是否可以從佈局資源訪問Color類的顏色？

Question

我知道如何在res文件夾訪問定義的顏色：

//定義

<resources> 
    <color name="white">#ffffff</color> 
</resources> 

//使用

android:background="@color/white" 

即使是默認的顏色由Android定義：

android:background="@android:color/widget edittext dark" 

但我不知道是否有可能t Ø從Layout在Color類中定義的顏色使用：

Color.MAGENTA 

謝謝！

Answer 1

這不能在一個XML佈局來完成，但是這仍然可以在運行時在Java中使用下面的代碼完成：

myLayout.setBackgroundColor(Color.MAGENTA); 

Answer 2

您可以將Color類中的值複製並放置在您自己的顏色資源文件中？

Answer 3

我不認爲你可以從XML訪問他們，但你可以在運行時從Java代碼mButton.setBackgroundColor(Color.MAGENTA); 改變背景顏色或通過另一種方式，你可以創建一個xml文件，然後轉介他們

這裏是一個樣品顏色xml文件：

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
<color name="White">#FFFFFF</color> 
<color name="Ivory">#FFFFF0</color> 
<color name="LightYellow">#FFFFE0</color> 
<color name="Yellow">#FFFF00</color> 
<color name="Snow">#FFFAFA</color> 
<color name="FloralWhite">#FFFAF0</color> 
<color name="LemonChiffon">#FFFACD</color> 
<color name="Cornsilk">#FFF8DC</color> 
<color name="Seashell">#FFF5EE</color> 
<color name="LavenderBlush">#FFF0F5</color> 
<color name="PapayaWhip">#FFEFD5</color> 
<color name="BlanchedAlmond">#FFEBCD</color> 
<color name="MistyRose">#FFE4E1</color> 
<color name="Bisque">#FFE4C4</color> 
<color name="Moccasin">#FFE4B5</color> 
<color name="NavajoWhite">#FFDEAD</color> 
<color name="PeachPuff">#FFDAB9</color> 
<color name="Gold">#FFD700</color> 
<color name="Pink">#FFC0CB</color> 
<color name="LightPink">#FFB6C1</color> 
<color name="Orange">#FFA500</color> 
<color name="LightSalmon">#FFA07A</color> 
<color name="DarkOrange">#FF8C00</color> 
<color name="Coral">#FF7F50</color> 
<color name="HotPink">#FF69B4</color> 
<color name="Tomato">#FF6347</color> 
<color name="OrangeRed">#FF4500</color> 
<color name="DeepPink">#FF1493</color> 
<color name="Fuchsia">#FF00FF</color> 
<color name="Magenta">#FF00FF</color> 
<color name="Red">#FF0000</color> 
<color name="OldLace">#FDF5E6</color> 
<color name="LightGoldenrodYellow">#FAFAD2</color> 
<color name="Linen">#FAF0E6</color> 
<color name="AntiqueWhite">#FAEBD7</color> 
<color name="Salmon">#FA8072</color> 
<color name="GhostWhite">#F8F8FF</color> 
<color name="MintCream">#F5FFFA</color> 
<color name="WhiteSmoke">#F5F5F5</color> 
<color name="Beige">#F5F5DC</color> 
<color name="Wheat">#F5DEB3</color> 
<color name="SandyBrown">#F4A460</color> 
<color name="Azure">#F0FFFF</color> 
<color name="Honeydew">#F0FFF0</color> 
<color name="AliceBlue">#F0F8FF</color> 
<color name="Khaki">#F0E68C</color> 
<color name="LightCoral">#F08080</color> 
<color name="PaleGoldenrod">#EEE8AA</color> 
<color name="Violet">#EE82EE</color> 
<color name="DarkSalmon">#E9967A</color> 
<color name="Lavender">#E6E6FA</color> 
<color name="LightCyan">#E0FFFF</color> 
<color name="BurlyWood">#DEB887</color> 
<color name="Plum">#DDA0DD</color> 
<color name="Gainsboro">#DCDCDC</color> 
<color name="Crimson">#DC143C</color> 
<color name="PaleVioletRed">#DB7093</color> 
<color name="Goldenrod">#DAA520</color> 
<color name="Orchid">#DA70D6</color> 
<color name="Thistle">#D8BFD8</color> 
<color name="LightGrey">#D3D3D3</color> 
<color name="Tan">#D2B48C</color> 
<color name="Chocolate">#D2691E</color> 
