Run Handler messages in a background thread

Question

I want to run some Runnable in a background thread. I want to use Handler because it's convenient for delays. What I mean is

handler.post(runnable, delay); 

Where runnable should be run in background Thread. Is it possible to create such Handler? Is there a "background" Looper somewhere or how can I create it?

P.S. I know how to do it with a custom class extends Thread but it requires a little more coding effort than doing it the handler way. So please don't post other solutions or something like

handler.post(new Runnable() {     @Override     public void run() {         new Thread() {             @Override             public void run() {                 //action             }         }.start();     } }); 

I just wander if Handler can do it the "clean" way.

Answer 1

You can simply do this:

private Handler mHandler;  private HandlerThread mHandlerThread;  public void startHandlerThread(){     mHandlerThread = new HandlerThread("HandlerThread");     mHandlerThread.start();     mHandler = new Handler(mHandlerThread.getLooper()); } 

Then invoke with:

mHandler.postDelayed(new Runnable() {         @Override         public void run() {           // Your task goes here         }     },1000);