Keyevent on Watchface

Svake 1 month ago

I know, everybody will tell me it's not possible to track keyevents on watchfaces. But because the API Docs state clear that it can be used in watchfaces as well, I try anyway:

https://developer.garmin.com/connect-iq/api-docs/Toybox/WatchUi/KeyEvent.html , see app types and here https://developer.garmin.com/connect-iq/api-docs/Toybox/WatchUi/KeyEvent.html#getKey-instance_function / Appteypes.

What do I miss here? I tried to get this running (manifest min SDK 8.0, all permissions set, Fenix 8):

import Toybox.Application;

import Toybox.Lang;

import Toybox.WatchUi;

import Toybox.System;

class TestApp extends Application.AppBase {

function initialize() {

AppBase.initialize();

}

function getInitialView() as [Views] or [Views, InputDelegates] {

return [new TestView(), new MyInputDelegate()];

}

function onSettingsChanged() as Void {

WatchUi.requestUpdate();

}

class MyBehaviorDelegate extends BehaviorDelegate {

function initialize(){

BehaviorDelegate.initialize();

}

function onKey(keyEvent) {

System.println(keyEvent.getKey()); // e.g. KEY_MENU = 7

return true;

}

class MyInputDelegate extends WatchUi.InputDelegate {

function initialize(){

InputDelegate.initialize();

}

function onKey(keyEvent) {

System.println(keyEvent.getKey()); // e.g. KEY_MENU = 7

return true;

}

function getApp() as TestApp {

return Application.getApp() as TestApp;

}

It works as long as I only call new TestView() and it runtime crashes as soon as I also call new MyInputDelegate()or new MyBehaviorDelegate().

Error: Unexpected Type Error
Details: Failed to start CIQ Application
Stack:

Encountered app crash.

Does anyone has an idea how to make it work or are the docs just plain wrong? What I try to do is to track whether the user activates the backlight on the device, but I could not find any possibility to track the state of the backlight either and then I tried to track the backlight button instead.