android 颜色、 透明度参考表

####1、透明度颜色
tx.setTextColor(android.graphics.Color.RED);
tv.setTextColor(0xffff00ff);
tx_view.setTextColor(getColor(R.color.green));

0xffff00ff是int类型的数据，分组一下0x|ff|ff00ff，0x是代表颜色整数的标记，ff是表示透明度，ff00ff表示颜色，

注意：这里ffff00ff必须是8个的颜色表示，不接受ff00ff这种6个的颜色表示。

####2、常见透明度
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

计算程序

public class ToHex { 
	public static void main(String[] args) { 
	System.out.println("透明度百分比对应的十六进制:"); 
	for (int i = 0; i <= 100; i++) { 
		float temp=255*i*1.0f/100f; int round = Math.round(temp);//四舍五入
	        String hexString = Integer.toHexString(round); 
	        if (hexString.length()<2) { 
	        hexString+="0"; 
	        } 
	        System.out.println(" 百分比:"+i+"%"+" HEX: "+hexString.toUpperCase());
	    } 
	}
}

####3、常见RGB的值

文件参考：
1、Android中颜色透明度对应16进制值
http://blog.csdn.net/github_25928675/article/details/50330635
2、Android 透明度百分比对应的 十六进制
https://www.jianshu.com/p/6b89c463db4c