Listview scrolling very slow and jerky.

[Nick_F_2]

in previous versions of XDK I have build a number of Listviews and they scroll smoothly and quickly and they contain upwards of 100 entries.

In version 2611 and the previous version, I have created a Listview with JQuery and JQuery Mobile. The Listview contains 15 Elements each with a heading and 2 input boxes.

Scrolling is really clunky. Scrolling does not scroll with a sweep of the finger but requires constant moving with screen touch to move it along, previously a big swipe would scroll many of the lit view items in one go. Also the fixed header will occasionally disappear so I have to scroll in the opposite direction to get it back. It has the save button on it.

[Nick_F_2]

The header disappears when I select and input box and the keyboard appears which pushes the header off the top of the page. It re-appears when I close the keyboard, but the scrolling is still clunky.

[PaulF_IntelCorp]

Build the app using Crosswalk. If you run the app in App Preview it is running in the "native" webview. Run it using the Debug tab for a look at how it response in the Crosswalk webview.

[Nick_F_2]

Hi Paul

This is a compiled app, not using App Preview. The issue is in IOS currently, CrossWalk and Android build both have smooth scrolling.

[PaulF_IntelCorp]

Nick, did you build your UI by hand or by using App Designer (the UI editor)? If you used App Designer, did you "upgrade" the problem app from a previous version of the XDK?

[Nick_F_2]

Hi Paul
I'm using App Designer however as mentioned in a previous forum topic I had to build the list view manually because any changes made in designer to the listview blew away the code in the listview for the input elements and replaced them with <p>.

 

[PaulF_IntelCorp]

Let me ask someone here who has a deeper knowledge of the list views. In general, our experience with jQuery Mobile is not good. I'll see what his suggestion is.

[PaulF_IntelCorp]

Nick, quoting engineering:

If performance is a priority, jQuery Mobile is not the framework for you.

They recommend using Framework7 for best listview results, but any of the other options should give better results than jQuery Mobile.

[Nick_F_2]

OK Paul, thanks for the heads up.