Process JUnit Failure Trace

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I am using Robotium to write automated test cases for android applications and i would like to visualize the results of said tests.

So in case there occurs a failure in one of the tests, i want to

programmatically search the JUnit "Failure Trace"

in order to work with that information.

Is there any smooth way to get the Failure Trace? I was thinking of saving the error messages in an ArrayList and work from there after the Robotium test class finished.

I'm grateful for any hint. Thanks in advance!