Can I cancel previous Toast when I want to show an other Toast?

In my app, I construct a calendar widget for my activity, when I scroll it to previous or next month, I let it make a toast and show it. The question is, the toast need time to show, when I scroll it fast enough, for example, I scrolled to "2012/05" and "2012/06" and scroll to "2012/07" without pause, I have to wait the Toast of "2012/05", "2012/06","2012/07" to show one by one slowly. Seems like Android has an invisible queue to manage toasts how can I clean it and only show the last toast? Can I show a specific Toast immediately without waiting? I searched the "android.widget.Toast.java" and find a method `cancel()`, but unfortunately it does not work as follows. ``` if (t != null) { t.cancel(); } t = Toast.makeText(this.mContext, mHelper.getYear() + "年" + (mHelper.getMonth() + 1) + "月", Toast.LENGTH_SHORT); t.show(); ```