# 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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Kotlin\|[Java](https://developer.android.com/reference/androidx/ink/authoring/InProgressStrokeId "View this page in Java")

<br />

```
class InProgressStrokeId
```

<br />

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Identifier for a stroke that is being authored via[InProgressStrokesView](https://developer.android.com/reference/kotlin/androidx/ink/authoring/InProgressStrokesView), returned from[InProgressStrokesView.startStroke](https://developer.android.com/reference/kotlin/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                                                                                                                |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `@`[VisibleForTesting](https://developer.android.com/reference/kotlin/androidx/annotation/VisibleForTesting) [InProgressStrokeId](https://developer.android.com/reference/kotlin/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
InProgressStrokeId()
```