如何在Java中停止正在运行的音乐线程？

Question

I have a class that plays background music on infinite loop for a game. I want it to stop when another class calls the stopPlaying() method on the BackgroundMusic object. According to Oracle docs, there is no way to stop a thread in Java.

It said to use a variable that it checks and stops when the variable is a certain value. I tried making a boolean running that gets set to false when I call stopPlaying() and tried making the while loop have running as the condition instead of true, but that did not work without a delay. (Message edited from before)

I would put my class in here, but this site keeps saying it's not formatted properly, and I've done this before (pasting from Eclipse). I put it on PasteBin: http://pastebin.com/edCH2DXE

Answer 1

It's kind of a big hammer, but you can interrupt the thread by calling musicThread.interrupt() . This will cause isInterrupted() to return true for the music thread. If the thread was doing some blocking I/O at the time, this might cause InterruptedException to be thrown, so you need to catch that as well:

  try {
    while (!Thread.currentThread().isInterrupted()) {
       // play music
    }
  } catch (InterruptedException ex) {
    // any cleanup necessary
  }

Again, it's a big hammer, and it's better to use the boolean flag approach if you can.