ScreenCapture

ScreenCapture is a Compose Multiplatform library for capturing screens in your Android or iOS App.

Installation

Add the dependency to your build.gradle.kts file:

commonMain.dependencies {
    implementation("network.chaintech:compose-multiplatform-screen-capture:1.0.1")
}

Usage

Android

• Include this in your AndroidManifest.xml:

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="network.chaintech.cmp.screenshot.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>

• Create file_paths.xml in androidMain->res->xml and add the following code:

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path
        name="screen_shots"
        path="share_images" />
    <external-path
        name="external_files"
        path="." />
</paths>

• Add the following line in onCreate of your Activity class:

class AppActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        ...
        AppContext.apply { set(this@AppActivity) }
        ...
    }
}

Composable Usage

val captureController = rememberScreenCaptureController()

ScreenCaptureComposable(
    modifier = Modifier,
    screenCaptureController = captureController,
    shareImage = true,
    onCaptured = { img, throwable ->

    }
) {
    AppTheme {
        content() // place your composable content here
    }
}

Capture Image Example

ElevatedButton(
    modifier = Modifier
        .padding(top = 40.dp)
        .widthIn(min = 200.dp).align(Alignment.CenterHorizontally),
    onClick = {
        captureController.capture()
    },
    content = {
        Text(
            "Preview ScreenShot",
            style = TextStyle(fontSize = 16.sp),
            fontWeight = FontWeight.Bold
        )
    },
    colors = ButtonDefaults.elevatedButtonColors(containerColor = Color.Cyan),
)

Explanation

• modifier: Modifier for modifying the layout of the screen capture component.
• screenCaptureController: Controller for managing the screen capture functionality.
• shareImage: Boolean indicating whether the user intends to share the captured image.
• onCaptured: Callback invoked when an image is successfully captured or when there's a failure during the capture process. It provides an ImageBitmap representing the captured image and a Throwable in case of any errors.
• content: A composable function that defines the content to be displayed within the screen capture component. This could include buttons, text, or any other UI elements related to screen capture functionality.

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