About

Fyne is an easy to use UI toolkit and app API written in Go. It is designed to build applications that run on desktop and mobile devices with a single codebase.

Version 1.2 is the current release which added support for iOS and Android devices as well as providing much simpler ways to write custom widgets. We are now working towards 1.3 which will add data binding and some more advanced widgets such as tables and lists.

Prerequisites

You will need Go version 1.12 or later. As Fyne uses CGo you will require a C compiler (typically gcc). If you don't have one set up the instructions at Compiling may help.

By default Fyne uses the gl golang bindings which means you need a working OpenGL configuration (or GLES for ARM or mobile devices). Debian/Ubuntu based systems may also need to install the libegl1-mesa-dev and xorg-dev packages.

Using the standard go tools you can install Fyne's core library using:

go get fyne.io/fyne

Widget demo

To run a showcase of the features of Fyne execute the following:

go get fyne.io/fyne/cmd/fyne_demo/
./fyne_demo

And you should see something like this (after you click a few buttons):

Or if you are using the light theme:

Getting Started

Fyne is designed to be really easy to code with. If you have followed the prerequisite steps above then all you need is a Go IDE (or a text editor).

Open a new file and you're ready to write your first app!

package main

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

func main() {
	app := app.New()

	w := app.NewWindow("Hello")
	w.SetContent(widget.NewVBox(
		widget.NewLabel("Hello Fyne!"),
		widget.NewButton("Quit", func() {
			app.Quit()
		}),
	))

	w.ShowAndRun()
}

And you can run that simply as:

go run main.go

It should look like this:

Note that Windows applications load from a command prompt by default, which means if you click an icon you may see a command window. To fix this add the parameters -ldflags -H=windowsgui to your run or build commands.

Documentation

More documentation is available at the Fyne developer website or on godoc.org.

Examples