After creating a new Sencha Touch app with 'sencha generate app', folder resources/loading contains default "Sencha-style" PNG images for the startup screens of native iOS apps, both for iPhone and iPad -- it now has all the necessary versions of those except the Defaultemail@example.com file required for iPhone 5-ready native iOS apps.
Steps to reproduce the problem:
Create a new Sencha Touch app with 'sencha generate app'
Build the app with 'sencha app build native'
Load the app on iPhone 5 and start the app
The result that was expected:
Even with the default Sencha resources the app is able to start using the full screen resolution on iPhone 5 (i.e. 640x1136)
The result that occurs instead:
The application starts fine, but in the "iPhone 4(S)"-resolution (i.e. 640x960)
Manually create a 640x1136 PNG file, name it Defaultfirstname.lastname@example.org and copy it to the Sencha Cmd installation (sub)folder, at the following (sub-)path: ./Cmd/188.8.131.528/plugins/touch/current/templates/App/resources/loading
You may use the attached PNG file for this purpose (if Sencha guys don't mind this quickly added unofficial version created from their other default PNG files)
I was able to use your steps and get a test project to show up with full iPhone 5 resolution in the simulator, but this involved making a 'native build' as per your steps, and dragging the file into the simulator's Application folder. Is there a way to build an app with
sencha package run packager.json
that runs in the simulator/device and includes this setting for the iPhone 5 resolution? When I tried, I was still getting 3.5" retina size (4/4s), even with the same project.
I should be able to get back to you request, to try myself and let you know. But there will be a delay on my side with that, I am sorry. (I am more focused on developing native iOS apps with Sencha Touch using Windows platform. I use OS X too, thus should be able to check on it as well, later.)
If the matter is really urgent to you, then I suggest you do a little bit of experimenting yourself, if you're not afraid of it. As a hint, I suggest you check my answer to huberte on a parallel thread, where I commented to him on a scenario similar to yours, though you will need to replace the step of adding iTunesArtwork with a step of adding Defaultemail@example.com to the appropriate folder inside the .ipa archive (the folder where other "Default" PNG files are located). I believe it should be relatively easy to figure out...