Cascades Development

[setiawand]

how to implement "release to refresh" action on ListView ?

[soaman]

Very good question.

[borceg]

I would love to know the same

[mgoulet]

Hi there,

I am assuming you mean implementing the action of "pulling down" the list view in order to post a refresh request to the model shown by the list view;

There are no such components 'out of the box' for this; You would need to implement this using a CustomControl with a ListView in it and implement your own signals depending on the scrolling position of the user (if 'scroll down' is triggered and user is at the top of the list, fire a refresh signal).

If you feel that this functionality should be available in the API, I would recommend posting a feature request on the Issue Tracker:
https://www.blackberry.com/jira/secure/Dashboard.jspa

Cheers,

Martin

[dkonigs]

Well, there is no built-in control to completely implement this.  But there is something that can at least meet you half-way. ListView now has a property where you can associate a "leading visual" with it:

https://developer.blackberry.com/cascades/reference/bb__cascades__listview.html#leadingvisual

I think this may be where you'd hook in a "pull to refresh" control.

[Pumano-]

Pull to refresh is patented feature?

[soaman]

I don't think so.

I will check this leading visual property.

[Pumano-]

Today pull to refresh patented by Twitter, because they buy company (company have iOS twitter client with patented Pull to Refresh) owner of pull to refresh don't ask something for using this feature, but what Twitter thinking about it?

[Pumano-]

Maybe someone know more than I in this theme?

[soaman]

First findings:
When you touch and move the list, only inner parts (list items) move, so list doesn't change Y axis.

My opinion is that developer must extend ListView class in C++.