take screen shot

private fun getScreenShot(view: View): Bitmap {

        val returnedBitmap = Bitmap.createBitmap(view.width, view.height, Bitmap.Config.ARGB_8888)
        val canvas = Canvas(returnedBitmap)
        val bgDrawable = view.background
        if (bgDrawable != null)
            bgDrawable.draw(canvas)
        else canvas.drawColor(Color.BLUE)
        view.draw(canvas)
        Toast.makeText(context, "screenshot captured", Toast.LENGTH_LONG).show()
        return returnedBitmap
        }

    private fun saveImageInStorage(bitmap: Bitmap) {
        val root: String = Environment.getExternalStorageDirectory().absolutePath
        val myDir = File("$root/saved_images")
        myDir.mkdirs()
        var dateFormat = SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
        var currentDateTime:String = dateFormat.format( Date())
        val fileName = "$currentDateTime.jpg"
        val file = File(myDir, fileName)
        if (file.exists()) file.delete()
        try {
            val out = FileOutputStream(file)
            bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out)
            out.flush()
            out.close()
        }catch (e:Exception){
            e.printStackTrace()
        }
    }