<color name="Peru">#CD853F</color> 
<color name="IndianRed">#CD5C5C</color> 
<color name="MediumVioletRed">#C71585</color> 
<color name="Silver">#C0C0C0</color> 
<color name="DarkKhaki">#BDB76B</color> 
<color name="RosyBrown">#BC8F8F</color> 
<color name="MediumOrchid">#BA55D3</color> 
<color name="DarkGoldenrod">#B8860B</color> 
<color name="FireBrick">#B22222</color> 
<color name="PowderBlue">#B0E0E6</color> 
<color name="LightSteelBlue">#B0C4DE</color> 
<color name="PaleTurquoise">#AFEEEE</color> 
<color name="GreenYellow">#ADFF2F</color> 
<color name="LightBlue">#ADD8E6</color> 
<color name="DarkGray">#A9A9A9</color> 
<color name="Brown">#A52A2A</color> 
<color name="Sienna">#A0522D</color> 
<color name="YellowGreen">#9ACD32</color> 
<color name="DarkOrchid">#9932CC</color> 
<color name="PaleGreen">#98FB98</color> 
<color name="DarkViolet">#9400D3</color> 
<color name="MediumPurple">#9370DB</color> 
<color name="LightGreen">#90EE90</color> 
<color name="DarkSeaGreen">#8FBC8F</color> 
<color name="SaddleBrown">#8B4513</color> 
<color name="DarkMagenta">#8B008B</color> 
<color name="DarkRed">#8B0000</color> 
<color name="BlueViolet">#8A2BE2</color> 
<color name="LightSkyBlue">#87CEFA</color> 
<color name="SkyBlue">#87CEEB</color> 
<color name="Gray">#808080</color> 
<color name="Olive">#808000</color> 
<color name="Purple">#800080</color> 
<color name="Maroon">#800000</color> 
<color name="Aquamarine">#7FFFD4</color> 
<color name="Chartreuse">#7FFF00</color> 
<color name="LawnGreen">#7CFC00</color> 
<color name="MediumSlateBlue">#7B68EE</color> 
<color name="LightSlateGray">#778899</color> 
<color name="SlateGray">#708090</color> 
<color name="OliveDrab">#6B8E23</color> 
<color name="SlateBlue">#6A5ACD</color> 
<color name="DimGray">#696969</color> 
<color name="MediumAquamarine">#66CDAA</color> 
<color name="CornflowerBlue">#6495ED</color> 
<color name="CadetBlue">#5F9EA0</color> 
<color name="DarkOliveGreen">#556B2F</color> 
<color name="Indigo">#4B0082</color> 
<color name="MediumTurquoise">#48D1CC</color> 
<color name="DarkSlateBlue">#483D8B</color> 
<color name="SteelBlue">#4682B4</color> 
<color name="RoyalBlue">#4169E1</color> 
<color name="Turquoise">#40E0D0</color> 
<color name="MediumSeaGreen">#3CB371</color> 
<color name="LimeGreen">#32CD32</color> 
<color name="DarkSlateGray">#2F4F4F</color> 
<color name="SeaGreen">#2E8B57</color> 
<color name="ForestGreen">#228B22</color> 
<color name="LightSeaGreen">#20B2AA</color> 
<color name="DodgerBlue">#1E90FF</color> 
<color name="MidnightBlue">#191970</color> 
<color name="Aqua">#00FFFF</color> 
<color name="Cyan">#00FFFF</color> 
<color name="SpringGreen">#00FF7F</color> 
<color name="Lime">#00FF00</color> 
<color name="MediumSpringGreen">#00FA9A</color> 
<color name="DarkTurquoise">#00CED1</color> 
<color name="DeepSkyBlue">#00BFFF</color> 
<color name="DarkCyan">#008B8B</color> 
<color name="Teal">#008080</color> 
<color name="Green">#008000</color> 
<color name="DarkGreen">#006400</color> 
<color name="Blue">#0000FF</color> 
<color name="MediumBlue">#0000CD</color> 
<color name="DarkBlue">#00008B</color> 
<color name="Navy">#000080</color> 
<color name="Black">#000000</color> 


