如何在Android中更改微调器背景？

Question

我正在开发一个需要更改微调器背景布局以匹配背景色的应用程序。我研究发现，我需要创建一个9补丁程序映像。我已经完成创建9补丁程序图像并在应用程序中使用了它，但它看起来比普通的微调框还大，而且我也看不到微调框中的下拉按钮。

如果你们从开始为Spinner创建9补丁程序映像并在应用程序中使用它开始，我很高兴为您提供清晰的教程。

旋转器代码

 <Spinner

        android:id="@+id/spnIncredientone"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_below="@+id/txtMixtureTitle" 

        android:layout_marginLeft="5dip"

        android:layout_marginRight="5dip"

        android:background="@drawable/spinner_background"

        android:prompt="@string/selectmixture" />

Answer 1

您可以像这样在xml中设置微调框的背景颜色：android:background="YOUR_HEX_COLOR_CODE"如果您在微调器中使用下拉菜单，则可以如下设置其背景颜色：android:popupBackground="YOUR_HEX_COLOR_CODE"

Answer 2

尽管这是一个较旧的帖子，但是由于我在寻找相同问题时碰到它，所以我想我也会加两美分。这是我带SpinDown箭头的Spinner背景的版本。只是完整的背景，而不仅仅是箭头。这就是它的样子。像...上申请微调<Spinner&nbsp; &nbsp; &nbsp;android:layout_width="match_parent"&nbsp; &nbsp; &nbsp;android:layout_height="wrap_content"&nbsp; &nbsp; &nbsp;android:background="@drawable/spinner_bg" />spinner_bg.xml<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android">&nbsp; &nbsp; <item>&nbsp; &nbsp; &nbsp; &nbsp; <color android:color="@color/InputBg" />&nbsp; &nbsp; </item>&nbsp; &nbsp; <item android:gravity="center_vertical|right" android:right="8dp">&nbsp; &nbsp; &nbsp; &nbsp; <layer-list>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <item android:width="12dp" android:height="12dp" android:gravity="center" android:bottom="10dp">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <rotate&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:fromDegrees="45"&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; android:toDegrees="45">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <shape android:shape="rectangle">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <solid android:color="#666666" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <stroke android:color="#aaaaaa" android:width="1dp"/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </shape>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </rotate>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </item>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <item android:width="30dp" android:height="10dp" android:bottom="21dp" android:gravity="center">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <shape android:shape="rectangle">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <solid android:color="@color/InputBg"/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </shape>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </item>&nbsp; &nbsp; &nbsp; &nbsp; </layer-list>&nbsp; &nbsp; </item></layer-list>@color/InputBg 应该替换为您想要用作背景的颜色。首先，它用所需的颜色填充背景。然后，一个子图层列表创建一个正方形并将其旋转45度，然后第二个具有背景颜色的Rectangle覆盖旋转正方形的顶部，使其看起来像向下箭头。（实际上并不需要在旋转矩形中有一个额外的笔划）