I’m trying to implement file upload functionality to Google Drive in my Android application but running into several issues. I followed the official documentation but encountered problems during project setup. When trying to configure the Android project, I couldn’t locate the required options in Eclipse, so I installed additional Google plugins. However, this caused Eclipse to throw errors, forcing me to update the SDK. The SDK update broke all my existing projects, so I had to revert to the previous version.
Now I’m getting a runtime error when launching the app:
java.lang.NoClassDefFoundError: com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential
at com.myapp.ui.HomeActivity.onCreate(HomeActivity.java:38)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
The error occurs at this code:
private GoogleAccountCredential userCredential;
userCredential = GoogleAccountCredential.usingOAuth2(HomeActivity.this, DriveScopes.DRIVE);
What’s the proper way to set up Google Drive integration and resolve this credential class issue?
Eclipse poses significant challenges, particularly with library dependencies. Transitioning to Android Studio is beneficial as Google has shifted support there entirely, alleviating many issues you may encounter, such as handling the Drive API libraries. The dependency management in Android Studio with Gradle simplifies installations, ensuring compatibility. Additionally, ensure that you’ve included the google-api-client-android library alongside the Drive API. The GoogleAccountCredential requires specific configurations, which can sometimes go awry in Eclipse. Migrating your project is highly recommended; the migration tool usually handles the majority of the process seamlessly.
eclipse is a nightmare for android dev now. that error means ur missing the google-api-client dependency in ur libs folder. download the full google api client bundle and manually add all the jars - the automatic plugin installs often miss things. also check for conflicting google play services versions.
That NoClassDefFoundError means you’re missing dependencies. I’ve been there - spent hours debugging the same thing when I first added Google Drive API. First, check your build.gradle. You need both the Google Drive API client library AND the Google Play Services Auth library. GoogleAccountCredential isn’t in the basic Drive API - it’s part of the broader Google API client library. Since you mentioned reverting your SDK, that’s probably what broke it. There are known compatibility issues between certain Google library versions and older Android SDKs. Make sure your API levels match up. If you’re using ProGuard for release builds, that could also be the culprit. It sometimes strips out classes that look unused but are actually needed at runtime by Google libraries. Add the proper keep rules for Google API classes in your ProGuard config.