I want to make a notification icon with text over it, to show for example the percent battery remaining. Is there a way to do that that doesn't involve 100+ separate icons?
I've looked all over but couldn't find a way.
Thanks
2 Answers
100+ separate icons unfortunately. Because of security reasons android only accepts resource IDs that also must not be custom resource type.
Would be happy to know if I'm wrong though.
3 Comments
yedidyak
Ok then, next question: Is there any way of quickly generating 100 similar icons?
aragaer
That's where you can use android canvases and save bitmaps to file. In a separate application of course.
Luis A. Florit
No news for this for the modern age (2022)?
You can draw a bitmap using this function
fun createTemperatureBitmap(context: Context, temperature: String): Bitmap { val size = 48 val scale = context.resources.displayMetrics.density val bitmap = Bitmap.createBitmap((size * scale).toInt(), (size * scale).toInt(), Bitmap.Config.ARGB_8888) val canvas = Canvas(bitmap) val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply { color = Color.WHITE textSize = 24 * scale textAlign = Paint.Align.CENTER } val x = bitmap.width / 2f val y = bitmap.height / 2f - (paint.descent() + paint.ascent()) / 2 canvas.drawText(temperature, x, y, paint) return bitmap } To add it as an icon, you must use
val iconBitmap = createTemperatureBitmap(context, temperature) and
.setSmallIcon(IconCompat.createWithBitmap(iconBitmap)) *Only for api M and higher
