DDMS에서 로그를 확인하기 위한 메서드

    @SuppressWarnings("unused")
    private static void log(String logMsg) {
        Thread current = Thread.currentThread();
        long tid = current.getId();
        StackTraceElement[] stack = current.getStackTrace();
        String methodName = stack[3].getMethodName();
        // Prepend current thread ID and name of calling method to the message.
        logMsg = "[" + tid + "] [" + methodName + "] " + logMsg;
        Log.d(TAG, logMsg);
    }