Question

thread = new Thread()
        {
            @Override
            public void run() {
                while(!requestedToExit)
                {
                    SystemClock.sleep(3000);
                    Log.d("debug", "in");
                }
            }
        };

So a button got an event, Each time I click on it it’s start the thread (if the previous thread is not alive).

So I tried use thread.start() but it throw thread already started. I tried .run(), nothing happens, I also tried each time I click on the button, and it’s possible to run it again, create a new thread and start it : nothing.

Some ideas ?

---

Using Runnable :

   r= new Runnable(){

            public void run() {
                while(!requestedToExit)
                {
                    Log.d("debug", "in");
                    SystemClock.sleep(3000);

                }
            }
        };

Then I use in my listener :

thread = new Thread(injection);
thread.start();

But I only see the debug the first time, he never enter into it after.

Thanks in advance

Answer 1

From the JavaDoc –

It is never legal to start a thread more than once. In particular, a
thread may not be restarted once it has completed execution.

Instead, use java.lang.Runnable and create a new thread to run it when you have to.

What you need to do is:

Runnable r = new Runnable() {
    public void run() {
        ....
    }
};

Then, when you want to start it:

Thread t = new Thread(r);
t.start();

You need to always create a new thread to run that one runnable.