Как получить случайный цвет материала?

У Google есть свои рекомендации по цвету , так как случайным образом получать цвет? Есть ли способ указать число из таблицы и получить случайный цвет из всех цветов таблицы?

Например, getMatColor(100); :

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EDIT – Результат: (цвета значков)

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Solutions Collecting From Web of "Как получить случайный цвет материала?"

Лучше поздно, чем никогда.

Мой новый ответ, если реальная цель – получить случайный цвет материала для типа цвета.

Добавьте файл array.xml (из @ 8m47x)

 <?xml version="1.0" encoding="utf-8"?> <resources> <array name="mdcolor_50"> <item name="red_50" type="color">#fde0dc</item> <item name="pink_50" type="color">#fce4ec</item> <item name="purple_50" type="color">#f3e5f5</item> <item name="deep_purple_50" type="color">#ede7f6</item> <item name="indigo_50" type="color">#e8eaf6</item> <item name="blue_50" type="color">#e7e9fd</item> <item name="light_blue_50" type="color">#e1f5fe</item> <item name="cyan_50" type="color">#e0f7fa</item> <item name="teal_50" type="color">#e0f2f1</item> <item name="green_50" type="color">#d0f8ce</item> <item name="light_green_50" type="color">#f1f8e9</item> <item name="lime_50" type="color">#f9fbe7</item> <item name="yellow_50" type="color">#fffde7</item> <item name="amber_50" type="color">#fff8e1</item> <item name="orange_50" type="color">#fff3e0</item> <item name="deep_orange_50" type="color">#fbe9e7</item> <item name="brown_50" type="color">#efebe9</item> <item name="grey_50" type="color">#fafafa</item> <item name="blue_grey_50" type="color">#eceff1</item> </array> <array name="mdcolor_100"> <item name="red_100" type="color">#f9bdbb</item> <item name="pink_100" type="color">#f8bbd0</item> <item name="purple_100" type="color">#e1bee7</item> <item name="deep_purple_100" type="color">#d1c4e9</item> <item name="indigo_100" type="color">#c5cae9</item> <item name="blue_100" type="color">#d0d9ff</item> <item name="light_blue_100" type="color">#b3e5fc</item> <item name="cyan_100" type="color">#b2ebf2</item> <item name="teal_100" type="color">#b2dfdb</item> <item name="green_100" type="color">#a3e9a4</item> <item name="light_green_100" type="color">#dcedc8</item> <item name="lime_100" type="color">#f0f4c3</item> <item name="yellow_100" type="color">#fff9c4</item> <item name="amber_100" type="color">#ffecb3</item> <item name="orange_100" type="color">#ffe0b2</item> <item name="deep_orange_100" type="color">#ffccbc</item> <item name="brown_100" type="color">#d7ccc8</item> <item name="grey_100" type="color">#f5f5f5</item> <item name="blue_grey_100" type="color">#cfd8dc</item> </array> <array name="mdcolor_200"> <item name="red_200" type="color">#f69988</item> <item name="pink_200" type="color">#f48fb1</item> <item name="purple_200" type="color">#ce93d8</item> <item name="deep_purple_200" type="color">#b39ddb</item> <item name="indigo_200" type="color">#9fa8da</item> <item name="blue_200" type="color">#afbfff</item> <item name="light_blue_200" type="color">#81d4fa</item> <item name="cyan_200" type="color">#80deea</item> <item name="teal_200" type="color">#80cbc4</item> <item name="green_200" type="color">#72d572</item> <item name="light_green_200" type="color">#c5e1a5</item> <item name="lime_200" type="color">#e6ee9c</item> <item name="yellow_200" type="color">#fff59d</item> <item name="orange_200" type="color">#ffcc80</item> <item name="deep_orange_200" type="color">#ffab91</item> <item name="brown_200" type="color">#bcaaa4</item> <item name="grey_200" type="color">#eeeeee</item> <item name="blue_grey_200" type="color">#b0bec5</item> </array> <array name="mdcolor_300"> <item name="red_300" type="color">#f36c60</item> <item name="pink_300" type="color">#f06292</item> <item name="purple_300" type="color">#ba68c8</item> <item name="deep_purple_300" type="color">#9575cd</item> <item name="indigo_300" type="color">#7986cb</item> <item name="blue_300" type="color">#91a7ff</item> <item name="light_blue_300" type="color">#4fc3f7</item> <item name="cyan_300" type="color">#4dd0e1</item> <item name="teal_300" type="color">#4db6ac</item> <item name="green_300" type="color">#42bd41</item> <item name="light_green_300" type="color">#aed581</item> <item name="lime_300" type="color">#dce775</item> <item name="yellow_300" type="color">#fff176</item> <item name="orange_300" type="color">#ffb74d</item> <item name="deep_orange_300" type="color">#ff8a65</item> <item name="brown_300" type="color">#a1887f</item> <item name="grey_300" type="color">#e0e0e0</item> <item name="blue_grey_300" type="color">#90a4ae</item> </array> <array name="mdcolor_400"> <item name="red_400" type="color">#e84e40</item> <item name="pink_400" type="color">#ec407a</item> <item name="purple_400" type="color">#ab47bc</item> <item name="deep_purple_400" type="color">#7e57c2</item> <item name="indigo_400" type="color">#5c6bc0</item> <item name="blue_400" type="color">#738ffe</item> <item name="light_blue_400" type="color">#29b6f6</item> <item name="cyan_400" type="color">#26c6da</item> <item name="teal_400" type="color">#26a69a</item> <item name="green_400" type="color">#2baf2b</item> <item name="light_green_400" type="color">#9ccc65</item> <item name="lime_400" type="color">#d4e157</item> <item name="yellow_400" type="color">#ffee58</item> <item name="orange_400" type="color">#ffa726</item> <item name="deep_orange_400" type="color">#ff7043</item> <item name="brown_400" type="color">#8d6e63</item> <item name="grey_400" type="color">#bdbdbd</item> <item name="blue_grey_400" type="color">#78909c</item> </array> <array name="mdcolor_500"> <item name="red_500" type="color">#e51c23</item> <item name="pink_500" type="color">#e91e63</item> <item name="purple_500" type="color">#9c27b0</item> <item name="deep_purple_500" type="color">#673ab7</item> <item name="indigo_500" type="color">#3f51b5</item> <item name="blue_500" type="color">#5677fc</item> <item name="light_blue_500" type="color">#03a9f4</item> <item name="cyan_500" type="color">#00bcd4</item> <item name="teal_500" type="color">#009688</item> <item name="green_500" type="color">#259b24</item> <item name="light_green_500" type="color">#8bc34a</item> <item name="lime_500" type="color">#cddc39</item> <item name="yellow_500" type="color">#ffeb3b</item> <item name="orange_500" type="color">#ff9800</item> <item name="deep_orange_500" type="color">#ff5722</item> <item name="brown_500" type="color">#795548</item> <item name="grey_500" type="color">#9e9e9e</item> <item name="blue_grey_500" type="color">#607d8b</item> </array> <array name="mdcolor_600"> <item name="red_600" type="color">#dd191d</item> <item name="pink_600" type="color">#d81b60</item> <item name="purple_600" type="color">#8e24aa</item> <item name="deep_purple_600" type="color">#5e35b1</item> <item name="indigo_600" type="color">#3949ab</item> <item name="blue_600" type="color">#4e6cef</item> <item name="light_blue_600" type="color">#039be5</item> <item