1.原理
主要是调用了toHexString(将int类型转为16进制字符串)、parseInt(将字符串解析为int)这两个方法。
2.代码
public static void main(String[] args) { String hexString = colorToHexValue(Color.RED); System.out.println("16进制字符串:" + hexString); Color color = fromStrToARGB(hexString); System.out.println("16进制字符串转为颜色的ARGB值:("+String.valueOf(color.getAlpha())+","+String.valueOf(color.getRed())+"," +String.valueOf(color.getGreen())+","+String.valueOf(color.getBlue())+")"); } private static String colorToHexValue(Color color) { return intToHexValue(color.getAlpha()) + intToHexValue(color.getRed()) + intToHexValue(color.getGreen()) + intToHexValue(color.getBlue()); } private static String intToHexValue(int number) { String result = Integer.toHexString(number & 0xff); while (result.length() < 2) { result = "0" + result; } return result.toUpperCase(); } private static Color fromStrToARGB(String str) { String str1 = str.substring(0, 2); String str2 = str.substring(2, 4); String str3 = str.substring(4, 6); String str4 = str.substring(6, 8); int alpha = Integer.parseInt(str1, 16); int red = Integer.parseInt(str2, 16); int green = Integer.parseInt(str3, 16); int blue = Integer.parseInt(str4, 16); Color color = new Color(red, green, blue, alpha); return color; }