Stopping an exercise after X steps.

[JonahMonaghan]

Is there any way to stop an exercise after a certain amount of steps? I'm trying to make a timed challenge where the user needs to make X amount of steps within an hour. I've tried several things but everything results in my Fitbit or app crashing.

The gist of my what I'm trying to do is here:

btn3.onactivate = function(evt){
exercise.start("Basic exercise");
challenge();
}

function challenge(){
//Track steps until goal is reached, or until an hour has passed.
}

Any help would be appreciated!

Edit: I have tried a while loop which crashed the app and a recursive function which crashed the Fitbit all together.

[JonFitbit · Accepted solution]

You'll need to get the start time, and current number of steps when the exercise starts, then periodically check the difference between the time, and the step count.

Something like this:

import { today } from "user-activity";

let startTime;
let startSteps;
let timerId;

btn3.onactivate = (evt) => {
  startTime = new Date();
  startSteps = today.adjusted.steps;
  timerId = setInterval(checkStatus, 60 * 1000);
  // start exercise
}

function checkStatus() {
  // check now vs. startTime - is it within an hour
  // check startSteps vs. today.adjusted.steps
  // if meets criteria, clearInterval(timerId) and stop exercise
}

[JonahMonaghan]

Would you be able to provide API links for the setInterval and Date methods? I'm new to JavaScript and cling to the API for assistance.

Edit/Note: I'm asking because I can't seem to find them on my phone and I won't have access to my desktop for a few days and I'd rather learn it inside out before sitting down to code again.

[JonFitbit]

The device supports EcmaScript 5.1, so those are just standard features of JavaScript.

https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setInterval

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date