FlexibleAttributedText

FlexibleAttributedText is a Swift µpackage that provides NSAttributedString rendering in SwiftUI by wrapping either an NSTextView or a UITextView depending on the platform, which supports flexible views.

Supported Platforms

• macOS 11.0+
• iOS 14.0+
• tvOS 14.0+

Usage

import FlexibleAttributedText
import SwiftUI

struct ContentView: View {
  var body: some View {
    FlexibleAttributedText {
      let result = NSMutableAttributedString(
        string: """
          After the Big Bang
          A brief summary of time
          Life on earth
          10 billion years
          You reading this
          13.7 billion years
          """
      )

      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .title1)],
        range: NSRange(location: 0, length: 18)
      )
      result.addAttributes(
        [.link: URL(string: "https://en.wikipedia.org/wiki/Big_Bang")!],
        range: NSRange(location: 10, length: 8)
      )
      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .body)],
        range: NSRange(location: 19, length: 23)
      )
      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .title2)],
        range: NSRange(location: 43, length: 13)
      )
      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .body)],
        range: NSRange(location: 57, length: 16)
      )
      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .title2)],
        range: NSRange(location: 74, length: 16))
      result.addAttributes(
        [.font: UIFont.preferredFont(forTextStyle: .body)],
        range: NSRange(location: 91, length: 18)
      )

      return result
    }
    .background(Color.gray.opacity(0.5))
    .accentColor(.purple)
  }
}

An FlexibleAttributedText view takes all the available width and adjusts its height to fit the contents.

To use dynamic width, pass down an argument flexibleWidth with value true to enable flexible width.

To change the text alignment or line break mode, you need to add a .paragraphStyle attribute to the attributed string.

Installation

You can add FlexibleAttributedText to an Xcode project by adding it as a package dependency.

1. From the File menu, select Swift Packages › Add Package Dependency…
2. Enter https://github.com/wilmaplus/FlexibleAttributedText into the package repository URL text field
3. Link FlexibleAttributedText to your application target