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Custom Views & Drawables Overview

Primitive Components are used to render views or drawables, and should only be created when you need to integrate your own views/drawables with Litho.

The Primitive Components section contains the following pages:

  • Creating a Primitive Component - details how to create a Primitive Component responsible for rendering a View or Drawable. Also, compares Primitive Components with KComponents.
  • Lifecycle of a Primitive - covers the purpose and creation of a Primitive in addition to how to create and mount its content.
  • Measuring - shows different strategies to measure the content the Primitive Component will render.
  • Controllers Pattern - illustrates the use of controllers by implementing a simple TimePicker that shows an arbitrary time.
  • Content Pooling - details a strategy that can be used to populate the content pools to optimise first mount performance.
  • Tracing - shows how to customize performance tracing information for Primitive Components.
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Primitive Components provide the building blocks for creating components that render native Android Views or Drawables.

If you have existing MountSpec components, see Migrating MountSpecs for migration guidance.