Take Screenshot of SurfaceView

Question

Am developing a simple camera app. I have code that takes screenshot of the whole activity and writes it to the Sd card. the problem is that the Surfaceview returns a black

Answer 1

This is how I do it. Put this method in some Util class

/**
 * Pixel copy to copy SurfaceView/VideoView into BitMap
 */
 fun usePixelCopy(videoView: SurfaceView,  callback: (Bitmap?) -> Unit) {
    val bitmap: Bitmap = Bitmap.createBitmap(
        videoView.width,
        videoView.height,
        Bitmap.Config.ARGB_8888
    );
    try {
    // Create a handler thread to offload the processing of the image.
    val handlerThread = HandlerThread("PixelCopier");
    handlerThread.start();
    PixelCopy.request(
        videoView, bitmap,
        PixelCopy.OnPixelCopyFinishedListener { copyResult ->
            if (copyResult == PixelCopy.SUCCESS) {
                callback(bitmap)
            }
            handlerThread.quitSafely();
        },
        Handler(handlerThread.looper)
    )
    } catch (e: IllegalArgumentException) {
        callback(null)
        // PixelCopy may throw IllegalArgumentException, make sure to handle it
        e.printStackTrace()
    }
}

Usage:

usePixelCopy(videoView) { bitmap: Bitmap? ->
            processBitMp(bitmap)
        }

Note: Video View is a Subclass of SurfaceView so this method can take screenshot of video View as well