Add translations to hello world app/init command

cmd/fyne/internal/commands/init.go

@@ -152,6 +152,20 @@ func initAction(ctx *cli.Context) error {
 		return fmt.Errorf("failed to run command: %v", err)
 	}
 
+	if err := os.Mkdir("translations", 0o755); err != nil {
+		return err
+	}
+
+	args := []string{ctx.App.Name, "translate"}
+	if verbose {
+		args = append(args, "-v")
+	}
+	args = append(args, "translations/en.json")
+	args = append(args, "main.go")
+	if err := ctx.App.Run(args); err != nil {
+		return fmt.Errorf("failed to run command: %v", err)
+	}
+
 	fmt.Println("Your new app is ready. Run it directly with: go run .")
 
 	return nil

cmd/fyne/internal/mobile/binres/binres_test.go

@@ -266,9 +266,10 @@ func compareNamespaces(have, want *Namespace) error {
 	return nil
 }
 
-func rtou(a []TableRef) (b []uint32) {
-	for _, x := range a {
-		b = append(b, uint32(x))
+func rtou(a []TableRef) []uint32 {
+	b := make([]uint32, len(a))
+	for i, x := range a {
+		b[i] = uint32(x)
 	}
 	return b
 }

cmd/fyne/internal/mobile/build.go

@@ -33,8 +33,8 @@ const (
 	minAndroidAPI = 15
 )
 
-func runBuild(cmd *command) (err error) {
-	_, err = runBuildImpl(cmd)
+func runBuild(cmd *command) error {
+	_, err := runBuildImpl(cmd)
 	return err
 }
 

cmd/fyne/internal/templates/data/hello_world.got

@@ -1,14 +1,25 @@
 package main
 
 import (
+	"embed"
+
+	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/app"
+	"fyne.io/fyne/v2/lang"
 	"fyne.io/fyne/v2/widget"
 )
 
+//go:embed translations/*.json
+var translationsFS embed.FS
+
 func main() {
 	a := app.NewWithID({{ printf "%q" .Details.ID }})
 	w := a.NewWindow({{ printf "%q" .Details.Name }})
 
-	w.SetContent(widget.NewLabel("Hello World!"))
+	if err := lang.AddTranslationsFS(translationsFS, "translations"); err != nil {
+		fyne.LogError("failed to load translations", err)
+	}
+
+	w.SetContent(widget.NewLabel(lang.L("Hello World!")))
 	w.ShowAndRun()
 }