如何使用xml布局文件中的自定义内联属性来自定义视图样式 [英] How to use custom inline attributes in xml layout files for customizing style of views
问题描述
自从我升级Android支持库以来，我一直在努力为按钮，文本视图和其他视图设置自定义颜色.显然，内联属性会被应用程序主题中定义的值覆盖.
since when I upgraded the Android Support Library, I'm struggling with setting custom colors for buttons, textviews and other views. Apparently, inline attributes get overridden by values defined in the application theme.
我已经在values/styles.xml中定义了一个应用程序主题:
I have defined an application theme in values/styles.xml:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="colorControlActivated">@color/colorPrimary</item>
</style>
<style name="AppTheme.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
</resources>
例如，在布局文件中，我将按钮的背景和文本颜色设置如下:
For instance, in my layout files, I set background and text colors of a button as follows:
<Button
...
android:textColor="@color/colorPrimary"
android:background="@drawable/homebutton"
...
/>
这是我在colors.xml中定义颜色的方法:
And here's how I define colors in colors.xml:
<resources>
<color name="colorPrimary">#0066FF</color>
<color name="colorPrimaryDark">#004AFF</color>
<color name="colorAccent">#FFFFFF</color>
<color name="background">#CCCCCC</color>
<color name="text">#555555</color>
<color name="green">#009900</color>
<color name="red">#FF0000</color>
<color name="orange">#FFA500</color>
<color name="white">#FFFFFF</color>
<color name="brown">#7A5230</color>
<color name="goalkeeper">#FFA500</color>
<color name="defender">#007c09</color>
<color name="midfielder">#1d8dc0</color>
<color name="attacker">#aa0a1c</color>
</resources>
此外，在清单中，我正确设置了主题:
Also, in the Manifest I correctly set the theme:
<application
android:name=".MyApplication"
android:allowBackup="true"
android:icon="@drawable/logo"
android:label="@string/app_name"
android:largeHeap="true"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:replace="android:theme">
在预览中，一切看起来都很不错，但是当我在模拟器中启动应用程序时，所有内联属性都会被应用程序主题定义的值忽略和覆盖.为什么这样?为什么忽略内联属性?有办法避免这种情况吗?
In the preview everything looks good, however when I launch the app in the simulator all inline attributes are ignored and overridden by the values defined by my application theme. Why so? Why are inline attributes ignored? Is there a way to avoid that?
UPDATE: I'm currently following the solution pointed out here https://code.google.com/p/android/issues/detail?id=203136&q=-has%3Ablocked%20reportedby%3DDeveloper%20attachments%3D2%20label%3AComponent-Support-Libraries&colspec=ID%20Status%20Priority%20Owner%20Summary%20Stars%20Reporter%20Opened It may be an issue caused by a bug in Maven Local repository
推荐答案
找到了原因，从而解决了问题:-)
Found the cause, hence fixed the issue :-)
Maven本地存储库(aka m2repository)的版本29显然有问题，如此处 https://code.google.com/p/android/issues/detail?id=203546
Apparently the version 29 of the Maven Local Repository (aka m2repository)is buggy, as pointed out here https://code.google.com/p/android/issues/detail?id=203136&q=-has%3Ablocked%20reportedby%3DDeveloper%20attachments%3D2%20label%3AComponent-Support-Libraries&colspec=ID%20Status%20Priority%20Owner%20Summary%20Stars%20Reporter%20Opened and here https://code.google.com/p/android/issues/detail?id=203546
解决方案很简单:只需降级到版本26，可以在此处下载 http://dl.google.com/android/repository/android_m2repository_r26.zip
The solution is simple: just downgrade to version 26, which can be downloaded here http://dl.google.com/android/repository/android_m2repository_r26.zip
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