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How can I disable ARC for a single file in a project?
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Closed 9 years ago.
I'm a newbie to IOS technology. I have been developing an app, in which I have to add around 10,000 mkannotations to my map. So I prefer to use clustering algorithm (probably using k_means). However, I found this beautiful external library at (https://www.cocoacontrols.com/controls/adclustermapview)
When I complied the example framework of this project and ran it on simulator everything works fine, however, when I add the required files to my project as they described, it raises a lots of errors regarding
retain
release etc.
So I understand there is some issue with the arc compatibility in the project
Here are my questions
These retain, release methods being used in some project, does
that mean that they are developed with old versions of IOS?
If so, how do I resolve these error, other than manually removing them?
Is there a method in IOS, which allows me to compile a code
partially using one compiler and the remaining using other?
Select desired files at Target/Build Phases/Compile Sources in Xcode
PRESS ENTER
Type -fno-objc-arc
Press Enter or Done
In xcode Edit-Refactor-Convert to Objective-C ARC select your app then check button.Finally click save button.
These retain, release methods being used in some project, does that
mean that they are developed with old versions of IOS? NO
If so, how do I resolve these error, other than manually removing
them?
Is there a method in IOS, which allows me to compile a code
partially using one compiler and the remaining using other? You can disable ARC for some files.
This problem might be coming because you must be using ARC in your project while this framework is not. To remove ARC for particular classes go to Targets, then build phases tab, under the compile sources group add '-fno-objc-arc' as the compiler flag. This will make sure that ARC is skipped while compiling this class..
Related
I'm currently migrating my project to Swift3 as I know that there is one bug I have under iOS 10 that needs to be fixed.
So I installed iOS 10 on one of my devices.
Now I can't run my app on the device, getting the 'Could not find developer disk image' error.
So I downloaded the latest Xcode8-beta.
Now my code can't be compiled - I first have to convert it to the newest syntax.
So while fixing all the non auto-converted syntax issues, I'm getting errors for frameworks I'm importing, too:
"Module file was created by an older version of the compiler"
Which - to my understanding - means that this framework needs to be recompiled with the current version of XCode.
This would mean that I would have to cross my fingers that all the frameworks I use are up-to-date, or otherwise, fix those, too?
Is it not possible at all to use 'deprecated' frameworks?
Is this Apple being super strict to get rid of any Swift1/2 code as possible?
This would mean that I would have to cross my fingers that all the frameworks I use are up-to-date, or otherwise, fix those, too?
Is it not possible at all to use 'deprecated' frameworks?
Is this Apple being super strict to get rid of any Swift1/2 code as possible?
Yup. Swift 3 is it.
I feel bad for those that had to convert their C code to swift 2, and now swift 3 is coming xD
Hopefully they will make the transition easier with the final release version, and that shortly after that all of the major frameworks will have been updated (for you to recompile).
You need to recompile the frameworks. Even frameworks managed with dependency managers like Carthage (which recompile on each update command) are still having problems with XCode 8 Betas / Swift 3: https://github.com/Carthage/Carthage/issues/1440
I have a project previously built in iOS 4.3. When I tried to invoke the “ARC” conversion tool with
Edit > Refactor > Convert to Objective-C ARC
from XCode 4.5.2, the tool reports many errors. Some are supposed to be modified automatically by itself, for example the keywords autorelease/release/retain should not be used.
The errors seem too many (1,987 occurrences) to resolve by hand. Are there any configuration options that i am missing or should something else be done?
If you are using existing libraries you can simply not use ARC for those libraries and begin using it throughout your app by using a flag.
Add this to your library or files in question to ignore ARC
-fno-objc-arc
i think you have used any third party libraries, if you have used any third party libraries then it won't helps you.that means in this situation it wont automatically converts it to ARC.
Unfortunately ARC manages memory only for objective-c objects, if you have used any C or C++ files then in this case you have to handle memory management yourself
I have a project that is already transitioned to ARC. Now I'm trying to include an existing file from the other project, which is not using ARC and I want it to be ARC-compliant too: release-retains, [super dealloc]s gone from this file, quick fixes, other stuff "Convert to Objective-C ARC..." does.
