查看新闻onpress:更改背景颜色的新闻? 如何显示视图被按下?

目前,我已经有一个自定义的视图,以9-补丁图像为边界。

该自定义视图在LinearLayout中放置三次,所以如下所示:

+------------------------+ | CustomView | +------------------------+ | CustomView | +------------------------+ | CustomView | +------------------------+ 

我已经附加了一个点击事件监听器的视图,所以它是可点击的。 但是,然后我点击它,我不能看到我点击它 – 没有颜色的变化。

所以,我认为我会附加一个“onPress”监听器,然后改变视图的背景,但我找不到这样一个监听器。

所以,问题是 – 我如何在视图上创build行为,以便看到它被按下? 这通常在Android中完成,并以绿色背景表示现在正在按下。

问候

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您可以设置视图的OnClickListener。 这将被视为点击时调用。 但是对于点击视图时更改背景等简单操作,应该使用有状态的drawable。 他们的工作就是这样,你制作3个9-patch的图像。

  1. 是你现在拥有的正常背景。
  2. 是用户使用track-ball / d-padselect视图时的背景应该是什么样的
  3. 是当用户点击时视图应该是什么样子

然后,在可绘制文件夹中创build一个新的xml文件。 它应该是这样的:

 <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/background_pressed" /> <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/background_focused" /> <item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/background_pressed" /> <item android:drawable="@drawable/background_normal" /> 

然后,当你设置你的视图的背景设置为xml文件。

在这种情况下,您可能在访问颜色时遇到问题,您可能希望将colors.xml文件添加到值文件夹中,并使用以下颜色:

在这里输入图像说明

 <?xml version="1.0" encoding="utf-8"?> <resources> <color name="background_pressed">#FFFF00</color> <!--yellow--> <color name="background_normal">#808000</color> <!--olive--> <color name="background_focused">#0000FF</color> <!--blue--> </resources> 

然后添加另一个XML文件到你的可绘制的文件夹,你喜欢什么名字

在这里输入图像说明

像以前的答案,而不是@抽象的内容,你打电话@color

 <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/background_pressed" /> <item android:state_focused="true" android:state_pressed="false" android:drawable="@color/background_focused" /> <item android:state_focused="false" android:state_pressed="true" android:drawable="@color/background_pressed" /> <item android:drawable="@color/background_normal" /> </selector> 

现在,您可以将您的视图的背景设置为您的drawable

 android:background="@drawable/background_click_state" 

如果你想拥有所有的X11 / W3C颜色代码使用这个职位或只是在这里提供的代码:

 <?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> </resources>