Three20 and iOS 4

I'm trying to complie my app for iOS 4. It includes Three20. I've set the base SDK to "iPhone Device 4.0" and the Deployment Target to "iPhone OS 3.0" but I get this message:

"_OBJC_CLASS_$_TTURLRequestModel", referenced from:
    _OBJC_CLASS_$_MockPhotoS开发者_Go百科ource in MockPhotoSource.o

What do I have to do?

I think this thread explains most of the problems.

http://groups.google.com/group/three20/browse_thread/thread/90a57d469dfcc32d/85750d0c9b7c79de?lnk=gst&q=ios4#85750d0c9b7c79de

Also the updated code is available here..

http://github.com/ECP/three20

Hope this will help.

Thanks.

I had the same problem. I fixed it by ensuring that "Build active architecture only" (ONLY_ACTIVE_ARCH) in the xcode project properties, is checked in both the Three20 project and my project.

I was pulling my hair out as well since adding three20 correctly to your new iOS4 with really basic instructions listed here: http://github.com/facebook/three20 did not work as well.

Issue: Can compile newly three20 to your iOS project and got this error: Can't find #import "Three20/Three20.h".

Here is the best solution for those have the same issue:

1. Add your three20 to your iphone project path like this:

    [yourProjectPath]/[iOSProjectName]/three20/..
   

2. cd three20 dir

3. run:

   python src/scripts/ttmodule.py -p [yourProjectPath]/[iOSProjectName]/[iOSProjectName].xcodeproj Three20 -c Debug -c Release
   

4. go to XCode and do a build now.

Thanks to jverkoey for adding this in, you saved us a lot of headaches.

http://github.com/facebook/three20/commit/0814b1c149cbe987557c88a271f999c3f9f3ae64