name="cyan_600" type="color">#00acc1</item> <item name="teal_600" type="color">#00897b</item> <item name="green_600" type="color">#0a8f08</item> <item name="light_green_600" type="color">#7cb342</item> <item name="lime_600" type="color">#c0ca33</item> <item name="yellow_600" type="color">#fdd835</item> <item name="orange_600" type="color">#fb8c00</item> <item name="deep_orange_600" type="color">#f4511e</item> <item name="brown_600" type="color">#6d4c41</item> <item name="grey_600" type="color">#757575</item> <item name="blue_grey_600" type="color">#546e7a</item> </array> <array name="mdcolor_700"> <item name="red_700" type="color">#d01716</item> <item name="pink_700" type="color">#c2185b</item> <item name="purple_700" type="color">#7b1fa2</item> <item name="deep_purple_700" type="color">#512da8</item> <item name="indigo_700" type="color">#303f9f</item> <item name="blue_700" type="color">#455ede</item> <item name="light_blue_700" type="color">#0288d1</item> <item name="cyan_700" type="color">#0097a7</item> <item name="teal_700" type="color">#00796b</item> <item name="green_700" type="color">#0a7e07</item> <item name="light_green_700" type="color">#689f38</item> <item name="lime_700" type="color">#afb42b</item> <item name="yellow_700" type="color">#fbc02d</item> <item name="orange_700" type="color">#f57c00</item> <item name="deep_orange_700" type="color">#e64a19</item> <item name="brown_700" type="color">#5d4037</item> <item name="grey_700" type="color">#616161</item> <item name="blue_grey_700" type="color">#455a64</item> </array> <array name="mdcolor_800"> <item name="red_800" type="color">#c41411</item> <item name="pink_800" type="color">#ad1457</item> <item name="purple_800" type="color">#6a1b9a</item> <item name="deep_purple_800" type="color">#4527a0</item> <item name="indigo_800" type="color">#283593</item> <item name="blue_800" type="color">#3b50ce</item> <item name="light_blue_800" type="color">#0277bd</item> <item name="cyan_800" type="color">#00838f</item> <item name="teal_800" type="color">#00695c</item> <item name="green_800" type="color">#056f00</item> <item name="light_green_800" type="color">#558b2f</item> <item name="lime_800" type="color">#9e9d24</item> <item name="yellow_800" type="color">#f9a825</item> <item name="orange_800" type="color">#ef6c00</item> <item name="deep_orange_800" type="color">#d84315</item> <item name="brown_800" type="color">#4e342e</item> <item name="grey_800" type="color">#424242</item> <item name="blue_grey_800" type="color">#37474f</item> </array> <array name="mdcolor_900"> <item name="red_900" type="color">#b0120a</item> <item name="pink_900" type="color">#880e4f</item> <item name="purple_900" type="color">#4a148c</item> <item name="deep_purple_900" type="color">#311b92</item> <item name="indigo_900" type="color">#1a237e</item> <item name="blue_900" type="color">#2a36b1</item> <item name="light_blue_900" type="color">#01579b</item> <item name="cyan_900" type="color">#006064</item> <item name="teal_900" type="color">#004d40</item> <item name="green_900" type="color">#0d5302</item> <item name="light_green_900" type="color">#33691e</item> <item name="lime_900" type="color">#827717</item> <item name="yellow_900" type="color">#f57f17</item> <item name="orange_900" type="color">#e65100</item> <item name="deep_orange_900" type="color">#bf360c</item> <item name="brown_900" type="color">#3e2723</item> <item name="grey_900" type="color">#212121</item> <item name="blue_grey_900" type="color">#263238</item> </array> <array name="mdcolor_A100"> <item name="red_A100" type="color">#ff7997</item> <item name="pink_A100" type="color">#ff80ab</item> <item name="purple_A100" type="color">#ea80fc</item> <item name="deep_purple_A100" type="color">#b388ff</item> <item name="indigo_A100" type="color">#8c9eff</item> <item name="blue_A100" type="color">#a6baff</item> <item name="light_blue_A100" type="color">#80d8ff</item> <item name="cyan_A100" type="color">#84ffff</item> <item name="teal_A100" type="color">#a7ffeb</item> <item name="green_A100" type="color">#a2f78d</item> <item name="light_green_A100" type="color">#ccff90</item> <item name="lime_A100" type="color">#f4ff81</item> <item name="yellow_A100" type="color">#ffff8d</item> <item name="orange_A100" type="color">#ffd180</item> <item name="deep_orange_A100" type="color">#ff9e80</item> </array> <array name="mdcolor_A200"> <item name="red_A200" type="color">#ff5177</item> <item name="pink_A200" type="color">#ff4081</item> <item name="purple_A200" type="color">#e040fb</item> <item name="deep_purple_A200" type="color">#7c4dff</item> <item name="indigo_A200" type="color">#536dfe</item> <item name="blue_A200" type="color">#6889ff</item> <item name="light_blue_A200" type="color">#40c4ff</item> <item name="cyan_A200" type="color">#18ffff</item> <item name="teal_A200" type="color">#64ffda</item> <item name="green_A200" type="color">#5af158</item> <item name="light_green_A200" type="color">#b2ff59</item> <item name="lime_A200" type="color">#eeff41</item> <item name="yellow_A200" type="color">#ffff00</item> <item name="orange_A200" type="color">#ffab40</item> <item name="deep_orange_A200" type="color">#ff6e40</item> </array> <array name="mdcolor_A400"> <item name="red_A400" type="color">#ff2d6f</item> <item name="pink_A400" type="color">#f50057</item> <item name="purple_A400" type="color">#d500f9</item> <item name="deep_purple_A400" type="color">#651fff</item> <item name="indigo_A400" type="color">#3d5afe</item> <item name="blue_A400" type="color">#4d73ff</item> <item name="light_blue_A400" type="color">#00b0ff</item> <item name="cyan_A400" type="color">#00e5ff</item> <item name="teal_A400" type="color">#1de9b6</item> <item name="green_A400" type="color">#14e715</item> <item name="light_green_A400" type="color">#76ff03</item> <item name="lime_A400" type="color">#c6ff00</item> <item name="yellow_A400" type="color">#ffea00</item> <item name="orange_A400" type="color">#ff9100</item> <item name="deep_orange_A400" type="color">#ff3d00</item> </array> <array name="mdcolor_A700"> <item name="red_A700" type="color">#e00032</item> <item name="pink_A700" type="color">#c51162</item> <item name="purple_A700" type="color">#aa00ff</item> <item name="deep_purple_A700" type="color">#6200ea</item> <item name="indigo_A700" type="color">#304ffe</item> <item name="blue_A700" type="color">#4d69ff</item> <item name="light_blue_A700" type="color">#0091ea</item> <item name="cyan_A700" type="color">#00b8d4</item> <item name="teal_A700" type="color">#00bfa5</item> <item name="green_A700" type="color">#12c700</item> <item name="light_green_A700" type="color">#64dd17</item> <item name="lime_A700" type="color">#aeea00</item> <item name="yellow_A700" type="color">#ffd600</item> <item name="orange_A700" type="color">#ff6d00</item> <item name="deep_orange_A700" type="color">#dd2c00</item> </array> <array name="extra"> <item name="grey_1000b" type="color">#000000</item> <item name="grey_1000w" type="color">#ffffff</item> </array> </resources> 

