Popover examples on iPhone

Here you can find 2 examples of "popover" presentation on iPhone

Table of Contents

1. About The Project
   • Built With
2. Usage
3. Code example n°1
   • Step 1
   • Step 2
   • Step 3
4. Code example n°2
   • Step 1
   • Step 2
5. Contributing
6. Contact

About The Project

The project's idea was born while I was learning how to do a modal view in SwiftUI implementing UIKit. I was simply curious on the popover feature; so I did some research about it. I discovered that this type of view presentation is available only on iPad for some HIG (Human Interface Guidelines) reason. I know that we have all follow this simply rules and if there's a rule of what features we can use and where we can use them, we have to follow them.. but it's kind fun to be curious in life, no?

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Built With

• SwiftUI

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Usage

This project contains two very different example; they're very different also in the hypothetical usage you could imagine for them.

• 1: The first one is just a variant of view presentation (like in the project the datepicker, but also many others).

• 2: The second one I know that is VERY borderline regarding the HIG, but maybe this type of popover could be usable anyway respecting the HIG.

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Code example 1

Step 1

extension View{
		func toolBarPopover<Content: View>(show: Binding<Bool>,placement: Placement = .leading,
                                       @ViewBuilder content: @escaping ()->Content)->some View{
                               self
                                     (...)
                                          if show.wrappedValue{...}

Let’s create a viewbuilder function where we create the view’s container we want to present.

Step 2

@State var show = false
NavigationView{
...
}.toolbar{
    ToolbarItem(placement: ."..."){
          Button {
                  withAnimation{
                      show.toggle()
                  }
              } label: {
                  Image(systemName: "...")
                      .foregroundColor(."...")
              }
          }
      }
  }.toolBarPopover(show: $show, placement: ."..."){

Here it comes the core part, very important as very easy: just place “.toolBarPopover” at the end of the NavigationView and give the classic present binding (like modal view) to a button

Step 3

struct Ex1ArrowShape: Shape{
  var placement: Placement
  func path(in rect: CGRect) -> Path {
  return Path { path in
  let pt1 = CGPoint(x: 0, y: 0)
  let pt2 = CGPoint(x: rect.width, y: 0)
  let pt3 = CGPoint(x: rect.width, y: rect.height)
  let pt4 = CGPoint(x: 0, y: rect.height)
//  Drawing arcs with radius
  path.move(to: pt4)
  path.addArc(tangent1End: pt1, tangent2End: pt2, radius: 15)
  path.addArc(tangent1End: pt2, tangent2End: pt3, radius: 15)
  path.addArc(tangent1End: pt3, tangent2End: pt4, radius: 15)
  path.addArc(tangent1End: pt4, tangent2End: pt1, radius: 15)
//  Arrow
  path.move(to: pt1)
  path.addLine(to: CGPoint(x: placement == .leading ? 10 : rect.width-10, y: 0))
  path.addLine(to: CGPoint(x: placement == .leading ? 15 : rect.width-15, y: 0))
  path.addLine(to: CGPoint(x: placement == .leading ? 25 : rect.width-25, y: -15))
  path.addLine(to: CGPoint(x: placement == .leading ? 40 : rect.width-40, y: 0))
  }
  }
}

This is an example of container very similar to original iPad’s popover.

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Code example 2

Step 1

@State var show = false
VStack(alignment: ."...", spacing: "..."){
	if self.show{
	   PopoverButton()
	        ...
	}
	Button(action: {
	    withAnimation(."..."()){
	        self.show.toggle()
	    }  
	})
}

The second example is very easy to build, but also very easy to be destroyed by HIG

Step 2

struct Ex2ArrowShape: Shape{
    func path(in rect: CGRect) -> Path {
        let center = rect.width / 2
        return Path{ path in
            path.move(to:  CGPoint(x: 0, y: 0))
            path.addLine(to: CGPoint(x: rect.width, y: 0))
            path.addLine(to: CGPoint(x: rect.width, y: rect.height-20))
            path.addLine(to: CGPoint(x: center-15, y: rect.height-20))
            path.addLine(to: CGPoint(x: center, y: rect.height-5))
            path.addLine(to: CGPoint(x: center+15, y: rect.height-20))
            path.addLine(to: CGPoint(x: 0, y: rect.height-20))
        }
    }
}

Another example of container, this time builded for circle button.

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Contributing

If you have a suggestion that would make this better, please use contacts below. Don't forget to give the project a star! Thanks again!

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Contact

Discord: Roberto D'Anna#5386

Email: [email protected]

Project Link: https://github.com/Koryde/Popover-iPhone-examples

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