从预制列表中随机选择一种颜色

Question

I want to randomly select a color from a premade list of colors and I'm not sure how to go about it. Something like this:

String[] randomColor = {"BLUE", "GREEN", "CYAN",
        "RED", "YELLOW", "MAGENTA", "PINK"};
x = (Math.random() * 6)
graphics.setColor(Color.x);

Answer 1

Use Random.nextInt(6) instead. But this won't work the way you want. You can't reference an object using the string name. You will need to put the Color object inside a Color array: Color[]

   Color[] colors = { Color.red, Color.blue, Color.white, Color.cyan, 
                      Color.green, Color.gray, new Color(0xFFAA00) };
   Random random = new Random();
   int x = random.nextInt(colors.length);
   graphics.setColor(colors[x]);

Answer 2

你可以试试这个

randomColor[new Random().nextInt(randomColor.length)]