onUpdate is called twice

In a widget, other than the first time, onUpdate() only gets called in response to something like WatchUi.requestUpdate. Widgets aren't like watch faces where onUpdate is called on a regular basis.  When are you seeing onUpdate being called twice?  Does it happen if you comment out all calls to requestUpdate?

using onShow is not a solution.  onUpdate() is the only place where you should be updating the screen in a widget

If you are doing something where a view gets pushed, use SLIDE_IMMEDIATE, as the others can cause multiple onUpdate call while the slide is occurring on some devices.

is it possible you are in simulator and have a layout that has 2 datafields?

Per what is posted on github, it's a widget.

yes its a widget.
And it seems to happen already on the first load of the main View. no requestUpdate called at that time nor does the main View actually has an requestUpdate

I noticed it when sticking in println debug messages into the onUpdate() function

getInitialView if the app returns a View and a Delegate

https://github.com/individual-it/BatteryGuesstimate/blob/master/app/source/BatteryGuesstimateApp.mc#L44-L48

If I stick in println into the view I see that it goes

initialize
onLayout
onShow
and then twice onUpdate

I'm puzzled

the view has an Layout https://github.com/individual-it/BatteryGuesstimate/blob/master/app/source/BatteryGuesstimateView.mc#L17

and used View.onUpdate(dc); As far as I understood that is needed for the layout.

Then the View draws a graph and that's it

In the delegate nothing happens except of pushing an other view when a button is pressed https://github.com/individual-it/BatteryGuesstimate/blob/master/app/source/BatteryGuesstimateDelegate.mc

You see this in the sim or on a real device?  Which device?  To be honest, if this only happens once at start up, I don't think I'd worry about it.

In the simulation for Instinct2, I haven't done all the debugging on the real device

Hello. I'm doing a watch app and my "watch" time, is freezer, is there some solution to get onUpdate called every minute ? thanks!

In a device app or a widget. you need a timer where when it fires, it calls WatchUi.requestUpdate or some other way to trigger requestUpdate.  They are not like a watch face where onUpdate is called for you.

I have a couple of things where I only want to update the screen if onBackgroundData  or onSettingsChanged is called for example..

thanks!