Android颜色值（#AARRGGBB）透明度百分比和十六进制对应关系以及计算方法

透明度十六进制

100%FF

99%FC

98%FA

97%F7

96%F5

95%F2

94%F0

93%ED

92%EB

91%E8

90%E6

89%E3

88%E0

87%DE

86%DB

85%D9

84%D6

83%D4

82%D1

81%CF

80%CC

79%C9

78%C7

77%C4

76%C2

75%BF

74%BD

73%BA

72%B8

71%B5

70%B3

69%B0

68%AD

67%AB

66%A8

65%A6

64%A3

63%A1

62%9E

61%9C

60%99

59%96

57%94

56%91

56%8F

55%8C

54%8A

53%87

52%85

51%82

50%80

49%7D

48%7A

47%78

46%75

45%73

44%70

43%6E

42%6B

41%69

40%66

39%63

38%61

37%5E

36%5C

35%59

34%57

33%54

32%52

31%4F

30%4D

28%4A

28%47

27%45

26%42

25%40

24%3D

23%3B

22%38

21%36

20%33

19%30

18%2E

17%2B

16%29

15%26

14%24

13%21

12%1F

11%1C

10%1A

9%17

8%14

7%12

6%0F

5%0D

4%0A

3%08

2%05

1%03

0%00

//计算方式

public void switch() throws Exception {

        for (double i = 1; i >= 0; i -= 0.01) {

            i = Math.round(i * 100) / 100.0d;

            int alpha = (int) Math.round(i * 255);

            String hex = Integer.toHexString(alpha).toUpperCase();

            if (hex.length() == 1) hex = "0" + hex;

            int percent = (int) (i * 100);

            System.out.println(String.format("%d%% | %s", percent, hex));

        }

}