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How to change alpha color object?

Anonymous User168507-Nov-2014
Is there a way to add aplha to color that i can get from a color string. Because now i can draw my color without the alpha by using the following code

CircleOptions options = new CircleOptions().center(new LatLng(car.getLatitude(), car.getLongitude()))
.radius(car.getRadius())
.strokeColor(Color.argb(50, 232, 245, 248))
.strokeWidth(2)
.fillColor(Color.parseColor(car.getColorString()));

This works fine. But i want to make the color more transparent. Is there a good way to add alpha do this color because i can only get out a "ColorString"

androidjava 
Updated on 07-Nov-2014
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1 Answers

Anonymous User

Anonymous User

07-Nov-2014
Color is represented as a int and you can represent it with hex notation like 0xAARRGGBB, which means Alpha, Red, Green, Blue. So each value can be 0 to 255.

Thus, what you want can be achieved with some bit operations.

If you want reset alpha value then,

int newColor = 0x10000000 | (Color.parseColor(car.getColorString()) & 0xFFFFFF);
(0x10000000 means new alpha value - 16 which is about 6.274% alpha because 100% is 255)
(0xFFFFFF means we take only rgb value from a color)

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