I needed to create a framework (which requires a static library) for a project I'm working on. I used this tutorial to create the framework, then copied the static library into the project and it worked.
But, when I dragged the framework to an iOS project, it shows a ton of errors.
`Undefined symbols for architecture i386:"_OBJC_CLASS_$_SomeClassFromTheStaticLibrary",referenced from:_OBJC_CLASS_$_AnotherClass in MyFramework`
What I think is happening is that the iOS project wants to recompile the framework and it cannot, because it can't locate the static library. All errors disappear if I add the static library to the iOS project. This is what I want to avoid.
Basically I want to have the iOS project -> Framework -> Library instead of having the library in both the project and the framework.
I have tried adding the static library as a resource in the framework, but it didn't work.
I doubt this is possible. When you think about what is happening you will see the problem.
The framework is compiled and the static library is processed so that things like extra symbols are stripped out
The app is now compiled and linked against the framework which may or may not have had the symbols that the app is requiring
I did get this to work if ONLY the framework was using the static library (logical) but I can't find a way to share the code across the framework & the app.
If a symbol is hidden (either via Symbols Hidden by Default/GCC_SYMBOLS_PRIVATE_EXTERN being set to YES or __attribute__ ((visibility ("hidden"))) being applied to certain symbols), then that symbol will be available when statically linking the library, but not when dynamically linking the framework.
Ensure that the static library's symbols are not hidden, and you should be able to access them from your app.
I have followed this link to create custom framework. I have static library inside my framework and it works fine with that.
I have copied his steps in my blog for my understanding along with a script to make it universal.
Related
I have started a small collection of helper code in a Swift Package for my own needs. If i include this package in my main project using Swift Package Manger and try to build it using Xcode Cloud, i get the following error:
ITMS-90334: Invalid Code Signature Identifier - The identifier
'AppulizeStandardTools-55554944b34e30d285943c0fa8b9aecb5744a53e'
in your code signature for 'AppulizeStandardTools_BFA0AAD86B154A1_PackageProduct'
must match its Bundle Identifier 'AppulizeStandardTools'
I haven't set any identifiers or code signing manually with regards to the package and the Package.swift is very simple.
What am i doing wrong here?
I lost half a day trying to figure this out, documentation is not plentiful on it atm.
It appears to be related to how XCode Cloud handles the signing for dynamically embedded frameworks... Not ideal if you are using a microcomponent architectural pattern.
Fix for this:
Go into your main target (executable) -> Frameworks, Libraries and Embedded Content section -> Change your frameworks to:
Embed & Sign => Do Not Embed
Go to Build Settings for each Framework and change the Mach-O Type from Dynamic to Static
There are some implications about how this would effect device memory, I found it to be pretty negligible in my case.
I am being presented with a very interesting project. The task that I must complete is to figure out a way to allow a partner to be involved in an app without giving up their source code. The code will be included in the main bundle of the app so it is not dynamically stored. The partner has a fully functional app that is needed to be ran in a window within the main app at the appropriate time. I know having the partners create a web app would be ideal so it is treated like a webpage but I am more concerned with codes that must be written natively in iOS.
My question is what is the best way to go about solving this? In theory it is like an App within an App. Is there a way if they gave up their .app file I can include this in the bundle and then run it when I catch a certain event? Should I have the partners create their code in a framework and then import into the shell project? What is the best way to approach this problem?
If your 2nd-party doesn't want to provide you with the source code, why doesn't he compile it to object code then let you simply link it to your app?
By the way, at least on official (non-jailbroken) iDevices, apps can't 'embed' or 'open' one another in such a way - you can open an app programmatically if 1. it's a separate app 2. it has a registered special URL associated to its bundle.
Is there a way if they gave up their .app file I can include this in
the bundle and then run it when I catch a certain event?
No, you'll want to have them create a library instead. You can then include that library in your project.
Creating a library is as simple as:
Choose File->New...->Project... in Xcode.
Select the "Cocoa Touch Static Library" project template.
Add your code.
Build.
The result is a static library that you can add to your application(s). The library will contain the compiled code that you added, but doesn't include the source code. The library developer should provide whatever header files are necessary to use the code in the library.
An App within an App is possible however it requires a common data framework that allows one app to reference the same data without confusing the the source of and destination of the data.
Such a framework allows one app to interact with another app referencing the same data.
Is it possible to do this in such a way that the parent project does not need any settings that refer to the sub-library -- only to the parent library?
(For example, I want header search paths to be picked up automatically).
I think you are looking for a Framework, not actually a static library ( You will always need the symbol references aka headers when you use static libraries )
The solution that Apple gave us, is Frameworks.
You can checkout this GitHub project which contains an Xcode 4 template for creating iOS frameworks again.
Good luck!
I need to be able to write and read from a rtf file in iOS.
The omnigroup framework has the 2 classes i am looking for :
OmniUI/iPad/RTF/OUIRTFReader
OmniUI/iPad/RTF/OUIRTFWriter
I managed to build the frameworks but i cant figure out how to integrate theses classes in my own project.
I had the following frameworks to my project :
OmniAppKit.framework
OmniFoundation.framework
OmniBase.framework
I still get some undefined identifier such as :
RCS_ID("$Id$");
OBINITIALIZE
OMNI_POOL_START
Has anybody been able to use the omnigroup framework in your own project ?
Thanks,
Vincent
We do need some better documentation for this, but the TextEditor example app in OmniUI/iPad/Examples/TextEditor may be a good starting point for seeing how we include the frameworks in our apps.
In this particular case, you may prefer to pull out the OUIRTFReader class and any dependencies it needs from OmniAppKit and OmniFoundation into your project. updating the #imports to be "..." instead of <OmniThis/AndOmniThat.h>.
Perhaps you could try following the instructions given as part of this thread on the Omni Group forums. They appear to have been able to build the framework under the iOS 4.2 SDK.
I don't think you want the OmniAppKit framework, as that is just for the Mac.
I'm attempting to follow this tutorial 'Demystifying Mail.app Plugins on Leopard' to build a Mail.app plugin. Instead of using PyObjC I'm trying to use MacRuby. I've got MacRuby 0.6 loaded up and I've gotten to this step in the tutorial (PyObjC code):
MVMailBundle = objc.lookUpClass('MVMailBundle')
I've search the web a bit but can't seem to find any information about loading the private framework 'MVMailBundle' in MacRuby. Any ideas?
Thanks in advance - AYAL
I think the idea is that this plugin will be loaded into Mail.app, which will already have loaded the private framework in question. So we just want to look up a class at runtime (which is what that Python snippet is doing — not loading a framework). The way to do this in MacRuby is MVMailBundle = NSClassFromString 'MVMailBundle'.
(You will need to include framework 'Cocoa' in order to get the NSClassFromString method, but I assume you'll have already done this.)
MacRuby uses garbage collection and Mail doesn't. You can't load a GC bundle into a non-GC app. So this is a dead-end.