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Wouter125/BottomSheet 1.4.3
An iOS library for SwiftUI to create draggable sheet experiences similar to iOS applications like Maps and Stocks.
⭐️ 10
🕓 3 weeks ago
iOS
.package(url: "https://github.com/Wouter125/BottomSheet.git", from: "1.4.3")

BottomSheet

An iOS library for SwiftUI to create draggable sheet experiences similar to iOS applications like Maps and Stocks.

Feature overview

The library currently supports;

  • ☑ Unlimited snap positions
  • ☑ Realtime position callback
  • ☑ Absolute and relative positioning
  • ☑ Customizable animation parameters
  • ☑ An optional sticky header
  • ☑ Views with and without a scrollview
  • ☑ Custom snap threshold
  • ☑ Dynamically exclude snap positions
  • ☑ Dynamically disable and enable dragging

How to install

Currently BottomSheet is only available through the Swift Package Manager or manual install.

  1. Installation through Swift Package Manager can be done by going to File > Add Packages. Then enter the following URL in the searchbar; github.com/Wouter125/BottomSheet.

  2. Manual installation can be done by cloning this repository and dragging all assets into your Xcode Project.

How to use

  1. Import BottomSheet

  2. Create a custom enum with all snap positions. It can be relative or absolute. Order does not matter. Absolute positioning should look something like this;

enum BottomSheetPosition: CGFloat, CaseIterable {
    case bottom = 182
    case middle = 320
    case top = 700
}

Relative positioning should always be between 0 and 1 and can look like this;

enum BottomSheetRelativePosition: CGFloat, CaseIterable {
    case bottom = 0.216
    case middle = 0.355
    case top = 0.829
}
  1. Create a state property that contains the bottom sheet start position;
@State var position: BottomSheetPosition = .middle
  1. Add the BottomSheetView to your SwiftUI view hierachy;
BottomSheetView(
    position: $position,
    header: { }
    content: { }
}
  1. Optionally tweak the animation curve / snap threshold with a view modifier or receive the current panel position with a callback;
BottomSheetView(
    position: $position,
    header: { }
    content: { }
}
.animationCurve(mass: 1, stiffness: 250)
.snapThreshold(1.8)
.onBottomSheetDrag { translation in
    print("Translation", translation)
}

Interface

Modifier Type Default Description
snapThreshold Double 1.8 The threshold to let the drag gesture ignore the distance. Value between 0 and 3.
animationCurve.mass Double 1.2 The mass of the object attached to the spring.
animationCurve.stiffness Double 200 The stiffness of the spring.
animationCurve.damping Double 25 The spring damping value.
isDraggable Boolean true Whether you can drag the BottomSheet or not.
excludeSnapPositions Array [] An array that contains the enum positions that you want to exclude when snapping

Example

To give you an idea of how to use this library you can use the example that is attached to this repo. Simply clone it and open the BottomSheetExample folder in Xcode.

Roadmap

  1. Add landscape support
  2. Add iPad support

GitHub

link
Stars: 10
Last commit: 3 weeks ago
jonrohan Something's broken? Yell at me @ptrpavlik. Praise and feedback (and money) is also welcome.

Release Notes

Rounding issue bugfix
3 weeks ago

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API | Analytics