Swift Question
Adjust cellsize for fit all screens?
I'm trying to fit my app to all screensize, however I can't figure out how to. Is it possible to resize the cell depending on the screen? At the moment I just configure my UICollectionView as followed:
func numberOfSections(in collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of items
return fields.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath) as! FieldDistributionCollectionViewCell
cell.frame.size = CGSize(width: ?, height: ?)
return cell
}
Is there a recommended way? Or do I need to determine the version of the phone and set the size manually? On the smaller screen (4, 4s) I only want 2 columns, but 3 columns on the (5, 5s, 6, 6s). I basically just want the cell size to fit the right resolution.
Answer
Try this Code:
Implement the following functions from collectionView's protocol:
// cell size
func collectionView(collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
// To get 2 column
return CGSize(width: view.frame.size.width/2, height: view.frame.size.width/2)
// To get 3 column
// return CGSize(width: view.frame.size.width/3, height: view.frame.size.width/3)
// Toget 4 column
// return CGSize(width: view.frame.size.width/4, height: view.frame.size.width/4)
}
...where view is your controller's (super) view
// inter-spacing
func collectionView(collectionView: UICollectionView,
layout collectionViewLayout: UICollectionViewLayout,
minimumInteritemSpacingForSectionAtIndex section: Int) -> CGFloat {
return 2.0
}
func collectionView(collectionView: UICollectionView, layout
collectionViewLayout: UICollectionViewLayout,
minimumLineSpacingForSectionAtIndex section: Int) -> CGFloat {
return 2.0
}
Source (Stackoverflow)