Jetpack Compose take screenshot of composable function?

Question

I want to take screenshot of specific composable function on Jetpack Compose. How can I do this? Please, anyone help me. I want to take screenshot of composable function and share with other applications.

Example of my function:

@Composable
fun PhotoCard() {
    Stack() {
        Image(imageResource(id = R.drawable.background))
        Text(text = "Example")
    }
}

How to take screenshot of this function?

Answer 1

You can create a test, set the content to that composable and then call composeTestRule.captureToImage(). It returns an ImageBitmap.

Example of usage in a screenshot comparator: https://github.com/android/compose-samples/blob/e6994123804b976083fa937d3f5bf926da4facc5/Rally/app/src/androidTest/java/com/example/compose/rally/ScreenshotComparator.kt