Get Bitmap from assets

getPicFromAsset.kt

    private fun getPicFromAsset(imageView: ImageView, assetName: String): Bitmap? {
        // Get the dimensions of the View
        val targetW = imageView.width
        val targetH = imageView.height

        if (targetW == 0 || targetH == 0) {
            // view has no dimensions set
            return null
        }

        try {
            val inputStream = mAssetManager.open("img/$assetName")
            // Get the dimensions of the bitmap
            val bmOptions = BitmapFactory.Options()
            bmOptions.inJustDecodeBounds = true
            BitmapFactory.decodeStream(inputStream, Rect(-1, -1, -1, -1), bmOptions)
            val photoW = bmOptions.outWidth
            val photoH = bmOptions.outHeight

            // Determine how much to scale down the image
            val scaleFactor = Math.min(photoW / targetW, photoH / targetH)

            inputStream.reset()

            // Decode the image file into a Bitmap sized to fill the View
            bmOptions.inJustDecodeBounds = false
            bmOptions.inSampleSize = scaleFactor
            bmOptions.inPurgeable = true

            return BitmapFactory.decodeStream(inputStream, Rect(-1, -1, -1, -1), bmOptions)
        } catch (e: IOException) {
            e.printStackTrace()
            return null
        }

    }