Добавьте следующий метод для выбора случайного цвета из родительского типа

 private int getMatColor(String typeColor) { int returnColor = Color.BLACK; int arrayId = getResources().getIdentifier("mdcolor_" + typeColor, "array", getApplicationContext().getPackageName()); if (arrayId != 0) { TypedArray colors = getResources().obtainTypedArray(arrayId); int index = (int) (Math.random() * colors.length()); returnColor = colors.getColor(index, Color.BLACK); colors.recycle(); } return returnColor; } 

Применение

 txt.setTextColor(getMatColor("500")); 

Если вы хотите что-то работать со старым SDK, вы можете попробовать:

 TypedArray colors = getResources().obtainTypedArray(R.array.loading_colors); int index = (int) (Math.random() * colors .length()); int color = colors.getColor(index, Color.BLACK); textView.setTextColor(color); colors.recycle(); 

Вам нужно объявить свои цвета в файле arrays.xml:

 <?xml version="1.0" encoding="utf-8"?> <resources> <array name="loading_colors"> <item name="red_50" type="color">#fde0dc</item> <item name="red_100" type="color">#f9bdbb</item> <item name="red_200" type="color">#f69988</item> <item name="red_300" type="color">#f36c60</item> <item name="red_400" type="color">#e84e40</item> <item name="red_500" type="color">#e51c23</item> <item name="red_600" type="color">#dd191d</item> <item name="red_700" type="color">#d01716</item> <item name="red_800" type="color">#c41411</item> <item name="red_900" type="color">#b0120a</item> <item name="red_A100" type="color">#ff7997</item> <item name="red_A200" type="color">#ff5177</item> <item name="red_A400" type="color">#ff2d6f</item> <item name="red_A700" type="color">#e00032</item> <item name="pink_50" type="color">#fce4ec</item> <item name="pink_100" type="color">#f8bbd0</item> <item name="pink_200" type="color">#f48fb1</item> <item name="pink_300" type="color">#f06292</item> <item name="pink_400" type="color">#ec407a</item> <item name="pink_500" type="color">#e91e63</item> <item name="pink_600" type="color">#d81b60</item> <item name="pink_700" type="color">#c2185b</item> <item name="pink_800" type="color">#ad1457</item> <item name="pink_900" type="color">#880e4f</item> <item name="pink_A100" type="color">#ff80ab</item> <item name="pink_A200" type="color">#ff4081</item> <item name="pink_A400" type="color">#f50057</item> <item name="pink_A700" type="color">#c51162</item> <item name="purple_50" type="color">#f3e5f5</item> <item name="purple_100" type="color">#e1bee7</item> <item name="purple_200" type="color">#ce93d8</item> <item name="purple_300" type="color">#ba68c8</item> <item name="purple_400" type="color">#ab47bc</item> <item name="purple_500" type="color">#9c27b0</item> <item name="purple_600" type="color">#8e24aa</item> <item name="purple_700" type="color">#7b1fa2</item> <item name="purple_800" type="color">#6a1b9a</item> <item name="purple_900" type="color">#4a148c</item> <item name="purple_A100" type="color">#ea80fc</item> <item name="purple_A200" type="color">#e040fb</item> <item name="purple_A400" type="color">#d500f9</item> <item name="purple_A700" type="color">#aa00ff</item> <item name="deep_purple_50" type="color">#ede7f6</item> <item name="deep_purple_100" type="color">#d1c4e9</item> <item name="deep_purple_200" type="color">#b39ddb</item> <item name="deep_purple_300" type="color">#9575cd</item> <item name="deep_purple_400" type="color">#7e57c2</item> <item name="deep_purple_500" type="color">#673ab7</item> <item name="deep_purple_600" type="color">#5e35b1</item> <item name="deep_purple_700" type="color">#512da8</item> <item name="deep_purple_800" type="color">#4527a0</item> <item name="deep_purple_900" type="color">#311b92</item> <item name="deep_purple_A100" type="color">#b388ff</item> <item name="deep_purple_A200" type="color">#7c4dff</item> <item name="deep_purple_A400" type="color">#651fff</item> <item name="deep_purple_A700" type="color">#6200ea</item> <item name="indigo_50" type="color">#e8eaf6</item> <item name="indigo_100" type="color">#c5cae9</item> <item name="indigo_200" type="color">#9fa8da</item> <item name="indigo_300" type="color">#7986cb</item> <item name="indigo_400" type="color">#5c6bc0</item> <item name="indigo_500" type="color">#3f51b5</item> <item name="indigo_600" type="color">#3949ab</item> <item name="indigo_700" type="color">#303f9f</item> <item name="indigo_800" type="color">#283593</item> <item name="indigo_900" type="color">#1a237e</item> <item name="indigo_A100" type="color">#8c9eff</item> <item name="indigo_A200" type="color">#536dfe</item> <item name="indigo_A400" type="color">#3d5afe</item> <item name="indigo_A700" type="color">#304ffe</item> <item name="blue_50" type="color">#e7e9fd</item> <item name="blue_100" type="color">#d0d9ff</item> <item name="blue_200" type="color">#afbfff</item> <item name="blue_300" type="color">#91a7ff</item> <item name="blue_400" type="color">#738ffe</item> <item name="blue_500" type="color">#5677fc</item> <item name="blue_600" type="color">#4e6cef</item> <item name="blue_700" type="color">#455ede</item> <item name="blue_800" type="color">#3b50ce</item> <item name="blue_900" type="color">#2a36b1</item> <item name="blue_A100" type="color">#a6baff</item> <item name="blue_A200" type="color">#6889ff</item> <item name="blue_A400" type="color">#4d73ff</item> <item name="blue_A700" type="color">#4d69ff</item> <item name="light_blue_50" type="color">#e1f5fe</item> <item name="light_blue_100" type="color">#b3e5fc</item> <item name="light_blue_200" type="color">#81d4fa</item> <item name="light_blue_300" type="color">#4fc3f7</item> <item name="light_blue_400" type="color">#29b6f6</item> <item name="light_blue_500" type="color">#03a9f4</item> <item name="light_blue_600" type="color">#039be5</item> <item name="light_blue_700" type="color">#0288d1</item> <item name="light_blue_800" type="color">#0277bd</item> <item name="light_blue_900" type="color">#01579b</item> <item name="light_blue_A100" type="color">#80d8ff</item> <item name="light_blue_A200" type="color">#40c4ff</item> <item name="light_blue_A400" type="color">#00b0ff</item> <item name="light_blue_A700" type="color">#0091ea</item> <item name="cyan_50" type="color">#e0f7fa</item> <item name="cyan_100" type="color">#b2ebf2</item> <item name="cyan_200" type="color">#80deea</item> <item name="cyan_300" type="color">#4dd0e1</item> <item name="cyan_400" type="color">#26c6da</item> <item name="cyan_500" type="color">#00bcd4</item> <item name="cyan_600" type="color">#00acc1</item> <item name="cyan_700" type="color">#0097a7</item> <item name="cyan_800" type="color">#00838f</item> <item name="cyan_900" type="color">#006064</item> <item name="cyan_A100" type="color">#84ffff</item> <item name="cyan_A200" type="color">#18ffff</item> <item name="cyan_A400" type="color">#00e5ff</item> <item name="cyan_A700" type="color">#00b8d4</item> <item name="teal_50" type="color">#e0f2f1</item> <item name="teal_100" type="color">#b2dfdb</item> <item name="teal_200" type="color">#80cbc4</item> <item name="teal_300" type="color">#4db6ac</item> <item name="teal_400" type="color">#26a69a</item> <item name="teal_500" type="color">#009688</item> <item name="teal_600" type="color">#00897b</item> <item