Checkbox

A checkbox displays choices in Fyne, allowing the user to pick one option from a set

Basic Checkbox

Show Code

package main

import (
  "fyne.io/fyne/v2"
  "fyne.io/fyne/v2/app"
  "fyne.io/fyne/v2/container"
  "fyne.io/fyne/v2/widget"
)

func main() {
  myApp := app.New()
  myWindow := myApp.NewWindow("Choices Widget")

  // Create a label
  label := widget.NewLabel("Not Checked!")

  // Checkbox to update the label
  check := widget.NewCheck("Accept T&C", func(value bool) {
    if value {
      label.SetText("Accepted")
    } else {
      label.SetText("Not checked!")
    }
  })

  content := container.NewVBox(
    label,
    check,
  )

  myWindow.SetContent(content)
  myWindow.Resize(fyne.NewSize(300, 150))
  myWindow.ShowAndRun()
}

Checkbox Group

Show Code

package main

import (
  "fmt"

  "fyne.io/fyne/v2"
  "fyne.io/fyne/v2/app"
  "fyne.io/fyne/v2/container"
  "fyne.io/fyne/v2/widget"
)

func main() {
  myApp := app.New()
  myWindow := myApp.NewWindow("Checkbox Group Example")

  // Label to show selected items
  label := widget.NewLabel("No choices selected")

  // Checkbox group
  checkGroup := widget.NewCheckGroup(
    []string{"Option A", "Option B", "Option C"},
    func(selected []string) {
      if len(selected) == 0 {
        label.SetText("No choices selected")
      } else {
        label.SetText(fmt.Sprintf("Selected: %v", selected))
      }
    },
  )

  // Set some defaults
  checkGroup.SetSelected([]string{"Option B"})

  // Arrange UI
  content := container.NewVBox(
    label,
    checkGroup,
  )

  myWindow.SetContent(content)
  myWindow.Resize(fyne.NewSize(300, 200))
  myWindow.ShowAndRun()
}

Checkbox With Data

Show Code

package main

import (
  "fyne.io/fyne/v2"
  "fyne.io/fyne/v2/app"
  "fyne.io/fyne/v2/container"
  "fyne.io/fyne/v2/data/binding"
  "fyne.io/fyne/v2/widget"
)

func main() {
  myApp := app.New()
  myWindow := myApp.NewWindow("Check With Data")

  // Create bound boolean
  acceptTerms := binding.NewBool()

  // Label to reflect checkbox state
  label := widget.NewLabel("Not Accepted")

  // Create checkbox bound to boolean data
  check := widget.NewCheckWithData("Accept Terms & Conditions", acceptTerms)

  // Add listener to update label when checkbox changes
  acceptTerms.AddListener(binding.NewDataListener(func() {
    val, _ := acceptTerms.Get()
    if val {
      label.SetText("Accepted")
    } else {
      label.SetText("Not Accepted")
    }
  }))

  // Layout
  content := container.NewVBox(
    label,
    check,
  )

  myWindow.SetContent(content)
  myWindow.Resize(fyne.NewSize(300, 150))
  myWindow.ShowAndRun()
}