问题
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_$_TTURLRequestModel", referenced from:
_OBJC_CLASS_$_MockPhotoSource in MockPhotoSource.o
What do I have to do?
回答1:
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.
回答2:
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.
回答3:
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:
Add your three20 to your iphone project path like this:
[yourProjectPath]/[iOSProjectName]/three20/..cd three20 dir
run:
python src/scripts/ttmodule.py -p [yourProjectPath]/[iOSProjectName]/[iOSProjectName].xcodeproj Three20 -c Debug -c Release- 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
来源：https://stackoverflow.com/questions/2999844/three20-and-ios-4