name="teal_700" type="color">#00796b</item> <item name="teal_800" type="color">#00695c</item> <item name="teal_900" type="color">#004d40</item> <item name="teal_A100" type="color">#a7ffeb</item> <item name="teal_A200" type="color">#64ffda</item> <item name="teal_A400" type="color">#1de9b6</item> <item name="teal_A700" type="color">#00bfa5</item> <item name="green_50" type="color">#d0f8ce</item> <item name="green_100" type="color">#a3e9a4</item> <item name="green_200" type="color">#72d572</item> <item name="green_300" type="color">#42bd41</item> <item name="green_400" type="color">#2baf2b</item> <item name="green_500" type="color">#259b24</item> <item name="green_600" type="color">#0a8f08</item> <item name="green_700" type="color">#0a7e07</item> <item name="green_800" type="color">#056f00</item> <item name="green_900" type="color">#0d5302</item> <item name="green_A100" type="color">#a2f78d</item> <item name="green_A200" type="color">#5af158</item> <item name="green_A400" type="color">#14e715</item> <item name="green_A700" type="color">#12c700</item> <item name="light_green_50" type="color">#f1f8e9</item> <item name="light_green_100" type="color">#dcedc8</item> <item name="light_green_200" type="color">#c5e1a5</item> <item name="light_green_300" type="color">#aed581</item> <item name="light_green_400" type="color">#9ccc65</item> <item name="light_green_500" type="color">#8bc34a</item> <item name="light_green_600" type="color">#7cb342</item> <item name="light_green_700" type="color">#689f38</item> <item name="light_green_800" type="color">#558b2f</item> <item name="light_green_900" type="color">#33691e</item> <item name="light_green_A100" type="color">#ccff90</item> <item name="light_green_A200" type="color">#b2ff59</item> <item name="light_green_A400" type="color">#76ff03</item> <item name="light_green_A700" type="color">#64dd17</item> <item name="lime_50" type="color">#f9fbe7</item> <item name="lime_100" type="color">#f0f4c3</item> <item name="lime_200" type="color">#e6ee9c</item> <item name="lime_300" type="color">#dce775</item> <item name="lime_400" type="color">#d4e157</item> <item name="lime_500" type="color">#cddc39</item> <item name="lime_600" type="color">#c0ca33</item> <item name="lime_700" type="color">#afb42b</item> <item name="lime_800" type="color">#9e9d24</item> <item name="lime_900" type="color">#827717</item> <item name="lime_A100" type="color">#f4ff81</item> <item name="lime_A200" type="color">#eeff41</item> <item name="lime_A400" type="color">#c6ff00</item> <item name="lime_A700" type="color">#aeea00</item> <item name="yellow_50" type="color">#fffde7</item> <item name="yellow_100" type="color">#fff9c4</item> <item name="yellow_200" type="color">#fff59d</item> <item name="yellow_300" type="color">#fff176</item> <item name="yellow_400" type="color">#ffee58</item> <item name="yellow_500" type="color">#ffeb3b</item> <item name="yellow_600" type="color">#fdd835</item> <item name="yellow_700" type="color">#fbc02d</item> <item name="yellow_800" type="color">#f9a825</item> <item name="yellow_900" type="color">#f57f17</item> <item name="yellow_A100" type="color">#ffff8d</item> <item name="yellow_A200" type="color">#ffff00</item> <item name="yellow_A400" type="color">#ffea00</item> <item name="yellow_A700" type="color">#ffd600</item> <item name="amber_50" type="color">#fff8e1</item> <item name="amber_100" type="color">#ffecb3</item> <item name="amber_200" type="color">#ffe082</item> <item name="amber_300" type="color">#ffd54f</item> <item name="amber_400" type="color">#ffca28</item> <item name="amber_500" type="color">#ffc107</item> <item name="amber_600" type="color">#ffb300</item> <item name="amber_700" type="color">#ffa000</item> <item name="amber_800" type="color">#ff8f00</item> <item name="amber_900" type="color">#ff6f00</item> <item name="amber_A100" type="color">#ffe57f</item> <item name="amber_A200" type="color">#ffd740</item> <item name="amber_A400" type="color">#ffc400</item> <item name="amber_A700" type="color">#ffab00</item> <item name="orange_50" type="color">#fff3e0</item> <item name="orange_100" type="color">#ffe0b2</item> <item name="orange_200" type="color">#ffcc80</item> <item name="orange_300" type="color">#ffb74d</item> <item name="orange_400" type="color">#ffa726</item> <item name="orange_500" type="color">#ff9800</item> <item name="orange_600" type="color">#fb8c00</item> <item name="orange_700" type="color">#f57c00</item> <item name="orange_800" type="color">#ef6c00</item> <item name="orange_900" type="color">#e65100</item> <item name="orange_A100" type="color">#ffd180</item> <item name="orange_A200" type="color">#ffab40</item> <item name="orange_A400" type="color">#ff9100</item> <item name="orange_A700" type="color">#ff6d00</item> <item name="deep_orange_50" type="color">#fbe9e7</item> <item name="deep_orange_100" type="color">#ffccbc</item> <item name="deep_orange_200" type="color">#ffab91</item> <item name="deep_orange_300" type="color">#ff8a65</item> <item name="deep_orange_400" type="color">#ff7043</item> <item name="deep_orange_500" type="color">#ff5722</item> <item name="deep_orange_600" type="color">#f4511e</item> <item name="deep_orange_700" type="color">#e64a19</item> <item name="deep_orange_800" type="color">#d84315</item> <item name="deep_orange_900" type="color">#bf360c</item> <item name="deep_orange_A100" type="color">#ff9e80</item> <item name="deep_orange_A200" type="color">#ff6e40</item> <item name="deep_orange_A400" type="color">#ff3d00</item> <item name="deep_orange_A700" type="color">#dd2c00</item> <item name="brown_50" type="color">#efebe9</item> <item name="brown_100" type="color">#d7ccc8</item> <item name="brown_200" type="color">#bcaaa4</item> <item name="brown_300" type="color">#a1887f</item> <item name="brown_400" type="color">#8d6e63</item> <item name="brown_500" type="color">#795548</item> <item name="brown_600" type="color">#6d4c41</item> <item name="brown_700" type="color">#5d4037</item> <item name="brown_800" type="color">#4e342e</item> <item name="brown_900" type="color">#3e2723</item> <item name="grey_50" type="color">#fafafa</item> <item name="grey_100" type="color">#f5f5f5</item> <item name="grey_200" type="color">#eeeeee</item> <item name="grey_300" type="color">#e0e0e0</item> <item name="grey_400" type="color">#bdbdbd</item> <item name="grey_500" type="color">#9e9e9e</item> <item name="grey_600" type="color">#757575</item> <item name="grey_700" type="color">#616161</item> <item name="grey_800" type="color">#424242</item> <item name="grey_900" type="color">#212121</item> <item name="grey_1000b" type="color">#000000</item> <item name="grey_1000w" type="color">#ffffff</item> <item name="blue_grey_50" type="color">#eceff1</item> <item name="blue_grey_100" type="color">#cfd8dc</item> <item name="blue_grey_200" type="color">#b0bec5</item> <item name="blue_grey_300" type="color">#90a4ae</item> <item name="blue_grey_400" type="color">#78909c</item> <item name="blue_grey_500" type="color">#607d8b</item> <item name="blue_grey_600" type="color">#546e7a</item> <item name="blue_grey_700" type="color">#455a64</item> <item name="blue_grey_800" type="color">#37474f</item> <item name="blue_grey_900" type="color">#263238</item> </array> </resources> 

