Android Junit TestExecutionListner to get result

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {
   public static void main(String[] args) {
      Result result = JUnitCore.runClasses(TestCase.class);
      
      StringBuilder bericht = new StringBuilder();
      for (Failure failure : result.getFailures()) {
    	  bericht.append(failure.getTestHeader());
    	  bericht.append(System.getProperty("line.separator"));
    	  bericht.append(failure.getMessage());
    	  bericht.append(System.getProperty("line.separator"));
    	  bericht.append(failure.getTrace());
    	  bericht.append(System.getProperty("line.separator"));
       }
       if (result.wasSuccessful()) {
    	   bericht.append("Test ohne Fehler abgeschlossen");
       }
       
   }
}