# InProgressStrokeId

Artifact: [androidx.ink:ink-authoring](https://developer.android.com/jetpack/androidx/releases/ink) [View Source](https://cs.android.com/search?q=file:androidx/ink/authoring/InProgressStrokeId.kt+class:androidx.ink.authoring.InProgressStrokeId) Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/ink#1.0.0)

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```
public final class InProgressStrokeId
```

<br />

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Identifier for a stroke that is being authored via `https://developer.android.com/reference/androidx/ink/authoring/InProgressStrokesView`, returned from `https://developer.android.com/reference/androidx/ink/authoring/InProgressStrokesView#startStroke(android.view.MotionEvent,kotlin.Int,androidx.ink.brush.Brush,android.graphics.Matrix,android.graphics.Matrix)` and an input to some of its other functions. This identifier is unique within the app process lifetime.

It can be used for equality checks and as a map key.

## Summary

| ### Public constructors |
|---|
| `@https://developer.android.com/reference/androidx/annotation/VisibleForTesting https://developer.android.com/reference/androidx/ink/authoring/InProgressStrokeId#InProgressStrokeId()()` |

## Public constructors

### InProgressStrokeId

Added in [1.0.0](https://developer.android.com/jetpack/androidx/releases/ink#1.0.0)

```
@VisibleForTesting
public InProgressStrokeId()
```