Но будьте осторожны, это, вероятно, менее эффективно, чем отражение.

Используя отражение, вы можете получить все константы java.awt.Color, некоторые 148 цветов с именами

 for (Field field : Color.class.getDeclaredFields()) { int modifiers = field.getModifiers(); if (Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers) && Modifier.isFinal(modifiers) && field.getType() == Color.class) { String colorName = field.getName().toLowerCase(Locale.US); Color color = Color.valueOf(colorName); System.out.printf("- %s -> %s%n", colorName, color); } } 

Это использует отражение и предполагает, что постоянное имя является удобочитаемым человеком.

 [139] thistle -> 0xd8bfd8ff [140] tomato -> 0xff6347ff [141] turquoise -> 0x40e0d0ff [142] violet -> 0xee82eeff [143] wheat -> 0xf5deb3ff [144] white -> 0xffffffff [145] whitesmoke -> 0xf5f5f5ff [146] yellow -> 0xffff00ff [147] yellowgreen -> 0x9acd32ff 

Поэтому добавьте цвета в список и произвольно выберите один с random.nextInt(colors.size()) .

Как Тибокс описал:

1. Добавьте array.xml материала в array.xml :

 <array name="mdcolor_50"> <item name="red_50" type="color">#fde0dc</item> <item name="pink_50" type="color">#fce4ec</item> <item name="purple_50" type="color">#f3e5f5</item> <item name="deep_purple_50" type="color">#ede7f6</item> <item name="indigo_50" type="color">#e8eaf6</item> <item name="blue_50" type="color">#e7e9fd</item> <item name="light_blue_50" type="color">#e1f5fe</item> <item name="cyan_50" type="color">#e0f7fa</item> <item name="teal_50" type="color">#e0f2f1</item> <item name="green_50" type="color">#d0f8ce</item> <item name="light_green_50" type="color">#f1f8e9</item> <item name="lime_50" type="color">#f9fbe7</item> <item name="yellow_50" type="color">#fffde7</item> <item name="amber_50" type="color">#fff8e1</item> <item name="orange_50" type="color">#fff3e0</item> <item name="deep_orange_50" type="color">#fbe9e7</item> <item name="brown_50" type="color">#efebe9</item> <item name="grey_50" type="color">#fafafa</item> <item name="blue_grey_50" type="color">#eceff1</item> </array> <array name="mdcolor_100"> <item name="red_100" type="color">#f9bdbb</item> <item name="pink_100" type="color">#f8bbd0</item> <item name="purple_100" type="color">#e1bee7</item> <item name="deep_purple_100" type="color">#d1c4e9</item> <item name="indigo_100" type="color">#c5cae9</item> <item name="blue_100" type="color">#d0d9ff</item> <item name="light_blue_100" type="color">#b3e5fc</item> <item name="cyan_100" type="color">#b2ebf2</item> <item name="teal_100" type="color">#b2dfdb</item> <item name="green_100" type="color">#a3e9a4</item> <item name="light_green_100" type="color">#dcedc8</item> <item name="lime_100" type="color">#f0f4c3</item> <item name="yellow_100" type="color">#fff9c4</item> <item name="amber_100" type="color">#ffecb3</item> <item name="orange_100" type="color">#ffe0b2</item> <item name="deep_orange_100" type="color">#ffccbc</item> <item name="brown_100" type="color">#d7ccc8</item> <item name="grey_100" type="color">#f5f5f5</item> <item name="blue_grey_100" type="color">#cfd8dc</item> </array> <array name="mdcolor_200"> <item name="red_200" type="color">#f69988</item> <item name="pink_200" type="color">#f48fb1</item> <item name="purple_200" type="color">#ce93d8</item> <item name="deep_purple_200" type="color">#b39ddb</item> <item name="indigo_200" type="color">#9fa8da</item> <item name="blue_200" type="color">#afbfff</item> <item name="light_blue_200" type="color">#81d4fa</item> <item name="cyan_200" type="color">#80deea</item> <item name="teal_200" type="color">#80cbc4</item> <item name="green_200" type="color">#72d572</item> <item name="light_green_200" type="color">#c5e1a5</item> <item name="lime_200" type="color">#e6ee9c</item> <item name="yellow_200" type="color">#fff59d</item> <item name="orange_200" type="color">#ffcc80</item> <item name="deep_orange_200" type="color">#ffab91</item> <item name="brown_200" type="color">#bcaaa4</item> <item name="grey_200" type="color">#eeeeee</item> <item name="blue_grey_200" type="color">#b0bec5</item> </array> <array name="mdcolor_300"> <item name="red_300" type="color">#f36c60</item> <item name="pink_300" type="color">#f06292</item> <item name="purple_300" type="color">#ba68c8</item> <item name="deep_purple_300" type="color">#9575cd</item> <item name="indigo_300" type="color">#7986cb</item> <item name="blue_300" type="color">#91a7ff</item> <item name="light_blue_300" type="color">#4fc3f7</item> <item name="cyan_300" type="color">#4dd0e1</item> <item name="teal_300" type="color">#4db6ac</item> <item name="green_300" type="color">#42bd41</item> <item name="light_green_300" type="color">#aed581</item> <item name="lime_300" type="color">#dce775</item> <item name="yellow_300" type="color">#fff176</item> <item