ink

  
Inspire best-in-class pen apps. Lower the developer barrier to entry for high performance, beautiful inking experiences.
Latest Update Stable Release Release Candidate Beta Release Alpha Release
June 18, 2025 - - - 1.0.0-alpha05

Declaring dependencies

To add a dependency on Ink, you must add the Google Maven repository to your project. Read Google's Maven repository for more information.

Add the dependencies for the artifacts you need in the build.gradle file for your app or module:

Groovy

dependencies {
  
    implementation "androidx.ink:ink-authoring:1.0.0-alpha05"
    implementation "androidx.ink:ink-brush:1.0.0-alpha05"
    implementation "androidx.ink:ink-geometry:1.0.0-alpha05"
    implementation "androidx.ink:ink-nativeloader:1.0.0-alpha05"
    implementation "androidx.ink:ink-rendering:1.0.0-alpha05"
    implementation "androidx.ink:ink-strokes:1.0.0-alpha05"
    
}

Kotlin

dependencies {


    implementation("androidx.ink:ink-authoring:1.0.0-alpha05")
    implementation("androidx.ink:ink-brush:1.0.0-alpha05")
    implementation("androidx.ink:ink-geometry:1.0.0-alpha05")
    implementation("androidx.ink:ink-nativeloader:1.0.0-alpha05")
    implementation("androidx.ink:ink-rendering:1.0.0-alpha05")
    implementation("androidx.ink:ink-strokes:1.0.0-alpha05")
}

For more information about dependencies, see Add build dependencies.

Feedback

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Create a new issue

See the Issue Tracker documentation for more information.

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Version 1.0

Version 1.0.0-alpha05

June 18, 2025

androidx.ink:ink-*:1.0.0-alpha05 is released. Version 1.0.0-alpha05 contains these commits.

New Features

  • Compose interoperability modules for authoring, brush, and geometry modules

API Changes

  • New Compose interoperability modules and APIs, API cleanup (I0e464)
  • InProgressStroke.enqueueInputs/updateShape methods which returned kotlin.Result are removed, clients should use e.g. enqueueInputsOrThrow or enqueueInputsOrIgnore instead. InProgressStroke.getNeedsUpdate is renamed to isUpdateNeeded. InProgressStroke.populateOutlinePosition now returns its output parameter to allow call chaining, consistent with other methods in Ink. The TextureBitmapStore interface is moved from the rendering module to the brush module. BoxAccumulator.populateFrom is made to take a nullable immutable Box instead of a mutable BoxAccumulator, to make it clearer what is mutated, callers should change boxAccumulator.add(other) to boxAccumulator.add(other.box). BrushUtil.toBuilderWithAndroidColor/createBuilderWithAndroidColor are removed, use the setAndroidColor of Brush.Builder after constructing instead. (Ia7155)
  • Previously experimental property InProgressStrokesView.textureBitmapStore is now private. There are still public accessors for this property. (I1d706)

Bug Fixes

  • Improved performance for custom brushes containing many particles.

Version 1.0.0-alpha04

April 9, 2025

androidx.ink:ink-*:1.0.0-alpha04 is released. Version 1.0.0-alpha04 contains these commits.

New Features

  • Introduces new experimental APIs for custom BrushFamily objects, enabling new brushes like Pencil and Laser Pointer. The API allows for loading brushes defined by this proto. (I8809a)

Version 1.0.0-alpha03

February 12, 2025

androidx.ink:ink-*:1.0.0-alpha03 is released. Version 1.0.0-alpha03 contains these commits.

New Features

  • Disk and network size savings: Serialization of StrokeInputBatch, saving many lines of code, with the resulting objects a tiny fraction of the size of traditionally stored strokes. (Ie898d)
  • Lasso selection: dashed line brush to draw a selection stroke, and a function to turn the selection stroke into a PartitionedMesh for geometry queries. (Ia38a0)

Version 1.0.0-alpha02

December 11, 2024

androidx.ink:ink-*:1.0.0-alpha02 is released. Version 1.0.0-alpha02 contains these commits.

API Changes

  • Assorted bug fixes. (I05dd8)

External Contribution

  • Deprecate BuildCompat.isAtLeastV. Callers should check SDK_INT against 35 directly instead. (I294d1)

Version 1.0.0-alpha01

October 2, 2024

androidx.ink:ink-*:1.0.0-alpha01 is released. Version 1.0.0-alpha01 contains these commits.

New Features

  • A modular and configurable library to make it easy to create, render, and manipulate beautiful ink strokes authored in your application.

API Changes

New modules to help developers build rich inking experiences:

  • Authoring: Use InProgressStrokesView for high-performance, low latency rendering of strokes in real time as inputs are received.
  • Rendering: Use CanvasStrokeRenderer and ViewStrokeRenderer to draw the finished ink strokes as part of an app’s user interface.
  • Strokes: Core data types used for inking features.
  • Brush: Configurable specification of how strokes will look and act in response to user input.
  • Geometry: Geometric operations like intersection and coverage to power tools like selection and erasing.