27 Mar 2012 5:53 AM #1
Render EXT JS 4 web application in ipad2
We are developing an extjs 4 web application for desktop which mainly contains charts and a simple form. Our client had asked us to analyse if this renders properly without a separate IPAD2 application.
we are exploring the feasibility of by applying responsive design principles using HTML5 media queries in EXTJS4.
a) Any thoughts on this feasibility using EXTJS 4
b) is it possible to apply any framework for any touch events by using EXTJS4 like above.
c) Do we need to use Sencha touch only for both desktop and IPAD2 applications.
thanks in advance
27 Mar 2012 7:44 AM #2
- Join Date
- Mar 2007
- Gainesville, FL
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Ext JS 4 is not supported for mobile devices.Mitchell Simoens @LikelyMitch
Sencha Inc, Senior Software Engineer
Check out my GitHub, lots of nice things for Ext JS 4 and Sencha Touch 2
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27 Mar 2012 10:44 AM #3
a) ExtJS 4 will almost certainly render and "work" on the iPad. However, many of the touch events you expect on a mobile device will not wire correctly into your application.
b) Not that I've seen... but I suppose anything is possible. Again, it's not going to be something supported directly by Sencha
c) Our approach to building apps is that you should design separate desktop (ExtJS) and mobile (Sencha Touch) apps.
I don't want to get into a flame thread about "why this" or "why not that", but I hope my answers explain a bit more about our recommended approach.
29 Mar 2012 12:20 AM #4
Honestly, I develop apps with both ExtJS and Sencha Touch and I just don't understand sencha's policy. Maybe you need to do a blog post outlining it again, because I just don't understand the logic.
1. ExtJS earns Sencha money, ST doesn't. Tablets are going to displace desktop browsers to a large degree. If sencha doesn't make extjs tablet-friendly, it's going to see revenues drop. Or is sencha going to suddenly start charging for ST? Is it going to gradually deprecate ExtJS? There seems to be no cohesive strategy across ExtJS and ST. It's like the products are developed by different companies.
2. ST struggles to make effective use of the horizontal space of a tablet. It doesn't even have a built-in grid control. Tablet UI is much closer to desktop browser UI than to phone UI. Even though the profiles help the basic controls in ST are not meant for tablet-sized screens. ExtJS is a closer fit, but its controls are too small in the default themes, and there are a few cases where it needs to adapt the UI (e.g. column menu should be activated by long-press instead of dropdown button).
3. ST doesn't run in most desktop browsers, so any app that you need to do on the desktop and on the tablet you have to build twice. Most developers can't afford to do that. Hence most developers build an ExtJS app and mess around with it until it runs "ok" on an ipad. No matter what Sencha says, we simply don't have the choice to build two apps. Either ST must be uplifted so it can be used on the desktop, or ExtJS needs to have a "mobile mode".
2 Apr 2012 8:42 PM #5
3 Apr 2012 5:47 AM #6
Thanks to everyone for the useful information. Sencha forums are the best forums I have ever seen to find information and appreciate all the folks who spend their time to help others.
we were in limbo to take a decision on this. we tested our EXTJS application in ipad2 through wi-fi but didnt work properly without touch events also.
We are now clear that we need to find options and educate the customer about 'single' or 'two applications' if they want mobile presence. There are two more customers who are discussing this kind of requirement.
With the buzz on 'cross browser cross device using HTML5' going on everywhere, customers are going to ask for single application to render in different devices (including desktop) thus not only saving cost but also make their presence everywhere quickly.
Not sure if sencha can help to solve this problem in future. Sencha's - EXTJS and ST are very powerful and innovative products. Adding this kind of feature will surely help all.
29 Jun 2012 1:34 PM #7
Its not just 2 applications to be developed.
Our customers want the desktop app experience on their tablet but they expect a different experience on the mobile due screen real estate.
Simply we are looking down the barrel of coding 3 apps which is cost prohibitive.
We are considering writing our own extension to EXTJS to make it usable on tablet so we only have to deal with 2 apps.
Touch framework is missing so many features required for desktop on a tablet.
Doesn't even have basic resize or expand/collapse for containers or fieldsets.
Given the level of extensions required for us to make the Touch framework able to deliver our desktop app on the tablet we are facing the ExtJS challenge on tablet.