name="orange_300" type="color">#ffb74d</item> <item name="deep_orange_300" type="color">#ff8a65</item> <item name="brown_300" type="color">#a1887f</item> <item name="grey_300" type="color">#e0e0e0</item> <item name="blue_grey_300" type="color">#90a4ae</item> </array> <array name="mdcolor_400"> <item name="red_400" type="color">#e84e40</item> <item name="pink_400" type="color">#ec407a</item> <item name="purple_400" type="color">#ab47bc</item> <item name="deep_purple_400" type="color">#7e57c2</item> <item name="indigo_400" type="color">#5c6bc0</item> <item name="blue_400" type="color">#738ffe</item> <item name="light_blue_400" type="color">#29b6f6</item> <item name="cyan_400" type="color">#26c6da</item> <item name="teal_400" type="color">#26a69a</item> <item name="green_400" type="color">#2baf2b</item> <item name="light_green_400" type="color">#9ccc65</item> <item name="lime_400" type="color">#d4e157</item> <item name="yellow_400" type="color">#ffee58</item> <item name="orange_400" type="color">#ffa726</item> <item name="deep_orange_400" type="color">#ff7043</item> <item name="brown_400" type="color">#8d6e63</item> <item name="grey_400" type="color">#bdbdbd</item> <item name="blue_grey_400" type="color">#78909c</item> </array> <array name="mdcolor_500"> <item name="red_500" type="color">#e51c23</item> <item name="pink_500" type="color">#e91e63</item> <item name="purple_500" type="color">#9c27b0</item> <item name="deep_purple_500" type="color">#673ab7</item> <item name="indigo_500" type="color">#3f51b5</item> <item name="blue_500" type="color">#5677fc</item> <item name="light_blue_500" type="color">#03a9f4</item> <item name="cyan_500" type="color">#00bcd4</item> <item name="teal_500" type="color">#009688</item> <item name="green_500" type="color">#259b24</item> <item name="light_green_500" type="color">#8bc34a</item> <item name="lime_500" type="color">#cddc39</item> <item name="yellow_500" type="color">#ffeb3b</item> <item name="orange_500" type="color">#ff9800</item> <item name="deep_orange_500" type="color">#ff5722</item> <item name="brown_500" type="color">#795548</item> <item name="grey_500" type="color">#9e9e9e</item> <item name="blue_grey_500" type="color">#607d8b</item> </array> <array name="mdcolor_600"> <item name="red_600" type="color">#dd191d</item> <item name="pink_600" type="color">#d81b60</item> <item name="purple_600" type="color">#8e24aa</item> <item name="deep_purple_600" type="color">#5e35b1</item> <item name="indigo_600" type="color">#3949ab</item> <item name="blue_600" type="color">#4e6cef</item> <item name="light_blue_600" type="color">#039be5</item> <item name="cyan_600" type="color">#00acc1</item> <item name="teal_600" type="color">#00897b</item> <item name="green_600" type="color">#0a8f08</item> <item name="light_green_600" type="color">#7cb342</item> <item name="lime_600" type="color">#c0ca33</item> <item name="yellow_600" type="color">#fdd835</item> <item name="orange_600" type="color">#fb8c00</item> <item name="deep_orange_600" type="color">#f4511e</item> <item name="brown_600" type="color">#6d4c41</item> <item name="grey_600" type="color">#757575</item> <item name="blue_grey_600" type="color">#546e7a</item> </array> <array name="mdcolor_700"> <item name="red_700" type="color">#d01716</item> <item name="pink_700" type="color">#c2185b</item> <item name="purple_700" type="color">#7b1fa2</item> <item name="deep_purple_700" type="color">#512da8</item> <item name="indigo_700" type="color">#303f9f</item> <item name="blue_700" type="color">#455ede</item> <item name="light_blue_700" type="color">#0288d1</item> <item name="cyan_700" type="color">#0097a7</item> <item name="teal_700" type="color">#00796b</item> <item name="green_700" type="color">#0a7e07</item> <item name="light_green_700" type="color">#689f38</item> <item name="lime_700" type="color">#afb42b</item> <item name="yellow_700" type="color">#fbc02d</item> <item name="orange_700" type="color">#f57c00</item> <item name="deep_orange_700" type="color">#e64a19</item> <item name="brown_700" type="color">#5d4037</item> <item name="grey_700" type="color">#616161</item> <item name="blue_grey_700" type="color">#455a64</item> </array> <array name="mdcolor_800"> <item name="red_800" type="color">#c41411</item> <item name="pink_800" type="color">#ad1457</item> <item name="purple_800" type="color">#6a1b9a</item> <item name="deep_purple_800" type="color">#4527a0</item> <item name="indigo_800" type="color">#283593</item> <item name="blue_800" type="color">#3b50ce</item> <item name="light_blue_800" type="color">#0277bd</item> <item name="cyan_800" type="color">#00838f</item> <item name="teal_800" type="color">#00695c</item> <item name="green_800" type="color">#056f00</item> <item name="light_green_800" type="color">#558b2f</item> <item name="lime_800" type="color">#9e9d24</item> <item