androidreact-nativegradleexpo

Namespace not specified. Please specify a namespace in the module's build.gradle file

I keep getting an error when I tried to build my react-native app with npx expo run:android

* What went wrong:
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Could not resolve all dependencies for configuration ':app:debugRuntimeClasspath'.
   > A problem occurred configuring project ':react-native-webview'.
      > Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
         > Namespace not specified. Please specify a namespace in the module's build.gradle file like so:

           android {
               namespace 'com.example.namespace'
           }

However, in android/app/build.gradle

...
android {
    ndkVersion rootProject.ext.ndkVersion
    compileSdkVersion rootProject.ext.compileSdkVersion
    namespace 'com.wilburcoding.BirdSoundSearch'
...

There doesn't appear to be any answers online that have valid/working answers to this problem. It does appear this issue may have originated from react-native-webview. Is this an issue with the dependency or a gradle issue?

Solution

  • Newer versions of React Native will require a namespace be set in build.gradle files. To correct the issue, you should try bumping the dependency in question (in this case, react-native-webview) to a newer version which contains the namespace entry. You can also try removing namespace from android/app/build.gradle, as I don't believe it's strictly needed in React Native 71 or 72.

    To learn more about why these changes have been made, take a look at this GitHub discussion: https://github.com/react-native-community/discussions-and-proposals/issues/671