android canvas color fade background code example
Example: set gradient color for android paint
paint.setShader(new LinearGradient(0, 0, 0, getHeight(), Color.BLACK, Color.WHITE, Shader.TileMode.MIRROR));
canvas.drawPath(arrowPath, paint);
paint.setShader(new LinearGradient(0, 0, 0, getHeight(), Color.BLACK, Color.WHITE, Shader.TileMode.MIRROR));
canvas.drawPath(arrowPath, paint);