Mobile Development

Build native iOS and Android apps in Wyn.

iOS App

fn wyn_app_title() -> string {
    return "My App"
}

fn wyn_app_build(ctx: int) {
    wyn_ui_text(ctx, "Hello World!", 28)
    wyn_ui_spacer(ctx, 16)
    wyn_ui_button(ctx, "Tap Me", 1)
}

fn wyn_on_button(id: int) {
    println("Button tapped!")
}

fn main() -> int {
    return wyn_ios_main(0, 0)
}

Package for iOS

wyn package ios app.wyn --name MyApp --id com.example.myapp
# Creates MyApp.app (signed, ready for device)

Package for Android

wyn package android app.wyn --name MyApp --id com.example.myapp
# Creates MyApp.apk (signed with debug key)

UI Components

Function	iOS	Description
wyn_ui_text(ctx, text, size)	UILabel	Display text
wyn_ui_button(ctx, title, id)	UIButton	Tappable button
wyn_ui_spacer(ctx, height)	UIView	Vertical spacing

Mobile APIs

// Storage (persists across app launches)
wyn_storage_set("key", "value")
var val = wyn_storage_get("key")

// Clipboard
wyn_clipboard_set("copied text")
var text = wyn_clipboard_get()

// Notifications
wyn_notify("Title", "Body text")

// Haptic feedback
wyn_vibrate()

Hot Reload

During development, use wyn hot for instant code reloading:

wyn hot app.wyn
# [hot] watching app.wyn (Ctrl+C to stop)
# [hot] reload #1
# Hello World!
# ... edit app.wyn ...
# [hot] reload #2
# Hello Updated World!

Changes are compiled and reloaded via dlopen — no restart needed.

See Also

• Cross-Compilation — build for other platforms
• Installation — install Wyn