I’m trying to create a smartApp that creates a virtual momentary device but it keep generating the following `errorNo signature of method: dev15197754358211429585605.installed() is applicable for argument types: () values: [] on line null` Here’s a portion of the code: def installed() { initiali…

I just went through this today.

I noticed this when creating my HubDuino Service Manager App + Child Drivers. For me, I just saw the errors in the Logs which annoyed me enough to simply add an empty installed(){} routine in every child. I haven’t had any issues with my Parent App / Child Devices.

It created without an error…but the “In use by” is blank for the child device. parent.childOn() generates: errornull on line 36 It still seems like the link between parent and child is not fully formed.

hmmm…I’ll take a look at your code and see whats different.

What’s on line 36 of the app; is there a line 36 in the driver?

My code auto creates child devices based on data received from the Arduino/ESP8266… So it always checks for the existence of a child to decide if is needs to create one. Not the prettiest code, but it seems to work well-enough. DanielOgorchock/ST_Anything/blob/master/HubDuino/Apps/hubduin…

if the link was not there, i would expect to see a null pointer exception… can you try adding a try catch around your call to parent and see what exception you get? I just tried creating a child device and then calling parent from there and it seemed fine. what does parent.childOn() do? can you a…

So just to clear up any confusion… Apps can have child apps Apps can have child devices Devices can NOT have child devices (yet)

I commented out everything and just have it log.debug. I’ll try your suggestions and see what I get. @bravenel , line 36 simply does “parent.childOn()”

Can we create child devices?

Developers

ogiewon May 22, 2018, 7:41pm 29

Looks like Hubitat Firmware v 1.0.9 adds support for Composite Device Handlers! Thank you Hubitat team!