当应用在后台时,我想在用户点按收到的通知时打开特定视图。我正在发布appDelegate的通知,如下所示:
func application(application: UIApplication, didReceiveLocalNotification notification: UILocalNotification) {
if let info = notification.userInfo {
// Check if value present before using it
if let s = info["CallIn"] {
if(s as! String == "10minBeforeMeeting"){
NSNotificationCenter.defaultCenter().postNotificationName("EventListShouldRefresh", object: self)
}
if(s as! String == "CallInNotification"){
if let UUID = info["UUID"]{
print("ha: \(UUID)")
NSNotificationCenter.defaultCenter().postNotificationName("OpenDetailViewOfMeeting", object: self, userInfo: ["UUID":UUID])
}
}
}
else {
print("no value for key\n")
}
}
else {
print("wrong userInfo type")
}
}
在课堂上,我是这个通知的观察者:
//in viewDidLoad:
NSNotificationCenter.defaultCenter().addObserver(self, selector: "openDetailView", name: "OpenDetailViewOfMeeting", object: nil)
func openDetailView(notification: NSNotification) {
let userInfo = notification.userInfo as! [String: AnyObject]
let UUIDunbind = userInfo["UUID"] as! String
let events = CalendarController.sharedInstance.todaysMeetings()
for event in events {
if(event.UUID == UUIDunbind){
let detailViewController = DetailViewController()
detailViewController.meeting = event
self.mainViewController.showDetailViewController(detailViewController, sender: self)
}
}
}
当我收到通知时,我收到NSInvalidArgumentException: 好像它甚至没有进入openDetailView方法。在其他地方,我使用完全相同的结构,它的工作原理(虽然通知不是从appDelegate发布,而是直接从某个类发布)。 错误日志:
** *由于未捕获的异常终止应用' NSInvalidArgumentException',原因:' - [CallIn.ViewController openDetailView]:无法识别的选择器发送到实例0x7f9623c4d330'
我做错了什么?
答案 0 :(得分:0)