Which class comes first....?

I really appreciated the blog by Peter de Decker:
https://developer.garmin.com/index.php/blog/post/pro-tip-tackling-connect-iq-versions-screen-shapes-and-memory-limitations

I am building a new datafield on the method he proposes with a hierarchy of classes based on 4 layers of inheritance. Building it, I am wondering which code gets executed first. If several classes with "on update" exist with code, where the classes refer to eachother, which code gets executed first?

peterdedecker over 8 years ago

It follows what you tell it to do:

The first class that is executed is the main class referenced from the manifest.xml (entry), in the example blog this is PetersWatchFaceApp
In that class it picks up the getInitialView method to instantiate the highest level class level (DeviceView) so it will also use this onUpdate first if it exists.
From there it uses the logic within each function and will execute lower levels of the inheritance tree if you decide to call it eg

class DeviceView extends CiqView { .... function onUpdate(dc) { CiqView.onUpdate(dc); // you explicitely state when and where you execute the code of the lower class levels.... etc... } }

GHG23 over 8 years ago

Ah, quite logical ????. Thanks!

GHG23 over 8 years ago

Ah, quite logical ????. Thanks!

Strange those question marks. I meant:
Ah, quite logical!!!! Thanks!