How to create a Looper thread, then send it a message immediately?

Question

I have a worker thread that sits in the background, processing messages. Something like this:

class Worker extends Thread {

    public volatile Handler hand         


        

Answer 1

take a look at the source code of HandlerThread

@Override
     public void run() {
         mTid = Process.myTid();
         Looper.prepare();
         synchronized (this) {
             mLooper = Looper.myLooper();
             notifyAll();
         }
         Process.setThreadPriority(mPriority);
         onLooperPrepared();
         Looper.loop();
         mTid = -1;
     }

Basically, if you are extending Thread in worker and implementing your own Looper, then your main thread class should extend worker and set your handler there.