包含方法无法正常工作，即使它与对象匹配，它也会给我错误的结果？
我的代码如下
class Generic: NSObject, NSCoding
{
var genericCode: String?
var genericName : String?
var genericType : String?
var genericImageUrl : String?
var genericPhone: String?
var orgName : String?
override init()
{
self.genericCode = String("")
self.genericName = String("")
self.genericType = String("")
self.genericImageUrl = String("")
self.genericPhone = String("")
self.orgName = String("")
}
//Parameterzed Constructor for the Generic
init(genericCode: String , genericName: String , genericPhone: String, genericType: String, genericImageUrl : String)
{
self.genericCode = genericCode
self.genericName = genericName
self.genericType = genericType
self.genericImageUrl = genericImageUrl
self.genericPhone = genericPhone
}
required init(coder aDecoder: NSCoder) {
genericCode = aDecoder.decodeObjectForKey("genericCode") as? String
genericName = aDecoder.decodeObjectForKey("genericName") as? String
genericType = aDecoder.decodeObjectForKey("genericType") as? String
genericPhone = aDecoder.decodeObjectForKey("genericPhone") as? String
}
func encodeWithCoder(aCoder: NSCoder) {
aCoder.encodeObject(genericCode, forKey: "genericCode")
aCoder.encodeObject(genericName, forKey: "genericName")
aCoder.encodeObject(genericType, forKey: "genericType")
aCoder.encodeObject(genericPhone, forKey: "genericPhone")
}
}
func ==(lhs: Generic, rhs: Generic) -> Bool
{
return lhs.genericCode == rhs.genericCode
}
检查 ViewController
print(readArray.contains(generic))
if !readArray.contains(generic)
{
readArray.append(generic)
}
OPTION 1
原因是你的类继承自NSObject，因此，您必须满足NSObjectProtocol代替Equatable:
override func isEqual(object: AnyObject?) -> Bool {
if let object = object as? Generic {
return self.genericCode == object.genericCode
}
return false
}
OPTION 2
继承自Equatable代替NSObject（您可能无法使用此选项，因为您似乎需要NSCoding)
请注意，对于较新版本的 Swift，您可能应该使用选项 3： Use Codable代替NSCodable
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