@Override
            public void run() {
                // Display the text we just generated within the LogView.
                appendToLog(outputBuilder.toString());
            }
Formats the log data and prints it out to the LogView.

@param priority Log level of the data being logged.  Verbose, Error, etc.
@param tag      Tag for for the log data.  Can be used to organize log statements.
@param msg      The actual message to be logged. The actual message to be logged.
@param tr       If an exception was thrown, this can be sent along for the logging
                facilities
                to extract and print useful information.
MultiWindowPlayground/Application/src/main/java/com/example/android/common/logger/LogView.java