App crashed on IOS 7.0 works fine on 7.1 - ios7

I have built an app that works well on IOS 7.1 but when installed on IOS 7.0 it crashes with the following logs:
dyld: lazy symbol binding failed: Symbol not found: _OSAtomicDecrement32
Referenced from: /var/mobile/Applications/80FCE91D-EAB5-4321-A157-4A05EA40C07C/MyAPP.app/MyAPP
Expected in: /usr/lib/libSystem.B.dylib
Aug 16 14:42:00 LAWR3NCEde-iPhone MyAPP[14925] <Notice>: dyld: Symbol not found: _OSAtomicDecrement32
Referenced from: /var/mobile/Applications/80FCE91D-EAB5-4321-A157-4A05EA40C07C/MyAPP.app/MyAPP
Expected in: /usr/lib/libSystem.B.dylib
The app uses Facebook SDK and MSDynamicsViewController (Which uses UIKit). Any idea what this message mean ? And what is this OSAtomicDecrement32 ?

OSAtomicDecrement32 is in OSAtomic.h. It is useful when implementing locks or retain counts in a multi-threaded program.
It's marked as being available on 7.1 and up only (on iPhone) which is why you are crashing.
__OSX_AVAILABLE_STARTING(__MAC_NA, __IPHONE_7_1)
int32_t OSAtomicDecrement32( volatile int32_t *__theValue );

Related

dyld: Library not loaded: #rpath/Realm.framework/Realm error with Realm Objective C framework

I have installed the Realm Objective C Framework (2.0.3) by simply dragging it into my project created in Xcode 8. When I first tried it on simulator I got the typical dyld error.
dyld: Library not loaded: #rpath/Realm.framework/Realm
Referenced from: /var/containers/Bundle/Application/89F5987A-F3F0-45F2-9014-6BA662135E00/RelamDemo.app/RelamDemo
Reason: image not found
So I tried to fix it using the following suggestion:
https://github.com/realm/realm-cocoa/issues/1681#issuecomment-120749962
And it worked on iOS 10 Simulators.
But when I tried to run the same project on a device (iOS 10/9.3.2) I got the same dyld error again.
I have checked that I have copied the Realm.framework in my project. Now how can I solve the problem?
You need to ensure that Realm.framework is also copied to the 'Embedded Binaries' section of your app as well.
You can find that section in the 'General' tab of your project's settings.
(Screenshot courtesy of this iOSDevCenter post)

Ios :: dyld: Symbol not found: _OBJC_CLASS_$_UIAlertAction

I have an app which works fine with iOS sdk 8.3 and Xcode 6. but when i check backward compatibility with iOS sdks 7.1 and 7.1 simulator it fails.
App crashes with following error
dyld: Symbol not found: _OBJC_CLASS_$_UIAlertAction
Referenced from: /Users/apogaeis/Library/Developer/CoreSimulator/Devices/F48B2D65-9EE8-4737-A0CE-2882D105C6C9/data/Applications/25B9DCDE-4BC6-4568-8EBE-3474FE559CBC/AppName.app/AppName
Expected in: /Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 7.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/UIKit.framework/UIKit
in /Users/apogaeis/Library/Developer/CoreSimulator/Devices/F48B2D65-9EE8-4737-A0CE-2882D105C6C9/data/Applications/25B9DCDE-4BC6-4568-8EBE-3474FE559CBC/AppName.app/AppName
Please suggest to resolve the issue.
How can i make it work for all the iOS versions?
Thanks
In my case, UIKit.Framework had to be marked Optional rather than Required now my app works fine....

