In Blackberry OS 5.0 , Is there any UI Handler to update UI of the Screen

问题

I am developing an app with Blackberry OS 5.0. Is there any UI Handler(like in android) which updates the UI of the present screen. I am using thread's in my app,when a thread is running at the same time i need to update my UI of the screen. Right now,after my thread is completed, i am popping the present screen and push the new screen again. Then only my UI is getting updated. Is there any alternative way to update UI when thread is running.

回答1:

Yes, there's a much better way of doing it: Perform your updates on the UI thread. Example:

Application.getUiApplication().invokeLater(new Runnable(){

    public void run(){
        editField.setText("My updated text");
    }
}

回答2:

You need to invalidate the UI and update the UI you can also delete all Ui and reload it for particular condition. like getmainManger.deleteAll();

This method delete all UI and you can load new UI and update all UI.

来源：https://stackoverflow.com/questions/12088189/in-blackberry-os-5-0-is-there-any-ui-handler-to-update-ui-of-the-screen