如何从android中的另一个方法调用线程内的run方法？

I want to make an quiz application in which the questions will be displayed every ten seconds. But when the user answers the question, I need to display the next question. For this I use threads. I have accomplished displaying questions in regular intervals, but when the user answers the question, it wait for the thread to complete. I want to stop the thread and start a fresh one on a button click. My code is given below:I want to make an quiz application in which the