Java Development

[smcbride15]

Hi, I'm trying to create a dialog with only a cancel button. I've extended the dialog class to do this in the constructor:

public SessionDialog(String title){

super(dialogResponse, title, dialogResponse, null, dialogResponse);

Manager manageLayout = new HorizontalFieldManager( VERTICAL_SCROLLBAR);

ButtonField b =new ButtonField("Cancel",Field.FIELD_HCENTER);

manageLayout.add(b);

add(manageLayout);

}

And call it like this:

SessionDialog d =new SessionDialog( "Please Wait, creating session");

d.show();

However I still get a dialog with ok and cancel buttons, how do I just get the cancel button to show?

Thanks

[simon_hain]

i would suggest to use a standard popupscreen. dialog is a specialized popupscreen, if you need something out of its scope its better to do it yourself

[smcbride15]

Can you give me an example of a PopUpScreen with only a cancel button and how to show it? I have a custom update method in my Dialog class which I'm rather keen to retain so I'd really like to solve this by keeping my Dialog class if at all possible

Thanks

[peter_strange]

You might find the Please Wait screen in here useful:

http://supportforums.blackberry.com/t5/Java-Development/Sample-quot-Please-Wait-quot-screen-part-2/t...

[rrey2279]

Dialog with Cancel button only:

UiEngine ui = Ui.getUiEngine();

Dialog cancelPrompt = new Dialog("Loading...", new String[] { "Cancel" }, new int[] { Dialog.CANCEL }, Dialog.CANCEL, Bitmap.getPredefinedBitmap(0));

ui.pushGlobalScreen(cancelPrompt, 1, UiEngine.GLOBAL_MODAL);



// use cancelPrompt.close() to close the Dialog automatically from another thread or method

[smcbride15]

Ok thanks for the replies, RE the last response, how do I add a listener to that Dialog for the cancel button. Also how do I pop that Dialog from a background thread?

many thanks

[smcbride15 · Accepted solution]

Figured both out. Listener can be created during the Dialog creation like so:

Dialog cancelPrompt = new Dialog("Loading...", new String[] { "Cancel" }, new int[] { Dialog.CANCEL }, Dialog.CANCEL, Bitmap.getPredefinedBitmap(0)){

public void fieldChanged(Field field, int context)

 {

System.out.println("something happened!");

 }

};

Thanks for your replies guys