我做错了什么会导致“从不正确的线程访问 Realm ”错误？
2015-03-14 06:59:54.962 MyApp[25646:1218284] *** Terminating app due to uncaught exception 'RLMException', reason: 'Realm accessed from incorrect thread'
*** First throw call stack:
(
0 CoreFoundation 0x01961466 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x01212a97 objc_exception_throw + 44
2 MyApp 0x00120329 _ZL11RLMGetArrayP13RLMObjectBasejP8NSString + 382
3 MyApp 0x00122952 ___ZL17RLMAccessorGetterP11RLMPropertycP8NSString_block_invoke291 + 25
4 MyApp 0x00047f87 _TFFC11 MyApp 25ReadArticleViewController11viewDidLoadFS0_FT_T_U_FT_T_ + 823
5 MyApp 0x0003da44 _TPA__TFFC11 MyApp 25ReadArticleViewController11viewDidLoadFS0_FT_T_U_FT_T_ + 52
6 MyApp 0x0004bce8 _TTRXFo__dT__XFdCb__dT__ + 40
7 libdispatch.dylib 0x0384eaf8 _dispatch_block_async_invoke_and_release + 347
8 libdispatch.dylib 0x0386dbef _dispatch_client_callout + 14
9 libdispatch.dylib 0x038551ef _dispatch_root_queue_drain + 1092
10 libdispatch.dylib 0x03856b70 _dispatch_worker_thread3 + 115
11 libsystem_pthread.dylib 0x03bc91da _pthread_wqthread + 724
12 libsystem_pthread.dylib 0x03bc6e2e start_wqthread + 30
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
这是我的 prepareForSegue？
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "readArticle" {
let indexPathRow = tableView.indexPathForSelectedRow()!.row// because I need to show a progress view whie the next view loads // sometimes it works.
Async.background {
println("BEFORE")
var Realm = RLMRealm.defaultRealm()
if let article = Article.allObjects()[UInt(indexPathRow)] as? Article
{
var destination = segue.destinationViewController as ReadArticleViewController
destination.article = article as Article
// destination.realmQueue = self.realmQueue as dispatch_queue_attr_t
}
println("AFTER")
}.main {
println("finished segue")
}
}
else if segue.identifier == "newArticle" {
// let newArticleViewController = segue.destinationViewController as NewArticleViewController
}
}
有时我会进入下一个 View ，有时则不会。
有没有办法保证将使用哪个线程，以便我可以确保每次访问该 Realm 时都使用相同的线程？
我还做错了什么导致了这个错误？
请您参考如下方法:
我很确定崩溃的发生是因为您试图在主线程中调用的 ReadArticleViewController 的 viewDidLoad 方法中使用来自“后台访问 Realm ”的文章。您不能从后台访问 Realm 以在 prepareForSegue: 方法中选择一篇文章，然后在 ReadArticleViewController 的主线程中使用该文章。 你为什么要在后台传递这篇文章？
