CODEWITHSUNDEEP
iosxcodesize-classes
xskit
xskit

Reputation: 431

iOS different constraints for different devices

I have a ViewController designed for iPhone SE

enter image description here

As you can see I also have a constraint Align Top to: Safe Area Equals 75

The question is, is it possible to change this value for iPhone 8 and iPhone 8 Plus? For example:

Upvotes: 18

Views: 13577

Answers (4)

Kuldeep Tanwar
Kuldeep Tanwar

Reputation: 3526

Easy way!

To overcome this issue I created a small library so you don't have to write a single line of code just assign the class (NSLayoutHelper) to your constraint and you'll be able to update your constraint for all the devices differently.

enter image description here

For updating constraints

enter image description here

Output

enter image description here

Upvotes: 23

Jakub Průša
Jakub Průša

Reputation: 2405

we were facing similar issue. We solved with helper class called scaled. Which basically just multiply size of something, which should appear larger on larger device.

extension CGFloat {
    public var scaled: CGFloat {
        switch UIDevice.type.getResolutionGroup()! {
        case .lr320x568:
            return self
        case .lr375x667:
            return self * 1.1
        case .lr414x736:
            return self * 1.2
        case .lr768x1024:
            return self * 1.3
        // For iPads
        case .lr1024x1366:
            return self * 1.3
        }
    }
}

And implementation of resolution group

public func getResolutionGroup() -> ResolutionGroup? {
        switch self {
        case .iPhone5, .iPhone5C, .iPhone5S, .iPhoneSE, .iPodTouch5, .iPodTouch6:
            return .lr320x568
        case .iPhone6, .iPhone6S, .iPhone7:
            return .lr375x667
        case .iPhone6Plus, .iPhone6SPlus, .iPhone7Plus:
            return .lr414x736
        case .iPadMini, .iPadMini2, .iPadMini3, .iPadMini4:
            return .lr768x1024
        case .iPad2, .iPad3, .iPad4, .iPadAir, .iPadAir2:
            return .lr768x1024
        case .iPadPro:
            return .lr1024x1366
        case .simulator:
            return isiPhone() ? .lr320x568 : .lr768x1024
        default:
            return .lr320x568
        }
    }

And usage in app

fileprivate let footerHeight = CGFloat(180).scaled

Upvotes: 10

Shehata Gamal
Shehata Gamal

Reputation: 100503

This is not applicanle in IB , you can try in code by hooking the top constraint of the view as IBOutlet and in viewDidLayoutSubviews

override func viewDidLayoutSubviews()
{

   if(deviceWidthSE)
   {      
      self.viewTopCon.constant = 75
   }
   else
   if(deviceWidth8)
   {
      self.viewTopCon.constant = 85
   }
   else
   if(deviceWidth8Plus)
   {
      self.viewTopCon.constant = 105
   }

}

Upvotes: 2

rodskagg
rodskagg

Reputation: 3927

Not using Interface Builder, no. Constraints, can only target Compact, Regular or Any sizes and all iPhone models have Compact width and Regular height when in portrait mode.

If you want that kind of granularity, you have to do it with code instead.

Upvotes: 9

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