name="yellow_800" type="color">#f9a825</item> <item name="orange_800" type="color">#ef6c00</item> <item name="deep_orange_800" type="color">#d84315</item> <item name="brown_800" type="color">#4e342e</item> <item name="grey_800" type="color">#424242</item> <item name="blue_grey_800" type="color">#37474f</item> </array> <array name="mdcolor_900"> <item name="red_900" type="color">#b0120a</item> <item name="pink_900" type="color">#880e4f</item> <item name="purple_900" type="color">#4a148c</item> <item name="deep_purple_900" type="color">#311b92</item> <item name="indigo_900" type="color">#1a237e</item> <item name="blue_900" type="color">#2a36b1</item> <item name="light_blue_900" type="color">#01579b</item> <item name="cyan_900" type="color">#006064</item> <item name="teal_900" type="color">#004d40</item> <item name="green_900" type="color">#0d5302</item> <item name="light_green_900" type="color">#33691e</item> <item name="lime_900" type="color">#827717</item> <item name="yellow_900" type="color">#f57f17</item> <item name="orange_900" type="color">#e65100</item> <item name="deep_orange_900" type="color">#bf360c</item> <item name="brown_900" type="color">#3e2723</item> <item name="grey_900" type="color">#212121</item> <item name="blue_grey_900" type="color">#263238</item> </array> <array name="mdcolor_A100"> <item name="red_A100" type="color">#ff7997</item> <item name="pink_A100" type="color">#ff80ab</item> <item name="purple_A100" type="color">#ea80fc</item> <item name="deep_purple_A100" type="color">#b388ff</item> <item name="indigo_A100" type="color">#8c9eff</item> <item name="blue_A100" type="color">#a6baff</item> <item name="light_blue_A100" type="color">#80d8ff</item> <item name="cyan_A100" type="color">#84ffff</item> <item name="teal_A100" type="color">#a7ffeb</item> <item name="green_A100" type="color">#a2f78d</item> <item name="light_green_A100" type="color">#ccff90</item> <item name="lime_A100" type="color">#f4ff81</item> <item name="yellow_A100" type="color">#ffff8d</item> <item name="orange_A100" type="color">#ffd180</item> <item name="deep_orange_A100" type="color">#ff9e80</item> </array> <array name="mdcolor_A200"> <item name="red_A200" type="color">#ff5177</item> <item name="pink_A200" type="color">#ff4081</item> <item name="purple_A200" type="color">#e040fb</item> <item name="deep_purple_A200" type="color">#7c4dff</item> <item name="indigo_A200" type="color">#536dfe</item> <item name="blue_A200" type="color">#6889ff</item> <item name="light_blue_A200" type="color">#40c4ff</item> <item name="cyan_A200" type="color">#18ffff</item> <item name="teal_A200" type="color">#64ffda</item> <item name="green_A200" type="color">#5af158</item> <item name="light_green_A200" type="color">#b2ff59</item> <item name="lime_A200" type="color">#eeff41</item> <item name="yellow_A200" type="color">#ffff00</item> <item name="orange_A200" type="color">#ffab40</item> <item name="deep_orange_A200" type="color">#ff6e40</item> </array> <array name="mdcolor_A400"> <item name="red_A400" type="color">#ff2d6f</item> <item name="pink_A400" type="color">#f50057</item> <item name="purple_A400" type="color">#d500f9</item> <item name="deep_purple_A400" type="color">#651fff</item> <item name="indigo_A400" type="color">#3d5afe</item> <item name="blue_A400" type="color">#4d73ff</item> <item name="light_blue_A400" type="color">#00b0ff</item> <item name="cyan_A400" type="color">#00e5ff</item> <item name="teal_A400" type="color">#1de9b6</item> <item name="green_A400" type="color">#14e715</item> <item name="light_green_A400" type="color">#76ff03</item> <item name="lime_A400" type="color">#c6ff00</item> <item name="yellow_A400" type="color">#ffea00</item> <item name="orange_A400" type="color">#ff9100</item> <item name="deep_orange_A400" type="color">#ff3d00</item> </array> <array name="mdcolor_A700"> <item name="red_A700" type="color">#e00032</item> <item name="pink_A700" type="color">#c51162</item> <item name="purple_A700" type="color">#aa00ff</item> <item name="deep_purple_A700" type="color">#6200ea</item> <item name="indigo_A700" type="color">#304ffe</item> <item name="blue_A700" type="color">#4d69ff</item> <item name="light_blue_A700" type="color">#0091ea</item> <item name="cyan_A700" type="color">#00b8d4</item> <item name="teal_A700" type="color">#00bfa5</item> <item name="green_A700" type="color">#12c700</item> <item name="light_green_A700" type="color">#64dd17</item> <item name="lime_A700" type="color">#aeea00</item> <item name="yellow_A700" type="color">#ffd600</item> <item name="orange_A700" type="color">#ff6d00</item> <item name="deep_orange_A700" type="color">#dd2c00</item> </array> <array name="extra"> <item name="grey_1000b" type="color">#000000</item> <item name="grey_1000w" type="color">#ffffff</item> </array> 

