[valueForUndefinedKey:]:此类与键约会日期的键值编码不兼容.

本文介绍了[valueForUndefinedKey:]:此类与键约会日期的键值编码不兼容. -迅速的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想对对象数组进行排序是我对对象数组进行排序的功能

i want to sort an array of object below is my function to sort the array of object

class func Fn_SortByParameter(arrayToSort:NSMutableArray,paramName:NSString!, isAscending:Bool!){ var sortDescriptor:NSSortDescriptor = NSSortDescriptor(key: paramName, ascending: isAscending, selector: Selector("localizedCompare:")) var sortDescriptors:NSArray = NSArray(object: sortDescriptor) var sortedArray:NSArray = arrayToSort.sortedArrayUsingDescriptors(sortDescriptors) arrayToSort.removeAllObjects() arrayToSort.addObjectsFromArray(sortedArray) }

AND

class func Fn_SortByParameter(arrayToSort:NSMutableArray,paramName:NSString!, isAscending:Bool!){ var sortDescriptor:NSSortDescriptor = NSSortDescriptor(key: paramName, ascending: isAscending) var sortDescriptors:NSArray = NSArray(object: sortDescriptor) var sortedArray:NSArray = arrayToSort.sortedArrayUsingDescriptors(sortDescriptors) arrayToSort.removeAllObjects() arrayToSort.addObjectsFromArray(sortedArray) }

数组包含以下类的对象

class Appointment: NSObject { var id:Double! var status:NSString! var clinic:Clinic! var medicalCase:MedicalCase! var patient:Patient! var appointmentDate:Double! // Unix timestamp var reasonForVisit:NSString! var cancellationReason:NSString! var visit:Visit! }

当我尝试排序时，它崩溃并显示以下错误

When i am trying to sort it is crashing with below error

[valueForUndefinedKey:]:此类与键约会日期的键值编码不兼容.'

[ valueForUndefinedKey:]: this class is not key value coding-compliant for the key appointmentDate.'

函数调用进行排序

Fn_SortByParameter(allAppointments.aaData, paramName: "appointmentDate", isAscending: true)

推荐答案

您遇到的问题是，像Double!这样的可选值类型没有暴露给Objective-C运行时，也不可用于键值编码

The problem you're running into is that optional value types like Double! are not exposed to the objective-c runtime and not available for key-value coding.

您可以将其设置为非可选:var appointmentDate:Double，使用NSNumber对象:var appointmentDate:NSNumber!，或使用Swift数组和内置的sorted函数.

You can make it non-optional: var appointmentDate:Double, use an NSNumber object: var appointmentDate:NSNumber!, or use a Swift array and the built-in sorted function.