App crashes on some devices after update

Im experiencing something strange while updating my app in the Appstore. Version 1.4 worked fine for every device. However Version 2.0 crashes on some devices when updated. The loading screen wouldnt even show when starting up and the app would crash within a second. Removing and reinstalling the application from the app store solves this problem. Again this only happens on some devices (iPod, iPhone 4, iPhone 4s, iPad so far).
I manages to get my hands on a crashing device and check the Device logs. Also I think I found something but I cant really understand the error. It says:
Dyld Error Message:
Library not loaded: /System/Library/Frameworks/AdSupport.framework/AdSupport
Referenced from: /var/mobile/Applications/(ID)/AppName.app/AppName
Reason: image not found
Dyld Version: 199.6
I added AdSupport.framework because I implemented Facebook in my App in version 2.0 and the file is in my project in the folder 'Frameworks'.
Does somebody know how to fix this?
Here is the full crash Report if useful.
Incident Identifier: ID
CrashReporter Key: crash key
Hardware Model: iPod4,1
Process: AppName [35491]
Path: /var/mobile/Applications/id/AppName.app/AppName
Identifier: AppName
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-03-05 23:23:35.041 +0100
OS Version: iPhone OS 5.1.1 (9B206)
Report Version: 104
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x00000001, 0xe7ffdefe
Crashed Thread: 0
Dyld Error Message:
Library not loaded: /System/Library/Frameworks/AdSupport.framework/AdSupport
Referenced from: /var/mobile/Applications/(id)/AppName.app/AppName
Reason: image not found
Dyld Version: 199.6
Binary Images:
0x7a000 - 0x106fff +AppName armv7 <0c108dce50ee3e65970e2538a3e319f8> /var/mobile/Applications/(id)/AppName.app/AppName
0x2fe79000 - 0x2fe9afff dyld armv7 <77eddfd654df393ba9c95ff01715fd08> /usr/lib/dyld
0x3075a000 - 0x307d9fff libsqlite3.dylib armv7 <bf01f5ed47b033d8bde30d735ff44416> /usr/lib/libsqlite3.dylib
0x3113c000 - 0x311a0fff MessageUI armv7 <da7af4f9494b35558bf7892dfdb36ee3> /System/Library/Frameworks/MessageUI.framework/MessageUI
This iPod has iOS 5.1 but I also received report on iOS 6.1
Because AdSupport.framework, is ONLY available on iOS 6. So Dyld cannot find something who doesn't exist on past IOS. Even if you are adding framework into your project, you don't actually include the binary, only the reference.
If it's not crashing when you are reinstalling your app, it's because maybe it doesn't use the adSupport functionality at that time. But i'm not sure of this theory because i haven't made your code ;)
Here the apple available framework link, hope it will help you
http://developer.apple.com/library/ios/#documentation/miscellaneous/conceptual/iphoneostechoverview/iPhoneOSFrameworks/iPhoneOSFrameworks.html

Static library(ARC) work on non ARC app, met error: dyld: lazy symbol binding failed: Symbol not found: _objc_retainAutoreleasedReturnValue

Xcode 4.3.2
I wrote a static library, using ARC.
When I put it into a project, and test on iOS 4.3 simulator. (base on iOS 5.1, deploy target 4.3)
If the project using ARC, it works fine.
If the project not using ARC, met errors, such as:
dyld: lazy symbol binding failed: Symbol not found: _objc_retainAutoreleasedReturnValue
Referenced from: /Users/cnzzmobile/Library/Application Support/iPhone Simulator/4.3.2/Applications/A4EEB0A0-AC16-402C-B426-46667225F66D/test.app/test
Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk/System/Library/Frameworks/Foundation.framework/Foundation
dyld: Symbol not found: _objc_retainAutoreleasedReturnValue
Referenced from: /Users/cnzzmobile/Library/Application Support/iPhone Simulator/4.3.2/Applications/A4EEB0A0-AC16-402C-B426-46667225F66D/test.app/test
Expected in: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk/System/Library/Frameworks/Foundation.framework/Foundation
I searched a lot, but can't find an answer can solve this problem.
I remove jsonobjcet which only supported by iOS5, and -fobjc-arc also doesn't work.
Thanks
I found add "-fobjc-arc" at "other linker flag" can solve this problem on Xcode 4.3.2 based on iOS 5.1. Because the xcode can't find the lib which support ARC to link.
Notice that: add "-fobjc-arc" at "other linker flag" not at "Compile sources".
But this still doesn't work on old version Xcode 4(snow leopard) based on iOS 4.3.
I found some lib can work on both ARC and non ARC project without adding any special setting. I'm still waiting for the answer how to do this. Write code using pure C?
_objc_retainAutoreleasedReturnValue is a function of iOS 5.x's version of arc. You are attempting to build this framework and run it on iOS 4.3, which requires you to specify and deploy it for iOS 4.x, which runs the "ArcLite" framework.

Compiling reverse geocoding in iOS 5

I'm writing a program for iOS 5. The program should perform reverse geocoding.
When trying to compile I get the warning
MKReverseGeocoder is deprecated
and an error
Undefined symbols for architecture i386:
"_OBJC_CLASS_$_CLLocationManager", referenced from:
objc-class-ref in UserLocationAddressViewController.o"
I have 2 questions:
How can I compile without the warning and the error?
I want the application to run on iOS 3, iOS 4, and on iOS 5. How can I do it?
You need to make sure your deployment target is set to the lowest iOS version you want to support. In the example below, the app is built for 5.0 (base SDK), but will run on iOS 4.0 (deployment target):
Setting this to any value below 5.0 will remove the deprecation warning.