Android Posting code to main thread using native java calls, aka handlers simplified with block calls posted to another thread

handleThread.java

//You will want to create a Handler on the thread you wish to post code too.
// This makes Android development using code blocks far easier just like it can be on iOS.

public Handler mThreadHandler;

public void setupHandlerFromThreadMain() {
   //Looper.prepare();
   //if you are setting this up from the Main thread, then there is already a looper.
   mThreadHandler = new Handler();
   //Looper.loop();
}

public void createBackgroundThread() {
   new Thread(new Runnable() {
       @Override
       public void run() { backgroundThread(); }
   });
}

public void backgroundThread() {
    //call back to the mThreadHandler
    mThreadHandler.post(new Runnable() {
      @Override
      public void run() {
          //block of code you want to run on another thread.
          //calls to UI Functionality
          mainThreadOnly();
      }
    });
}

public void mainThreadOnly() {
  if (Looper.getMainLooper().getThread() != Thread.currentThread())
  {
     Log.e("MODULE", "Not running on main thread error!");
     throw new IllegalThreadStateException("Needs to be on the main ui thread");
  }

}