code: public void printException(Throwable t) {
          StringWriter stringWriter = new StringWriter();
          PrintWriter printWriter = new PrintWriter(stringWriter);
          t.printStackTrace(printWriter);
          outputText(
                  (TextView) findViewById(R.id.textView),
                  String.format(
                          "Got an exception from running samples. Exception details:\n%s\n",
                          stringWriter.toString()));
      }
docs: Prints out the exception information .