Android Support Library Build v26.X.X Build Error: Attribute "font" already defined

user_5673746 0
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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 ...

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

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.

android-studio gradle android
4 Answers

I faced the same issue when i updated supporting library to latest version.

After that i have updated all the supporting library to latest version like play services library and firebase library also other third party libraries into latest version.

user_32798290
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