CODEWITHSUNDEEP
android
Karl Jamoralin
Karl Jamoralin

Reputation: 1260

Changing Notification icons dynamically

I want the Notification icon to be a number that can be anywhere from 1 to 1000 depending on conditions.

Is there a way to do this dynamically (e.g. generate an Icon from a String and use it in setSmallIcon()) without manually creating all these numbers as an image file and calling them dynamically?

Upvotes: 0

Views: 263

Answers (1)

earthw0rmjim
earthw0rmjim

Reputation: 19427

Unfortunately there is no way (i'm aware of) to do this below API level 23.

On API level 23+:

You could use Canvas.drawText() to create a Bitmap from your String.

For example:

public Bitmap createBitmapFromString(String string) {
    Paint paint = new Paint();
    paint.setAntiAlias(true);
    paint.setTextSize(50); // size is in pixels

    Rect textBounds = new Rect();
    paint.getTextBounds(string, 0, string.length(), textBounds);

    Bitmap bitmap = Bitmap.createBitmap(textBounds.width(), textBounds.height(),
        Bitmap.Config.ARGB_8888);

    Canvas canvas = new Canvas(bitmap);
    canvas.drawText(string, -textBounds.left,
        textBounds.height() - textBounds.bottom, paint);

    return bitmap;
}

After that you could create an Icon using this Bitmap with Icon.createWithBitmap().

(this method was added in API level 23)

And then pass this Icon to setSmallIcon().

(setSmallIcon(Icon icon) was also added in API level 23)

Upvotes: 1

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