线程从按钮单击开始，以另一个按钮单击结束线程

Question

先生 请帮我添加一个线程，该线程从按钮单击开始，并以另一个按钮单击结束线程。在两者之间，我有一个声音播放，直到线程停止。

Answer 1

你可以试试这个简单的代码：

    final volatile boolean toExit = false;
    final Thread t = new Thread(new Runnable() {
        @Override
        public void run() {
            while(!toExit){
                // Your code
                Thread.sleep(100);
            }
        }
    });
    findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            t.start();
        }
    });
    findViewById(R.id.button2).setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View arg0) {
            toExit = true;
        }
    });

单击按钮 2 后线程将停止并运行到 while(!toExit) 。

Answer 2

线程停止方法已弃用。最好的解决方案是在运行方法中使用布尔变量。

您的线程：

public class MyThread implements Runnable {
private static final Logger LOGGER = LoggerFactory.getLogger(IndexProcessor.class);
private volatile boolean running = true;
public void terminate() {
    running = false;
}
@Override
public void run() {
    while (running) {
        try {
            //Your code that needs to be run multiple times
            LOGGER.debug("Processing");
        } catch (InterruptedException e) {
            LOGGER.error("Exception", e);
            running = false;
        }
    }
}
}

在您的活动中：

MyThread t=new Thread();

 findViewById(R.id.button1).setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View arg0) {
        t.start();
    }
});
findViewById(R.id.button2).setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View arg0) {
        t.terminate();
    }
});

Answer 3

使用以下代码

public class SomeBackgroundProcess implements Runnable {
Thread backgroundThread;
public void start() {
   if( backgroundThread == null ) {
      backgroundThread = new Thread( this );
      backgroundThread.start();
   }
}
public void stop() {
   if( backgroundThread != null ) {
      backgroundThread.interrupt();
   }
}
public void run() {
    try {
       Log.i("Thread starting.");
       while( !backgroundThread.interrupted() ) {
          doSomething();
       }
       Log.i("Thread stopping.");
    } catch( InterruptedException ex ) {
       // important you respond to the InterruptedException and stop processing 
       // when its thrown!  Notice this is outside the while loop.
       Log.i("Thread shutting down as it was requested to stop.");
    } finally {
       backgroundThread = null;
    }
}

希望这对你有帮助