CodeSign error: a valid provisioning profile is required problem in XCode

The above error pop-ups when you try to build iPhone application for the device. It means that the provision name in XCode project settings does not match .provision file installed in XCode Organizer (device manager). Usually this happens when you have downloaded XCode project created by someone else.

It should be possible just to go to XCode -> Project -> Project settings and chose a valid code signing profile (Code signing -> Code signing identity drop down should have been populated from the choices available in XCode organizer). However, it seems that there is a bug and always changing this setting does not have effect. Based on reports, it looks XCode project setting updater is confused about something and does not update the setting correctly.

The hardcode workaround is to edit your XCode project .xcodeproj file manually. You do not need to close down XCode for this (it will automatically ask to reload after the file is saved). You may see duplicate entries of  XCBuildConfiguration. You need to hunt down one with old (incorrect) values and manually copy-paste in correct values. You can get the correct values from XCode organizer.

For example, I had to edit in :

	CODE_SIGN_IDENTITY = "iPhone Developer: Mikko Ohtamaa (XXXYYY)";
	"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer: Mikko Ohtamaa (XXXXYYY)";
...
                PROVISIONING_PROFILE = "7572BAC6-4F0C-46D3-B96F-XXXXXYYY";
	"PROVISIONING_PROFILE[sdk=iphoneos*]" = "7572BAC6-4F0C-46D3-B96F-XXXXXYYYY";

manually to the file, replacing the old values for these settings. Note that values may be in many lines.

Hope this helps someone.

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Developing and distributing QT applications for Nokia… not yet!

This information was posted to Phonegap Google groups also.

Next N900 release (PR1.2) will include QT 4 in the default install. It has been delayed due to various problems observed in the leaked beta.

Also, N8  will be the first device supporting Qt out of the box. It is not shipping yet.

Nokia Qt SDK should allow unified Qt apps for Symbian and Meego:

• http://www.forum.nokia.com/Tools_Docs_and_Code/Tools/IDEs/Nokia_Qt_SDK/
• http://conversations.nokia.com/2010/04/27/nokia-rolls-out-qt-sdk-for-…

It is not yet possible to deploy Qt apps through OVI store, so targeting third party apps to Nokia Qt is kind of pointless. If you need to develop to Nokia using a web framework, don’t rely on native QT Webkit, but target to Nokia WRT  instead.

Nokia bought Qt in January 2008. It has taken over two years to ship the first Qt enabled mobile phone. Meanwhile, Apple has released App Store and risen to be the leading smartphone provider with its iPhone…. talk about slow development and the lack of leadership. So the hype around “QT will solve everything” is still just hype… they still don’t have nothing solid out there.

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SDK released – Python in iPhone?

I just read waffle’s blog entry about iPhone SDK release. Looks like Objective C is the only supported language by default (I am just downloading SDK).The comments speculated that embedding Python is not possible due to size constraints. Bollocks I say =) Python for Series 60 phones is 500 kb download without trimming. It’s less than the size of HTML page you are viewing now – RAM footprint is even smaller) If Series 60 phones, which have much more modest hardware specifications, can run Python it shouldn’t be a problem for iPhones either.

Why Apple didn’t add additional language support by default? Well they seem to have their hands full to get SDK out at all (delays) so we shouldn’t expect to have perfect set in 1.0 release.

Now, who wants start a porting project with me?