项目开发中，在写布局的时候经常会涉及到设置透明度的问题，提供的高保图也用百分比标注。
Android的透明度在alpha为0~1
例如Dialog.getWindow().setDimAmount(0.6f)//其中0.6为透明度值，也是0~1
但在xml中则是用16进制表示，例如#00000000，前2位表示透明度，
后面6位表示颜色值。
把颜色透明度比例对应十六进制值列出来，方便查询：
程序实现：
1 /**
2 * 颜色透明度比例对应十六进制值
3 */
4public static void toHex() {
5 for (int i = 0; i <= 100; i++) {
6 int round = Math.round(255 * i * 1.0f / 100f);
7 String result = Integer.toHexString(round);
8 if (result.length() < 2) {
9 result += "0";
10 }
11 System.out.println("百分比:" + i + "%" + " 数值: "
12 + result.toUpperCase());
13 }
14}
列表：
| 不透明度 | 16进制 |
|---|---|
| 0% | 00 |
| 1% | 30 |
| 2% | 50 |
| 3% | 80 |
| 4% | A0 |
| 5% | D0 |
| 6% | F0 |
| 7% | 12 |
| 8% | 14 |
| 9% | 17 |
| 10% | 1A |
| 11% | 1C |
| 12% | 1F |
| 13% | 21 |
| 14% | 24 |
| 15% | 26 |
| 16% | 29 |
| 17% | 2B |
| 18% | 2E |
| 19% | 30 |
| 20% | 33 |
| 21% | 36 |
| 22% | 38 |
| 23% | 3B |
| 24% | 3D |
| 25% | 40 |
| 26% | 42 |
| 27% | 45 |
| 28% | 47 |
| 29% | 4A |
| 30% | 4D |
| 31% | 4F |
| 32% | 52 |
| 33% | 54 |
| 34% | 57 |
| 35% | 59 |
| 36% | 5C |
| 37% | 5E |
| 38% | 61 |
| 39% | 63 |
| 40% | 66 |
| 41% | 69 |
| 42% | 6B |
| 43% | 6E |
| 44% | 70 |
| 45% | 73 |
| 46% | 75 |
| 47% | 78 |
| 48% | 7A |
| 49% | 7D |
| 50% | 80 |
| 51% | 82 |
| 52% | 85 |
| 53% | 87 |
| 54% | 8A |
| 55% | 8C |
| 56% | 8F |
| 57% | 91 |
| 58% | 94 |
| 59% | 96 |
| 60% | 99 |
| 61% | 9C |
| 62% | 9E |
| 63% | A1 |
| 64% | A3 |
| 65% | A6 |
| 66% | A8 |
| 67% | AB |
| 68% | AD |
| 69% | B0 |
| 70% | B3 |
| 71% | B5 |
| 72% | B8 |
| 73% | BA |
| 74% | BD |
| 75% | BF |
| 76% | C2 |
| 77% | C4 |
| 78% | C7 |
| 79% | C9 |
| 80% | CC |
| 81% | CF |
| 82% | D1 |
| 83% | D4 |
| 84% | D6 |
| 85% | D9 |
| 86% | DB |
| 87% | DE |
| 88% | E0 |
| 89% | E3 |
| 90% | E6 |
| 91% | E8 |
| 92% | EB |
| 93% | ED |
| 94% | F0 |
| 95% | F2 |
| 96% | F5 |
| 97% | F7 |
| 98% | FA |
| 99% | FC |
| 100% | FF |
