To have a worker thread with Message Queuing and message loops

Both the message queue and message loop for Android are specific threads, and one thread can have a message queue and a message loop, and a particular thread's message can only be distributed to this thread, and cannot be communicated across threads and across processes. However, the worker threads created by default do not have Message Queuing and message loops, and if you want the worker thread to have Message Queuing and message loops, you will need to call Looper.prepare () to create the message queue in the thread and then call Looper.loop () to enter the message loop. Here are the worker threads we created:

    class extends Thread {          public  Handler mhandler;            Public void run () {              looper.prepare ();               New Handler () {                  publicvoid  handlemessage (Message msg) {                      //  processing the received message                   }              };              Looper.loop ();          }      }