2. Add getMDcolor() to your class:

 private int getMDcolor(String mdcolor) { int returnColor = 0; String[] mdcolors = new String[]{ "mdcolor_50", "mdcolor_100", "mdcolor_200", "mdcolor_300", "mdcolor_400", "mdcolor_500", "mdcolor_600", "mdcolor_700", "mdcolor_800", "mdcolor_900", "mdcolor_A100", "mdcolor_A200", "mdcolor_A400", "mdcolor_A700", "extras"}; if (Arrays.asList(mdcolors).contains(mdcolor)) { TypedArray colors = null; switch (mdcolor) { case "mdcolor_50": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_50); break; case "mdcolors_100": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_100); break; case "mdcolor_200": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_200); break; case "mdcolor_300": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_300); break; case "mdcolor_400": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_400); break; case "mdcolor_500": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_500); break; case "mdcolor_600": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_600); break; case "mdcolor_700": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_700); break; case "mdcolor_800": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_800); break; case "mdcolor_900": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_900); break; case "mdcolor_A100": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_A100); break; case "mdcolor_A200": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_A200); break; case "mdcolor_A400": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_A400); break; case "mdcolor_A700": colors = mContext.getResources().obtainTypedArray(R.array.mdcolor_A700); break; case "extra": colors = mContext.getResources().obtainTypedArray(R.array.extra); break; } if (colors != null) { int index = (int) (Math.random() * colors.length()); returnColor = colors.getColor(index, Color.BLACK); } assert colors != null; colors.recycle(); } return returnColor; 

3. Usage:

  • Get a color by: getMDcolor("<md color id>")
  • Available colors:
    mdcolor_50
    mdcolor_100
    mdcolor_200
    mdcolor_300
    mdcolor_400
    mdcolor_500
    mdcolor_600
    mdcolor_700
    mdcolor_800
    mdcolor_900
    mdcolor_A100
    mdcolor_A200
    mdcolor_A400
    mdcolor_A700
    extras

Here is a class I wrote. You can create your own material color palette or get a random color.

Example uses:

 // get a random color. int randomColor = MaterialColorPalette.getRandomColor("100"); // create your own material color palette MaterialColorPalette myCustomPalette = new MaterialColorPalette(Color.CYAN); int my200Color = myCustomPalette.getColor("200"); 

MaterialColorPalette.java

 import android.graphics.Color; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Random; public class MaterialColorPalette { public static final int RED_500 = 0xFFF44336; public static final int PINK_500 = 0xFFE91E63; public static final int PURPLE_500 = 0xFF9C27B0; public static final int DEEP_PURPLE_500 = 0xFF673AB7; public static final int INDIGO_500 = 0xFF3F51B5; public static final int BLUE_500 = 0xFF2196F3; public static final int LIGHT_BLUE_500 = 0xFF03A9F4; public static final int CYAN_500 = 0xFF00BCD4; public static final int TEAL_500 = 0xFF009688; public static final int GREEN_500 = 0xFF4CAF50; public static final int LIGHT_GREEN_500 = 0xFF8BC34A; public static final int LIME_500 = 0xFFCDDC39; public static final int YELLOW_500 = 0xFFFFEB3B; public static final int AMBER_500 = 0xFFFFC107; public static final int ORANGE_500 = 0xFFFF9800; public static final int DEEP_ORANGE_500 = 0xFFFF5722; public static final int BROWN_500 = 0xFF795548; public static final int GREY_500 = 0xFF9E9E9E; public static final int BLUE_GREY_500 = 0xFF607D8B; private static final List<MaterialColorPalette> MATERIAL_PALETTES; private static final Random RANDOM = new Random(); static { MATERIAL_PALETTES = new ArrayList<>(); MATERIAL_PALETTES.add(new MaterialColorPalette(RED_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(PINK_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(PURPLE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(DEEP_PURPLE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(INDIGO_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(BLUE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(LIGHT_BLUE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(CYAN_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(TEAL_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(GREEN_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(LIGHT_GREEN_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(LIME_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(YELLOW_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(AMBER_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(ORANGE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(DEEP_ORANGE_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(BROWN_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(GREY_500)); MATERIAL_PALETTES.add(new MaterialColorPalette(BLUE_GREY_500)); } public static int getRandomColor(String key) { return MATERIAL_PALETTES.get(RANDOM.nextInt(MATERIAL_PALETTES.size())).getColor(key); } /** * Lighten or darken a color * * @param color * color value * @param percent * -1.0 to 1.0 * @return new shaded color * @see #shadeColor(String, double) */ public static int shadeColor(int color, double percent) { return shadeColor(String.format("#%06X", (0xFFFFFF & color)), percent); // ignores alpha channel } /** * Lighten or darken a color * * @param color * 7 character string representing the color. * @param percent * -1.0 to 1.0 * @return new shaded color * @see #shadeColor(int, double) */ public static int shadeColor(String color, double percent) { // based off http://stackoverflow.com/a/13542669/1048340 long f = Long.parseLong(color.substring(1), 16); double t = percent < 0 ? 0 : 255; double p = percent < 0 ? percent * -1 : percent; long R = f >> 16; long G = f >> 8 & 0x00FF; long B = f & 0x0000FF; int red = (int) (Math.round((t - R) * p) + R); int green = (int) (Math.round((t - G) * p) + G); int blue = (int) (Math.round((t - B) * p) + B); return Color.rgb(red, green, blue); } private final HashMap<String, Integer> palette = new HashMap<>(); /** * @param primary * the 500 color */ public MaterialColorPalette(int primary) { palette.put("50", shadeColor(primary, 0.9)); palette.put("100", shadeColor(primary, 0.7)); palette.put("200", shadeColor(primary, 0.5)); palette.put("300", shadeColor(primary, 0.333)); palette.put("400", shadeColor(primary, 0.166)); palette.put("500", primary); palette.put("600", shadeColor(primary, -0.125)); palette.put("700", shadeColor(primary, -0.25)); palette.put("800", shadeColor(primary, -0.375)); palette.put("900", shadeColor(primary, -0.5)); palette.put("A100", shadeColor(primary, 0.7)); palette.put("A200", shadeColor(primary, 0.5)); palette.put("A400", shadeColor(primary, 0.166)); palette.put("A700", shadeColor(primary, -0.25)); } public int getColor(String key) { return palette.get(key); } public void putColor(String key, int color) { palette.put(key, color); } } 

Just copy the class into your project and add the package declaration.