The problem is I can't use the Edit->Refactor->"Convert to Objective-C ARC..." tool for this. If I select only this file in "Select Targets to Convert" screen I'm getting "Cannot Convert to Objective-C ARC" message because of errors like: "#synthesize of 'weak' property is only allowed in ARC or GC mode". But they are already in ARC mode indeed! Also numerous warnings: "Method possibly missing a [super dealloc] call"
If I select all files except marked with -fno-objc-arc while converting, I get only errors about weak properties.
Of course I can build and delete the release-retains manually but why to walk if there is a bus (Conversion tool)... So can I auto-transition a separate file to ARC?
Update: I do not want ARC to be turned off for this file with -fno-objc-arc flag, I want ARC used in this file.
If you insist on making Xcode do the work, create a new Xcode project and deselect "Use ARC" when creating it. Add the files to convert, and convert the project to ARC. Take the modified files and import them into your other project.
It's probably simpler, however, to convert the file manually. This is not difficult, even for a large file or an entire project. Just lean on the compiler: build your app, walk through the errors and simply delete all retain/release calls and convert any NSAutoreleasePools to #autoreleasepool {}. You may also need to add __bridge casts if interacting with core foundation types.
It sounds like you'll have to convert this file to ARC manually, instead of relying on the automatic conversion tool. You'll need to go through the file and remove all of the release, retain etc. I've done this before, and while it takes a while, it's not too painful. Rely on the error messages from Xcode to guide you what needs to be fixed/removed in the code.
Here's a couple of links I found that may help. Also look at Apple's ARC docs and WWDC 2011 talks (referenced at the bottom of the second link).
Xcode ARC conversion tool issue
http://blog.mugunthkumar.com/articles/migrating-your-code-to-objective-c-arc/
I am fairly new to iOS programming and I'm trying to make an iOS 5.1 app that communicates with a server to receive information from a database. I got the server returning the needed information from the database by following this tutorial:
http://www.raywenderlich.com/2941/how-to-write-a-simple-phpmysql-web-service-for-an-ios-app
But then I tried to follow a the other half of the tutorial by the same guy:
http://www.raywenderlich.com/2965/how-to-write-an-ios-app-that-uses-a-web-service
In this one we use JSON, ASIHTTPRequest and MBProgressHUD, but I get a lot of errors when I run this because ASIHTTPRequest is no longer supported in iOS 5.1.
Can anyone point me in the right direction here? I you can show me another tutorial that works for iOS 5.1 that would be great. I have looked but I can't find any.
Thanks
ASIHTTPRequest is most likely returning errors in your iOS 5.1 app because you're using ARC. ASIHTTPRequest wasn't written in ARC, which is why it's throwing tons of errors. But there's an easy workaround:
In Xcode 4's groups and files pane, select your project file at the top of the list.
Select your target towards the left hand panel.
You should now see a list of all the implementation (.m) files referenced and compiled throughout the course of the program.
Double click the implementation files for ASIHTTPRequest and add the following linker flag: -fno-objc-arc. This linker flag acts as a crossbridge between the old non-ARC files and your ARC-based project.
Although there may be residual warnings left, this trick should remove all other error messages associated with ASIHTTPRequest.
When I followed that same tutorial I got a lot of errors. and the build kept failing until I reliased it was because libz.1.2.3.dylib wasnt there. If you go to Build Phases, remove that from the list and add libz.1.2.5.dylib all mine worked first and I got the app working fully :)
I'm trying to run the example program for Drupal iOS SDK as downloaded here https://github.com/workhabitinc/drupal-ios-sdk-example
But, I can't build the project because of the ARC problems as in the screenshot below.
How can I change the settings or code to make it compile?
I had the same issue - I resolved it by disabling ARC partially. I used ARC for all my code and disabled it for all downloaded stuff.
See How can I disable ARC for a single file in a project?
This is only a temporary fix, but I guess you just want to run it to see it in action so it should be feasible.