【发布时间】:2017-04-25 03:46:41
【问题描述】:
这是我复制错误的方法。所以这是我用于登录的代码:
@IBAction func FBLoginAction(_ sender: AnyObject) {
fbLoginManager.loginBehavior = FBSDKLoginBehavior.browser
fbLoginManager.logIn(withReadPermissions: ["public_profile", "email", "user_friends"], from: self) { (result, error) -> Void in
if (error != nil) {
return
}
}
}
如果我登录两次,然后再次运行应用程序,此行会在 appdelegate 中崩溃。
FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
如果我只登录一次,然后再次运行应用程序,则不会发生崩溃。崩溃的完整堆栈如下:
2016-12-09 10:51:28.893 持久性[73125:897290] -[NSConcreteMutableData isEqualToString:]:无法识别的选择器发送到实例 0x60000004ec40 2016-12-09 10:51:28.903 持久性 [73125:897290] *** 由于未捕获而终止应用程序 异常“NSInvalidArgumentException”,原因: '-[NSConcreteMutableData isEqualToString:]: 发送了无法识别的选择器 到实例 0x60000004ec40'
*** 第一次抛出调用堆栈:( 0 CoreFoundation 0x00000001085e634b exceptionPreprocess + 171 1 libobjc.A.dylib
0x0000000107c2a21e objc_exception_throw + 48 2 核心基础
0x0000000108655f34 -[NSObject(NSObject) 不识别选择器:] + 132 3 核心基础 0x000000010856bc15 ___forwarding_ + 1013 4 CoreFoundation 0x000000010856b798 _CF_forwarding_prep_0 + 120 5 FBSDKCoreKit
0x000000010700aa5a -[FBSDKAccessTokenCacheV4 fetchAccessToken] + 202 6 FBSDKCoreKit 0x000000010700902c -[FBSDKAccessTokenCache fetchAccessToken] + 92 7 FBSDKCoreKit 0x0000000107017d2d -[FBSDKApplicationDelegate 应用程序:didFinishLaunchingWithOptions:] + 125 8 持久性
0x000000010572bcb7 _TFC11Persistence11AppDelegate11applicationfTCSo13UIApplication29didFinishLaunchingWithOptionsGSqGVs10DictionaryVSC29UIApplicationLaunchOptionsKeyP____Sb + 727 9 持久性 0x000000010572cfb4 _TToFC11Persistence11AppDelegate11applicationfTCSo13UIApplication29didFinishLaunchingWithOptionsGSqGVs10DictionaryVSC29UIApplicationLaunchOptionsKeyP____Sb + 180 10 UIKit 0x00000001091110be -[UIApplication_handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 290 11 UIKit 0x0000000109112a43 -[UIApplication _callInitializationDelegatesForMainScene:transitionContext:] + 4236 12 UIKit 0x0000000109118de9 -[UIApplication _runWithMainScene:transitionContext:completion:] + 1731 13 UIKit 0x0000000109115f69 -[UIApplication workspaceDidEndTransaction:] + 188 14 FrontBoardServices 0x000000010d698723 FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK + 24 15 FrontBoardServices 0x000000010d69859c -[FBSSerialQueue _performNext] + 189 16 FrontBoardServices 0x000000010d698925 -[FBSSerialQueue _performNextFromRunLoopSource] + 45 17 核心基础 0x000000010858b311 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17 18 核心基础 0x000000010857059c __CFRunLoopDoSources0 + 556 19 CoreFoundation 0x000000010856fa86 __CFRunLoopRun + 918 20 CoreFoundation
0x000000010856f494 CFRunLoopRunSpecific + 420 21 UIKit
0x00000001091147e6 -[UIApplication_run] + 434 22 UIKit
0x000000010911a964 UIApplicationMain + 159 23 持久性
0x000000010572d97f 主要 + 111 24 libdyld.dylib
0x000000010b3a368d 开始 + 1 ) libc++abi.dylib: 终止于 NSException 类型的未捕获异常
【问题讨论】: