IssueTracker

Component used: Wear Watchface

Version used: 1.0.0

I was writing a complication that used one of the SystemDataSources. For example:

val timeComplication: ComplicationSlot = ComplicationSlot.createRoundRectComplicationSlotBuilder(
  id = 0,
  canvasComplicationFactory = canvasComplicationFactory,
  supportedTypes = listOf(ComplicationType.SHORT_TEXT),
  defaultDataSourcePolicy = DefaultComplicationDataSourcePolicy(
    SystemDataSources.DATA_SOURCE_TIME_AND_DATE
  ),
  bounds = ComplicationSlotBounds(RectF(0.0f, 0.0f, 1.0f, 1.0f))
).build()

However, I never called setDefaultDataSourceType(ComplicationType.SHORT_TEXT), which meant that my complication would never get any data from the system data source.

It would be nice if there was a Lint warning if a developer uses a non-empty DefaultComplicationDataSourcePolicy and forgets to call setDefaultDataSourceType.

There's a guide for adding Lint checks to AndroidX libraries that might be a useful starting point for creating the artifact needed to bundle Lint checks with Wear Watchface.