<!-- Black Transparent --> 
<color name="transparent_black_hex_1">#11000000</color> 
<color name="transparent_black_hex_2">#22000000</color> 
<color name="transparent_black_hex_3">#33000000</color> 
<color name="transparent_black_hex_4">#44000000</color> 
<color name="transparent_black_hex_5">#55000000</color> 
<color name="transparent_black_hex_6">#66000000</color> 
<color name="transparent_black_hex_7">#77000000</color> 
<color name="transparent_black_hex_8">#88000000</color> 
<color name="transparent_black_hex_9">#99000000</color> 
<color name="transparent_black_hex_10">#aa000000</color> 
<color name="transparent_black_hex_11">#bb000000</color> 
<color name="transparent_black_hex_12">#cc000000</color> 
<color name="transparent_black_hex_13">#dd000000</color> 
<color name="transparent_black_hex_14">#ee000000</color> 
<color name="transparent_black_hex_15">#ff000000</color> 

<color name="transparent_black_percent_5">#0D000000</color> 
<color name="transparent_black_percent_10">#1A000000</color> 
<color name="transparent_black_percent_15">#26000000</color> 
<color name="transparent_black_percent_20">#33000000</color> 
<color name="transparent_black_percent_25">#40000000</color> 
<color name="transparent_black_percent_30">#4D000000</color> 
<color name="transparent_black_percent_35">#59000000</color> 
<color name="transparent_black_percent_40">#66000000</color> 
<color name="transparent_black_percent_45">#73000000</color> 
<color name="transparent_black_percent_50">#80000000</color> 
<color name="transparent_black_percent_55">#8C000000</color> 
<color name="transparent_black_percent_60">#99000000</color> 
<color name="transparent_black_percent_65">#A6000000</color> 
<color name="transparent_black_percent_70">#B3000000</color> 
<color name="transparent_black_percent_75">#BF000000</color> 
<color name="transparent_black_percent_80">#CC000000</color> 
<color name="transparent_black_percent_85">#D9000000</color> 
<color name="transparent_black_percent_90">#E6000000</color> 
<color name="transparent_black_percent_95">#F2000000</color> 

<!-- White Transparent --> 
<color name="transparent_white_hex_1">#11ffffff</color> 
<color name="transparent_white_hex_2">#22ffffff</color> 
<color name="transparent_white_hex_3">#33ffffff</color> 
<color name="transparent_white_hex_4">#44ffffff</color> 
<color name="transparent_white_hex_5">#55ffffff</color> 
<color name="transparent_white_hex_6">#66ffffff</color> 
<color name="transparent_white_hex_7">#77ffffff</color> 
<color name="transparent_white_hex_8">#88ffffff</color> 
<color name="transparent_white_hex_9">#99ffffff</color> 
<color name="transparent_white_hex_10">#aaffffff</color> 
<color name="transparent_white_hex_11">#bbffffff</color> 
<color name="transparent_white_hex_12">#ccffffff</color> 
<color name="transparent_white_hex_13">#ddffffff</color> 
<color name="transparent_white_hex_14">#eeffffff</color> 
<color name="transparent_white_hex_15">#ffffffff</color> 

<color name="transparent_white_percent_5">#0Dffffff</color> 
<color name="transparent_white_percent_10">#1Affffff</color> 
<color name="transparent_white_percent_15">#26ffffff</color> 
<color name="transparent_white_percent_20">#33ffffff</color> 
<color name="transparent_white_percent_25">#40ffffff</color> 
<color name="transparent_white_percent_30">#4Dffffff</color> 
<color name="transparent_white_percent_35">#59ffffff</color> 
<color name="transparent_white_percent_40">#66ffffff</color> 
<color name="transparent_white_percent_45">#73ffffff</color> 
<color name="transparent_white_percent_50">#80ffffff</color> 
<color name="transparent_white_percent_55">#8Cffffff</color> 
<color name="transparent_white_percent_60">#99ffffff</color> 
<color name="transparent_white_percent_65">#A6ffffff</color> 
<color name="transparent_white_percent_70">#B3ffffff</color> 
<color name="transparent_white_percent_75">#BFffffff</color> 
<color name="transparent_white_percent_80">#CCffffff</color> 
<color name="transparent_white_percent_85">#D9ffffff</color> 
<color name="transparent_white_percent_90">#E6ffffff</color> 
<color name="transparent_white_percent_95">#F2ffffff</color> 
</resources>