我正在用Realm製作一個簡單的列表應用程序,並且我無法更新方法。這是我的代碼。領域更新發送到實例的Swift無法識別的選擇器
Task.swift
class Task: Object {
dynamic var id = 0
dynamic var name = ""
dynamic var content = ""
dynamic var createdDate = NSDate()
override class func primaryKey() -> String? {
return "id"
}
class func autoIncrement() -> Int{
let realm = try! Realm()
let TaskList = realm.objects(Task.self).sorted(byKeyPath: "id", ascending: true)
let Last = TaskList.last
if TaskList.count == 0{
return 0
} else{
return Last!.id + 1
}
}
}
TaskController.swift
static func updateTask(name:String, content:String, oldTask:Task){
RealmController.updateTask(name:name, content:content, task: oldTask)
//RealmController.getData(taskList: &appDelegate.task)
}
RealmController.swift
static func updateTask(name:String, content:String, task: Task){
let taskId = task.id
let RealTask = realm.objects(Task.self).filter("id == %@", taskId).first
try! realm.write {
RealTask?.name = name
RealTask?.content = content
}
}
錯誤消息。
2017年2月10日17:13:57.179 RealmTest1 [7156:9710210] - [RealmTest1.EditViewController saveTask:]:無法識別的選擇發送到實例0x7fd06351eaa0 2017年2月10日17:13:57.183 RealmTest1 [7156:9710210] ***終止應用程序由於未捕獲的異常 'NSInvalidArgumentException' 的,原因是: ' - [RealmTest1.EditViewController saveTask:]:無法識別的選擇發送到實例0x7fd06351eaa0'
堆棧跟蹤
0 CoreFoundation 0x0000000107c00d4b __exceptionPreprocess + 171<br/>
1 libobjc.A.dylib 0x000000010766221e objc_exception_throw + 48<br/>
2 CoreFoundation 0x0000000107c70f04 -[NSObject(NSObject) doesNotRecognizeSelector:] + 132
3 CoreFoundation 0x0000000107b86005 ___forwarding___ + 1013<br/>
4 CoreFoundation 0x0000000107b85b88 _CF_forwarding_prep_0 + 120<br/>
5 UIKit 0x00000001080268bc -[UIApplication sendAction:to:from:forEvent:] + 83<br/>
6 UIKit 0x00000001081acc38 -[UIControl sendAction:to:forEvent:] + 67<br/>
7 UIKit 0x00000001081acf51 -[UIControl _sendActionsForEvents:withEvent:] + 444<br/>
8 UIKit 0x00000001081abe4d -[UIControl touchesEnded:withEvent:] + 668<br/>
9 UIKit 0x0000000108094545 -[UIWindow _sendTouchesForEvent:] + 2747<br/>
10 UIKit 0x0000000108095c33 -[UIWindow sendEvent:] + 4011<br/>
11 UIKit 0x00000001080429ab -[UIApplication sendEvent:] + 371<br/>
12 UIKit 0x000000010882f72d __dispatchPreprocessedEventFromEventQueue + 3248<br/>
13 UIKit 0x0000000108828463 __handleEventQueue + 4879<br/>
14 CoreFoundation 0x0000000107ba5761 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17<br/>
15 CoreFoundation 0x0000000107b8a98c __CFRunLoopDoSources0 + 556<br/>
16 CoreFoundation 0x0000000107b89e76 __CFRunLoopRun + 918<br/>
17 CoreFoundation 0x0000000107b89884 CFRunLoopRunSpecific + 420<br/>
18 GraphicsServices 0x000000010d8caa6f GSEventRunModal + 161<br/>
19 UIKit 0x0000000108024c68 UIApplicationMain + 159<br/>
20 RealmTest1 0x000000010691518f main + 111<br/>
21 libdyld.dylib 0x000000010a44d68d start + 1<br/>
重新啓動應用程序後,內容已被更改。 我該如何解決它?
static func updateTask(name:String, content:String, task: Task){
let taskId = task.id
let RealTask = realm.objects(Task.self).filter("id == %@", taskId).first
try! realm.write {
RealTask?.name = name
RealTask?.content = content
}
}
到
static func updateTask(name:String, content:String, task: Task){
let taskId = task.id
if let RealTask = realm.objects(Task.self).filter("id == %@", taskId).first {
try! realm.write {
RealTask.name = name
RealTask.content = content
}}
}
錯誤消息說'-saveTask:'消息正在發送到'EditViewController'。那個班是否實施該方法?你只顯示了一個'updateTask'方法的代碼。 – bdash