Android - How to create multiple threads to run at background?

Question

I am new to Android, but I ran into this problem... I need an infinite loop to run some process in the background, while another infinite loop to accept some socket connection, and then when a button clicked, I need to make a socket connection to some server.

Almost all the example and tutorial I can find are showing how to create one single thread.

I have try to use runnable (this seems to run at foreground?)

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

and I have tried to use AsyncTask (this run at background, but only one AsyncTask per activity?)

private class Run extends AsyncTask<Void, Void, Void> {
  protected Void doInBackground(Void... params) {
  }
}

but whatever I do, my program only execute the first thread.

My question would be, is it possible to have multi-thread running multi-infinite loop within one activity? If is, how?

Solution

Yes, you can create multiple threads. You can implement the Runnable interface.

    new Thread(new Runnable() {
        public void run() {
            while (true) {
                //code something u want to do & it will run infinitely.
                //Remove the infinite loop for running finite set of operations.        
                Log.i("Thread", "Running parallely");
            }
        }
    }).start();

Also, please note that the above thread run indefinitely. If you want to do any finite operations, just put the code inside the run method.