我想对一个对象数组进行排序,以下是我用于对对象数组进行排序的函数。
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)
}
数组包含下面这个类的对象
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,它会崩溃并显示以下错误:
[valueForUndefinedKey:]:该类不符合键值编码要求,无法使用appointmentDate关键字。
调用排序函数
Fn_SortByParameter(allAppointments.aaData, paramName: "appointmentDate", isAscending: true)