如何在 iPhone 的 list(tableView) 和 iPad 的 grid(collectionView) 上显示数据

Question

I have a code assessment and never think about to something like this; I have to display the data retrieved from an API in two different layouts :

• For iPad; only in landscape mode and in a grid. I will do it with a UIcollectionView

• For iPhone; only in portrait mode and in a list. I will do it with a UItableView or StackView.

The problem is how to implement the logic that populates the collection view or the table view from the view controller. I think I have to use the UITraitCollection but I know if its the better option.

Someone can help me? Thanks

Answer 1

You can get the device from this method

// 1. request an UITraitCollection instance

  let deviceIdiom = UIScreen.main.traitCollection.userInterfaceIdiom

// 2. check the idiom

  switch (deviceIdiom) {

 case .pad:
    print("iPad style UI")
 case .phone:
    print("iPhone and iPod touch style UI")
 case .tv: 
   print("tvOS style UI")
 default:
    print("Unspecified UI idiom")
}

And For Orientation use this method:-

struct Orientation {
// indicate current device is in the LandScape orientation
  static var isLandscape: Bool {
    get {
        return UIDevice.current.orientation.isValidInterfaceOrientation
            ? UIDevice.current.orientation.isLandscape
            : UIApplication.shared.statusBarOrientation.isLandscape
    }
  }
// indicate current device is in the Portrait orientation
  static var isPortrait: Bool {
    get {
        return UIDevice.current.orientation.isValidInterfaceOrientation
            ? UIDevice.current.orientation.isPortrait
            : UIApplication.shared.statusBarOrientation.isPortrait
      }
   }
}