重现错误的步骤:
您的实现中的相关代码片段: ~~~
NSLog(@"Your code goes here");
var manager = FBSDKLoginManager();
manager.loginBehavior = FBSDKLoginBehavior.Web
manager.logInWithReadPermissions(
["public_profile","email" ],
handler: {
(result: FBSDKLoginManagerLoginResult!, error: NSError!) -> Void in
if ((error) != nil)
{
// Process error
println("error\(error)")
}
else if result.isCancelled {
// Handle cancellations
println("isCancelled\(result.isCancelled)")
}
else {
// If you ask for multiple permissions at once, you
// should check if specific permissions missing
if result.grantedPermissions.contains("email")
{
self.returnUserData()
}
}
})
~~~
SDK 版本:v4.5.1
当我调试时，我遇到了错误
+[FBSDKInternalUtility unregisterTransientObject:]:
0x103ad7cb2 <+0>: pushq %rbp
0x103ad7cb3 <+1>: movq %rsp, %rbp
0x103ad7cb6 <+4>: pushq %r15
0x103ad7cb8 <+6>: pushq %r14
0x103ad7cba <+8>: pushq %r13
0x103ad7cbc <+10>: pushq %r12
0x103ad7cbe <+12>: pushq %rbx
0x103ad7cbf <+13>: pushq %rax
0x103ad7cc0 <+14>: movq %rdx, %rdi
0x103ad7cc3 <+17>: callq *0x207d57(%rip) ; (void *)0x0000000105e6e930: objc_retain
0x103ad7cc9 <+23>: movq %rax, %r14
0x103ad7ccc <+26>: movq 0x5375cd(%rip), %rdi ; _transientObjects
0x103ad7cd3 <+33>: movq 0x2f99ae(%rip), %rsi ; "objectForKey:"
0x103ad7cda <+40>: movq 0x207d2f(%rip), %r13 ; (void *)0x0000000105e71000: objc_msgSend
0x103ad7ce1 <+47>: movq %r14, %rdx
0x103ad7ce4 <+50>: callq *%r13
0x103ad7ce7 <+53>: movq %rax, %rdi
0x103ad7cea <+56>: callq 0x103c2e7e0 ; symbol stub for: objc_retainAutoreleasedReturnValue
0x103ad7cef <+61>: movq %rax, %rbx
0x103ad7cf2 <+64>: movq 0x2f9a3f(%rip), %rsi ; "unsignedIntegerValue"
0x103ad7cf9 <+71>: movq %rbx, %rdi
0x103ad7cfc <+74>: callq *%r13
0x103ad7cff <+77>: movq %rax, %r15
0x103ad7d02 <+80>: movq %rbx, %rdi
0x103ad7d05 <+83>: callq *0x207d0d(%rip) ; (void *)0x0000000105e6e9b0: objc_release
0x103ad7d0b <+89>: testq %r15, %r15
0x103ad7d0e <+92>: je 0x103ad7d74 ; <+194> at FBSDKInternalUtility.m:456
0x103ad7d10 <+94>: cmpq $0x1, %r15
0x103ad7d14 <+98>: jne 0x103ad7d2f ; <+125> at FBSDKInternalUtility.m:454
0x103ad7d16 <+100>: movq 0x537583(%rip), %rdi ; _transientObjects
0x103ad7d1d <+107>: movq 0x2f9184(%rip), %rsi ; "removeObjectForKey:"
0x103ad7d24 <+114>: movq %r14, %rdx
0x103ad7d27 <+117>: callq *0x207ce3(%rip) ; (void *)0x0000000105e71000: objc_msgSend
0x103ad7d2d <+123>: jmp 0x103ad7d74 ; <+194> at FBSDKInternalUtility.m:456
0x103ad7d2f <+125>: movq 0x53756a(%rip), %r12 ; _transientObjects
0x103ad7d36 <+132>: movq 0x302fa3(%rip), %rdi ; (void *)0x0000000105d0cb88: NSNumber
0x103ad7d3d <+139>: decq %r15
0x103ad7d40 <+142>: movq 0x2f92d9(%rip), %rsi ; "numberWithUnsignedLong:"
0x103ad7d47 <+149>: movq %r15, %rdx
0x103ad7d4a <+152>: callq *%r13
0x103ad7d4d <+155>: movq %rax, %rdi
0x103ad7d50 <+158>: callq 0x103c2e7e0 ; symbol stub for: objc_retainAutoreleasedReturnValue
0x103ad7d55 <+163>: movq %rax, %rbx
0x103ad7d58 <+166>: movq 0x2f99e1(%rip), %rsi ; "setObject:forKey:"
0x103ad7d5f <+173>: movq %r12, %rdi
0x103ad7d62 <+176>: movq %rbx, %rdx
0x103ad7d65 <+179>: movq %r14, %rcx
0x103ad7d68 <+182>: callq *%r13
0x103ad7d6b <+185>: movq %rbx, %rdi
0x103ad7d6e <+188>: callq *0x207ca4(%rip) ; (void *)0x0000000105e6e9b0: objc_release
0x103ad7d74 <+194>: movq %r14, %rdi
0x103ad7d77 <+197>: addq $0x8, %rsp
0x103ad7d7b <+201>: popq %rbx
0x103ad7d7c <+202>: popq %r12
0x103ad7d7e <+204>: popq %r13
0x103ad7d80 <+206>: popq %r14
0x103ad7d82 <+208>: popq %r15
0x103ad7d84 <+210>: popq %rbp
0x103ad7d85 <+211>: jmpq *0x207c8d(%rip) ; (void *)0x0000000105e6e9b0: objc_release
我今天也目睹了这次崩溃。在完全相同的位置，即 [FBSDKInternalUtility unregisterTransientObject:] 并在执行完全相同的步骤后(FB 登录 -> 输入凭据 -> 取消按钮 -> 崩溃)。
似乎不仅影响 iOS Facebook SDK v4.5.1，还影响 v4.6 和 v4.1.0。
关于ios facebook登录在取消按钮上崩溃，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32565568/
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