Question

So i’m having a problem with using decimal colors in android.

I’m getting color codes from an external database.

For Example:

• 16777215 is white
• 16711680 is red

Now I want to use this colors to create a GradientDrawable.

int color = myDbReader.getColor(); //returns the decimal color code
new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[] {color, 0 });

The code example produces always a completley white gradient object.

I tried to google how to convert the decimal colors in the right way.. But i didn’t find anything.

Can anyone give me a hint how to use the decimal colors in the right way?

Answer 1

So based on your suggestions I spent last night with reading about the different types of Color codes and finally found the solution:

The given numbers are access color codes so i only have to:

int color = myDbReader.getColor(); //returns the decimal color code
gradient = new GradientDrawable(GradientDrawable.Orientation.LEFT_RIGHT, new int[] {Color.rgb((value/256/256)%256, (value/256)%256, value%256), 0 });

Thanks four your help!