Android 支持库构建 v26.X.X 构建错误:属性“字体"已经定义 [英] Android Support Library Build v26.X.X Build Error: Attribute "font" already defined

问题描述

我正在尝试从支持库的版本 25.3.1 升级到版本 26.XX，但每次我使用较新的版本构建项目时得到这个错误:

I'm trying to upgrade from version 25.3.1 to version 26.X.X of the support library, but every time I build the project using the newer version I get this error:

Error:(357) Attribute "font" already defined with incompatible format.
Error:(343) Original attribute defined here.

Error:java.util.concurrent.ExecutionException: 
com.android.ide.common.process.ProcessException: Error while executing 
process /Users/johnsmith/Library/Android/sdk/build-tools/26.0.1/aapt 
with arguments {package -f --no-crunch -I ...

我尝试过清理和重建.我也尝试过使缓存无效并重新启动 Android Studio.

I have tried cleaning and rebuilding. I have also tried invalidating caches and restarting Android Studio.

该应用程序使用支持库的 25.3.1 版本构建良好.我正在使用 Android Studio 3.0 Beta 2 和 Android Gradle 插件的 3.0.0-beta2 版本.

The app builds fine with version 25.3.1 of the support library. I'm using Android Studio 3.0 Beta 2 with version 3.0.0-beta2 of the Android Gradle plugin.

推荐答案

由于这个错误是:

• Android O 特定，
• 与font 属性相关，以及
• aapt 抛出的错误，

• Android O specific,
• related to a font attribute, and
• an error thrown by aapt,

我的猜测是您在应用程序代码中定义了一个名为 font 的自定义属性，该属性与 android-namespaced font 在 Android O 中引入的属性.尝试重命名或删除该自定义属性.

my guess is that you have defined a custom attribute named font in your application code that conflicts in some manner with the android-namespaced font attribute introduced in Android O. Try renaming or removing that custom attribute.

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