可能是因为我在自动布局中设置了单元格大小,但每当我去更改它时 xcode 崩溃。关于绕过自动布局的任何想法?或者如何更改自动布局?
谢谢!
您可以将 sizeForItemAtIndexPath 更改为。您可以在减去边距并按单元格数潜水后分配单元格的大小。
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout,sizeForItemAt indexPath: IndexPath) -> CGSize {
let size = (Int(collectionView.bounds.width) - (score1.count+1)*5) /(score1.count) // 5 is the margin you want to keep in between 2 cells
return CGSize(width: CGFloat(size), height: 80)
}
如果您有任何疑问,请告诉我。我会尽力澄清。
试试这个
extension YourViewController : UICollectionViewDelegateFlowLayout{
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let rowItems:CGFloat = 4
let padding:CGFloat = 2
let width = (collectionView.bounds.width / rowItems) - padding //Change width as per your requirement
let height = collectionView.bounds.height - (2 * padding)//Change height as per your requirement
return CGSize(width: width, height: height)
}
}