Exception with android jar imported to another project

Question

I am writing an android app as well as a web-based interface for a project - both of which rely on AWS (SNS, SQS and S3). I created wrapper classes for AWS (SNS, SQS and S3), made it into a Java project, exported that into a JAR file - AWSCommons.jar and am now trying to leverage this jar file for both the web-interface and the android app for my project.

I did test that I was successfully able to use AWS from within the unit tests I had in my AWSCommons project. But when I try to run my android app which uses the AWSCommons.jar jar file, I get this runtime exception:

FATAL EXCEPTION: main
E/AndroidRuntime(15957): java.lang.NoClassDefFoundError: 
E/AndroidRuntime(15957): java.lang.NoClassDefFoundError: com.amazonaws.auth.BasicAWSCredentials
E/AndroidRuntime(15957):    at com.raasio.communication.messaging.internet.AmazonClientManager.validateCredentialsAndInstantiateClient(AmazonClientManager.java:65)
E/AndroidRuntime(15957):    at com.raasio.communication.messaging.internet.AmazonClientManager.getSnsClient(AmazonClientManager.java:54)
E/AndroidRuntime(15957):    at com.raasio.communication.messaging.internet.AWSProxy.<init>(AWSProxy.java:32)
E/AndroidRuntime(15957):    at com.example.raasio.Raasio.onCreate(Raasio.java:79)
E/AndroidRuntime(15957):    at android.app.Activity.performCreate(Activity.java:4465)
E/AndroidRuntime(15957):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
E/AndroidRuntime(15957):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
E/AndroidRuntime(15957):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)

Also, this is what it reads on line 65 of my AWSCommons' AmazonClientManager.java:

AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);

...and i have imported the BasicAWSCredentails class as expected. Thanks for your help.

Answer 1

You may be experiencing issues related to changes in ADT v22. You may find this blog post useful in correcting your problem:

Running AWS SDK for Android samples in Eclipse with ADT v22