Background thread state when activity is stopped or destroyed

问题

Lets us say, we start some threads from the main UI thread. Now suppose the activity gets stopped or destroyed.

onClick () { /* Activity onClickListener for some button */

new Thread (new MyThread (new Handler ())).start ();
}


private class MyThread implements Runnable  {

    Handler mUIHandler;

    MyThread (Handler h) {
    mUIHandler = h;
    }

    public void run () {

     /* Long operation */

     /* Post status update to UI */
     Message msg  = mUIHandler.obtainMessage ();
     msg.obj = String.valueOf (statusCode);
     mUIHandler.sendMessage (msg);

    }

1) What would happen to those threads ?

2) From those threads, suppose I would br posting some messages to the UI thread using the UI thread Handler object, What would happen to those UI updates then?

来源：https://stackoverflow.com/questions/31134861/background-thread-state-when-activity-is-stopped-or-destroyed