Android中app獲取隨機顏色方法詳細

// get rand color
public static String getRandColorCode() {
    String r,g,b;
    Random random = new Random();
    r = Integer.toHexString(random.nextInt(256)).toUpperCase();
    g = Integer.toHexString(random.nextInt(256)).toUpperCase();
    b = Integer.toHexString(random.nextInt(256)).toUpperCase();

    r = r.length() == 1 ? "0" + r : r ;
    g = g.length() == 1 ? "0" + g : g ;
    b = b.length() == 1 ? "0" + b : b ;

    return r + g + b;
}