onPartialUpdate doesn't work on all devices

How can I know if a device supports partial update in the code.

if( Toybox.WatchUi.WatchFace has :onPartialUpdate ) {....}

I use this to set a boolean when the Wf starts and then use that boolean where needed.

if you exceed the avg power budget of 30ms, onPatrialUpdate() won't be called any more, and by way of a delegate, you can see if that occurs.

Thanks,it really works

jim_m_58 said:

onPartialUpdate() is only available on devices starting with the fenix 5, with the exception of the forerunner 45.

Just to be clear, onPartialUpdate works with devices that have ConnectIQ 2.3.0 support. I'm fairly certain that the fr45 is a ConnectIQ 1.x device.

Acutally, it.s not 2.3.0 support, as devices like the va-hr and fr 735 have CIQ 2.4.x (the only watches on CIQ 2.x) , but don't have the display hardware to support onPartialUpdate().  And yes, the fr45 is CIQ 1.4.x.

So today, t's really watches with 3.x with one exception.  The Venu (I forgot about that one in my first post!)

Sorry, yes. I worded that wrong and now I have egg on my face. I meant to say onPartialUpdate only works with devices that have 2.3.0 support.

To summarize, for onPartialUpdate support, a device must have 2.3.0 support AND the option has to be enabled when building in the device firmware. i.e., no device with 1.x support has onPartialUpdate, but some 3.x devices may have it disabled.

Thanks for the correction jim_m_58.