Adding a .jar in android in react-native, error Field name '??' cannot be represented in dex format

Question

I'm following adding library .jar file in android folder in react-native in "https://stackoverflow.com/questions/16608135/android-studio-add-jar-as-library" with second answer. in third step "gradlew assemble", I always encounter the error "Field name '??' cannot be represented in dex format." in Image and there's no information of it. should I install android again? What can I do?enter image description here

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Answer 1

In order to add .jar files to your React Native project , you have to configure android/app/build.gradle.

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "com.facebook.react:react-native:+"  // From node_modules
}

For more options to add .jar file, refer this
Also don't forget to specify the correct dir or create a dir libs under android/app and add your files there.