Beginner quistion

In the sdk there are samples available that should get you on the way with the different functionalities.

On my website I also have a step by step tutorial that should be able to help anyone (no coding experience required) to get started: http://starttorun.info/garmin-connect-iq-tutorial-overview/  and I'm also linking to other repo's with apps with source code http://starttorun.info/connect-iq-apps-with-source-code/  that should kickstart your development.

I'd advice you to start with my tutorial though (even though it's a data field and you want a watch app), the tutorial is really good to get the basics right!

Thanx Peter...

I will look into this; trying to learn the thing...

Rgds; Jesper

So i tried a lot of different, and i am beginning to see how it works.

Tried some of the samples along with Peter's suggestions.

I also played with some "menu" layouts etc...

So now i grabbed the code from activitymonitor help topic

using Toybox.ActivityMonitor;
using Toybox.System;

// get a HeartRateIterator object; oldest sample first
var hrIterator = ActivityMonitor.getHeartRateHistory(null, false);
var previous = hrIterator.next();                                   // get the previous HR
var lastSampleTime = null;                                          // get the last

while (true) {
    var sample = hrIterator.next();
    if (null != sample) {                                           // null check
        if (sample.hearRate != ActivityMonitor.INVALID_HR_SAMPLE    // check for invalid samples
            && previous.heartRate
            != ActivityMonitor.INVALID_HR_SAMPLE) {
                lastSampleTime = sample.when;
                System.println("Previous: " + previous.heartRate);  // print the previous sample
                System.println("Sample: " + sample.heartRate);      // print the current sample
        }
    }
}

// get ActivityMonitor info
var info = ActivityMonitor.getInfo();

var steps = info.steps;
var calories = info.calories;

System.println("You have taken: " + steps +
               " steps and burned: " + calories + " calories!");

I tried placing this code in onUpdate, onLayout etc... but nomatter what i do, the simulator crashes with error (to many bla. bla. bla.)

This HR monitor, i struggle to get working, and also showing on app, but i cant find anything about howto get further now, i am stuck again.

I need some suggestions, example to show me how i can display current HR etc.. on my app"face"

Strange that i cannot find anything usefull about this.

Rgds; Jesper

What's the crash you see?

Another way to get HR (getHeartRateHistory on updates every 90 seconds or so on many devices) is to use

Activity.getActivityInfo().currentHeartRate

That will be more "real time" on most devices, but it can be null if the watch isn't being worn.  With that you can also display HR in onPartialUpdate() to have more of a real-time HR on a watchface.  On Peter's site, theses a link to a tutorial I did on 1hz facefaces, and displaying HR is a common topic there.

Here's the basic code I user for HR in a watch face: I'm only looking for the newest value.

			//hasHR is a boolen I set earlier to check if getHeartRateHistory is available on the device
			ret="N.A.";
			if(Activity.getActivityInfo().currentHeartRate!=null) {
				thisHR=Activity.getActivityInfo().currentHeartRate;
				ret=thisHR.toString();
			} else if(hasHR) {
				var hrh=ActMon.getHeartRateHistory(1,true);
				ret="---";			
				if(hrh!=null) {
					var hrs=hrh.next();			
					if(hrs!=null && hrs.heartRate!=null && hrs.heartRate!=ActMon.INVALID_HR_SAMPLE) {
						thisHR=hrs.heartRate;
						ret=thisHR.toString();
					}
				}
			}

Ahh... i got some of it running now

"too long execution" is the watchdog timer tripping, and is typically something like an infinite loop.

In the code I posted, yes, you'll need to use "var" on some of the things.  In my actual code, they are defined elsewhere. on line 34 add a "var" in front of ret, and then add a line for "var thisHr;" right after that.

Oh...

On my 2. picture i did most of that, but you say and then add a line for "var thisHr;

I simply don't understand what you mean ? :)

... Jesper.

Ok, in the code, do this starting at line 34 in your code:

var ret="N.A.";  //add the var

var thisHR;     //add this line