Android. Draw text on Bitmap.

There is described how to draw some text on an image from the resource.

I wanted to make dynamically text and draw text in a circle on the template of the image.
My template for painting:

I implemented next function:

//Change text size according text length
private fun getTextSize(text1: String, text2: String) =
        if (text1.length >= 21 || text2.length >= 20) 90 else 125


private fun drawTextToBitmap(context: Context, gResId: Int, textSize: Int = 78, text1: String, text2: String): Bitmap {
    val resources = context.resources
    val scale = resources.displayMetrics.density
    var bitmap = BitmapFactory.decodeResource(resources, gResId)

    var bitmapConfig = bitmap.config;
    // set default bitmap config if none
    if (bitmapConfig == null) {
        bitmapConfig = android.graphics.Bitmap.Config.ARGB_8888
    }
    // resource bitmaps are imutable,
    // so we need to convert it to mutable one
    bitmap = bitmap.copy(bitmapConfig, true)

    val canvas = Canvas(bitmap)
    // new antialised Paint
    val paint = Paint(Paint.ANTI_ALIAS_FLAG)
    paint.color = Color.rgb(93, 101, 67)
    // text size in pixels
    paint.textSize = (textSize * scale).roundToInt().toFloat()
    //custom fonts
    val fontFace = ResourcesCompat.getFont(context, R.font.acrobat)
    paint.typeface = Typeface.create(fontFace, Typeface.NORMAL)
    // text shadow
    paint.setShadowLayer(1f, 0f, 1f, Color.WHITE)

    // draw text to the Canvas center
    val bounds = Rect()
    //draw the first text
    paint.getTextBounds(text1, 0, text1.length, bounds)
    var x = (bitmap.width - bounds.width()) / 2f - 470
    var y = (bitmap.height + bounds.height()) / 2f - 140
    canvas.drawText(text1, x, y, paint)
    //draw the second text
    paint.getTextBounds(text2, 0, text2.length, bounds)
    x = (bitmap.width - bounds.width()) / 2f - 470
    y = (bitmap.height + bounds.height()) / 2f + 235
    canvas.drawText(text2, x, y, paint)

    return bitmap
}

After that I tested my application and I get exception:

java.lang.RuntimeException: Canvas: trying to draw too large(136676736bytes) bitmap.

For example, it’s not worth loading a 1024x768 pixel image into memory if it will eventually be displayed in a 128x96 pixel thumbnail in an ImageView. To solve this should read this documentation. But I didn’t need display in the ImageView, because I send the bitmap to a SDK.

The result:

Thus I could created the image for posting in social network (vk.com).

Google play: https://play.google.com/store/apps/details?id=ru.a1024bits.bytheway.release