I am getting this error while running the application.Kindly provide some information on this error
dyld: Symbol not found: _OBJC_CLASS_$_UICollectionViewCell
The problem may be with the IPHONEOS_DEPLOYMENT_TARGET
make it proper in
Target->BuildSettings->IPHONEOS_DEPLOYMENT_TARGET
Target->Summary->iOS Application Target.
UICollectionView & UICollectionViewCell is for iOS 6 and later and hence it may be set to lower version the error pops up
Related
When I tried to run my app with Xcode 9 on iPhone 5s which is updated with iOS 11, App gets crashed on the launch screen. The log printed is:
dyld: Symbol not found: _SCNSceneExportPresentationTree
Referenced from: /Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib
Expected in: /System/Library/Frameworks/SceneKit.framework/SceneKit
in /Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib
From the log, it seems that it is because of some new ARKit changes with Xcode, but my app does not use any of the ARKit related frameworks.
Can anyone help here?
I've just recently started working with Xcode, trying to build iOS version of our Unity3D game that is already made for Android. The problem I'm having occurs when trying to start my app in Xcode simulator, tried to find my exact problem in here but nobody is mentioning "__vtcOnSessionStart". Full error message:
dydl: Symbol not found: __vtcOnSessionStart
Referenced
from:/Users/kostitch/Library/Developer/CoreSimulator/Devices/ED13FE1B-5F33-4E82-8A68-66C59F043E0F/data/Containers/Bundle/Application/BC7ED012-F851-4BF2-89DD-964C198C9300/basicbingotwo.app/basicbingotwo
Expected in: flat namespace
For some reason I'm getting this in the iPhone Simulator when I try to call AddComponent on a script-created GameObject during another object's Awake() method. Removing this fixed the error.
I've been getting reports of my app crashing on load in iOS 6. It's built with the iOS 8 SDK and works fine on 7 & 8.
I've just managed to get hold of an iOS 6 device to test and it does in fact crash on launch with the error:
dyld: Symbol not found: _UITransitionContextFromViewControllerKey
Referenced from:
/var/mobile/Applications/895BC1B3-A362-42C9-8560-5CF40A682A10/myapp.app/MyApp
Expected in: /System/Library/Frameworks/UIKit.framework/UIKit in
/var/mobile/Applications/895BC1B3-A362-42C9-8560-5CF40A682A10/myapp.app/MyApp
I understand that dyld is a linker problem, but have no idea where to start with this.
I've unlinked and re-added UIKit, but still doesn't work.
Thanks
This is because UITransitionContextFromViewControllerKey doesn't exist until iOS 7. Working around this probably isn't worth the effort--it means dropping all usage of UIViewControllerContextTransitioning, as the protocol is new in iOS 7, or creating a separate code path for iOS 6. If that's what you want, look into weak-linking UIKit, although this may result in slow startup.
Look like your using UIViewControllerContextTransitioning. It's available only on iOS 7+.
See this question for more details Restore pre-iOS7 UINavigationController pushViewController animation
I debug a simple swift app , it can normally running in the simulator, but on a real machine running on the crash immediately .
system version , ios 8
xcode version , 6.0.1
crash log
dyld: Library not loaded: #rpath/libswiftCore.dylib Referenced from:
/private/var/mobile/Containers/Bundle/Application/002E2F03-EE10-433B-B95F-AE3760E777DA/sMdp.app/sMdp
Reason: no suitable image found. Did find:
/private/var/mobile/Containers/Bundle/Application/002E2F03-EE10-433B-B95F-AE3760E777DA/sMdp.app/Frameworks/libswiftCore.dylib:
mmap() error 1 at address=0x100104000, size=0x00194000 segment=__TEXT
in Segment::map() mapping
/private/var/mobile/Containers/Bundle/Application/002E2F03-EE10-433B-B95F-AE3760E777DA/sMdp.app/Frameworks/libswiftCore.dylib
This issues seems to be caused by the certificate. Apple filled the Organization Unit in the certificate. So you need to request a new certificate en install that one. The field will be filled and your app will work properly.
Source (and credits to those guys):
https://www.airsignapp.com/ios-apps-using-swift-crash-when-signed-with-inhouse-certificate/
Just go to your certificates in Keychain , Right Click -> Get Info -> Trust - > find a field with name "When using this certificate"-> Select "use system default" option.
So I have the following problem:
launching my application on iOS 8 on my iPhone 5s, I get no error, but launching my app on iOS 6.1.3 on my iPhone 3GS, I get this error:
dyld: Symbol not found: _OBJC_CLASS_$_NSNetService
Referenced from: /var/mobile/Applications/567E221A-FC5C-4011-90AD-E47E5FF033B1/BellyClient.app/BellyClient
Expected in: /System/Library/Frameworks/CFNetwork.framework/CFNetwork
in /var/mobile/Applications/567E221A-FC5C-4011-90AD-E47E5FF033B1/BellyClient.app/BellyClient
I imported a class named Server. The class uses the CFNetwork.framework, which contains the class NSNetService, which is avaiable since iOS 2.0.
Using NSClassFromString(#"NSNetService") is not really a solution I like.
I also don't know, why this error occurs, because the class NSNetService should be avaiable in iOS 6. Could it be the device?
I searched and found, that setting the framework to Optional, will solve this issue. But the problem is, that I cannot use the framework, when I run the application on iOS 6. When I do
if ([NSNetService class] == nil) {
NSLog(#"NSNetService is nil");
}
I get printed NSNetService is nil.
Is it possible to launch the app without crashing and without setting the framework as Optional
Thanks iComputerfreak
Try re-adding Foundation.framework:
Go to your project's target
Choose "General" tab
Under "Linked Frameworks an Libraries" look for Foundation.framework, select it and press the minus ('-') sign at the buttom to remove this framework.
Now press the plus sign ('+') and search for Foundation.framework - re-add it, and it's supposed to fix your crash.
Hope it works - it did for me.