ListView – Fyne Golang GUI Tutorial 55
ListView – Fyne Golang GUI Tutorial 55
We are using listView everywhere.
contact list, file list, website list etc
Fyne ListView tutorial is here for you.
Component of fyne listview
There are 3 main component of fyne listview.
1.Item count
Let suppose my list consist of 30 contacts number. I want to display their name and phone number in my listview.
2.items/ widget
Now I have to decide my widget. How I want to display my data to user. In a label or card ?
3.update data in widgets
I will setup listview to get the data and update data from the source.
OnSelected function in fyne listview
What function I want to perform, when the listview item is clicked/selected
OnUnselected function in fyne listview
And onUnselected is the opposite of onSelected. It will execute the function when a user unselect an item.
package main
// import fyne
import (
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/app"
"fyne.io/fyne/v2/widget"
)
func main() {
a := app.New()
// window and title
w := a.NewWindow("List View")
// resize
w.Resize(fyne.NewSize(400, 400))
// list View
// 3 arguments
// item count, 3 itmes in list
// widget, I want to use label widget
// update data of widget
list := widget.NewList(
// lets change item count from 3 to 30
func() int { return 30 }, // my list contain 3 items
func() fyne.CanvasObject { return widget.NewLabel("I want to use label") },
// last one
func(lii widget.ListItemID, co fyne.CanvasObject) {
// update data of widget
co.(*widget.Label).SetText("Here is my text")
},
)
// setup data on screen
w.SetContent(list)
w.ShowAndRun()
}
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