Using Frame to add header and footer text to other widgets:

Code:

package main

import (
	"github.com/gdamore/tcell/v2"
	"github.com/rivo/tview"
)

func main() {
	app := tview.NewApplication()
	frame := tview.NewFrame(tview.NewBox().SetBackgroundColor(tcell.ColorBlue)).
		SetBorders(2, 2, 2, 2, 4, 4).
		AddText("Header left", true, tview.AlignLeft, tcell.ColorWhite).
		AddText("Header middle", true, tview.AlignCenter, tcell.ColorWhite).
		AddText("Header right", true, tview.AlignRight, tcell.ColorWhite).
		AddText("Header second middle", true, tview.AlignCenter, tcell.ColorRed).
		AddText("Footer middle", false, tview.AlignCenter, tcell.ColorGreen).
		AddText("Footer second middle", false, tview.AlignCenter, tcell.ColorGreen)
	if err := app.SetRoot(frame, true).SetFocus(frame).Run(); err != nil {
		panic(err)
	}
}

See also: https://pkg.go.dev/github.com/rivo/tview#Frame