Swift : Get Device properties in Simulator

DaveS · 19 September 2023 17:06

I recently had a need to query the device properties of various iPhone in the Simulator.
For those interested , here is the code (only 42 lines)

import UIKit

class ViewController: UIViewController {
    override var prefersStatusBarHidden: Bool { return false }
    override var preferredStatusBarStyle : UIStatusBarStyle { return .lightContent }
    override var supportedInterfaceOrientations: UIInterfaceOrientationMask { return .all }
    override var shouldAutorotate : Bool { return true }
    
    override func viewDidLoad() { super.viewDidLoad() }
    
    override func viewDidAppear(_ animated: Bool) {
        let w : CGFloat = UIScreen.main.bounds.size.width
        let h : CGFloat = UIScreen.main.bounds.size.height
        let newSafeArea = view.safeAreaInsets
        let device      = UIDevice().name
        let scale       = UIScreen.main.scale
        let r           = CGRect(x:newSafeArea.left,y:newSafeArea.top,width:w-newSafeArea.left-newSafeArea.right,height:h-newSafeArea.top-newSafeArea.bottom)

        if  isLandscape {
            print("    Landscape : \(device)")
        } else {
            print("     Portrait : \(device)");
        }
        print(" Logical Size : \(Int(w)) x \(Int(h))")
        print("Physical Size : \(Int(w*scale)) x \(Int(h*scale))")
        print("        Scale : @\(Int(scale))x")
        print("     SafeArea : ",terminator: "")
        print("[\(Int(r.minX)),",terminator: "")
        print("\(Int(r.minY)),",terminator: "")
        print("\(Int(r.width)),",terminator: "")
        print("\(Int(r.height))]")
    }
    private var windowScene: UIWindowScene? {
        return UIApplication.shared.connectedScenes.first as? UIWindowScene
    }
    var isLandscape: Bool {
        if #available(iOS 16.0, *) {
            return windowScene?.interfaceOrientation.isLandscape ?? false
        }
        return UIDevice.current.orientation.isLandscape
    }
}

Load this into Xcode, and select a iPhone/iPad device , run the code, the data will appear in the console window (I did this so I could copy it to other documents). Switch the orientation, and run it again.

Here is what a 3rd Gen IphoneSE reports

     Portrait : iPhone SE (3rd generation)
 Logical Size : 375 x 667
Physical Size : 750 x 1334
        Scale : @2x
     SafeArea : [0,20,375,647]

    Landscape : iPhone SE (3rd generation)
 Logical Size : 667 x 375
Physical Size : 1334 x 750
        Scale : @2x
     SafeArea : [0,0,667,375]

This works just fine with the new Xcode 15

I had tried to get it to do both orientations at the same time, but any code I found that was supposed to rotate the device programmticaly didn’t seem to work right… So if anyone has an idea, let me know

Torsten_B · 22 September 2023 10:36

In SwiftUI, GeometryReader provides some information:

import SwiftUI

struct ContentView: View {
    var body: some View {
        GeometryReader { geo in
            VStack {
                Text("Device screen width: \(geo.size.width)")
                Text("Device screen width: \(geo.size.height)")
                Text("Safe area inset top: \(geo.safeAreaInsets.top)")
                Text("Safe area inset bottom: \(geo.safeAreaInsets.bottom)")
                Text("Safe area inset leading: \(geo.safeAreaInsets.leading)")
                Text("Safe area inset trailing: \(geo.safeAreaInsets.trailing)")
            }
        }
    }
}

#Preview {
    ContentView()
}

Result in preview with option ‘Orientation Variants’: