代码：
override init(){ id = "" md5 = "" type = FileType.Other name = "" suffix = "" senderName = "" sizeInBytes = 0 fromSource = "" updatedTime = NSDate() createdTime = NSDate() iconImage = UIImage(named: "file_icon_other")! iconImageLarge = UIImage(named: "file_icon_large_other")! } required init?(coder aDecoder: NSCoder){ self.iconImage = aDecoder.decodeObjectForKey(FileItem_iconImage) as! UIImage } |
搜：
swift UIImage decodeObjectForKey fail
ios – Shows an error Non – fail able initializer "init(coder:)" error – Stack Overflow
ios – Swift: decodeObjectForKey crashes if key doesn’t exist – Stack Overflow
Ray Wenderlich | Tutorials for Developers and Gamers
Using NSCoder with UIImage：swift
（已完结）马上着手开发 iOS 应用程序 (十一) – 持久化数据 – 简书
中也还是用的：
aCoder.encodeObject(photo, forKey: PropertyKey.photoKey) let photo = aDecoder.decodeObjectForKey(PropertyKey.photoKey) as? UIImage |
啊。。。
之前看了UIImage的定义：
@available(iOS 2.0, *) public class UIImage : NSObject, NSSecureCoding { } public protocol NSSecureCoding : NSCoding { // This method must be return YES on all classes that allow secure coding. Subclasses of classes that adopt NSSecureCoding and override initWithCoder: must also override this method and return YES. // The Secure Coding Guide should be consulted when writing methods that decode data. public static func supportsSecureCoding() -> Bool } |
swift UIImage decodeObjectForKey
iphone – NSCoding Persisting UIImage – Stack Overflow
ios – NSKeyedArchiver: key returning nil – Swift – Stack Overflow
然后改为：
required init?(coder aDecoder: NSCoder){ // self.iconImage = aDecoder.decodeObjectForKey(FileItem_iconImage) as! UIImage // self.iconImageLarge = aDecoder.decodeObjectForKey(FileItem_iconImageLarge) as! UIImage let iconImageData = aDecoder.decodeObjectForKey(FileItem_iconImage) self.iconImage = UIImage(data: iconImageData as! NSData)! let iconImageLargeData = aDecoder.decodeObjectForKey(FileItem_iconImageLarge) self.iconImageLarge = UIImage(data: iconImageLargeData as! NSData)! super.init() } func encodeWithCoder(aCoder: NSCoder){ // aCoder.encodeObject(self.iconImage, forKey: FileItem_iconImage) // aCoder.encodeObject(self.iconImageLarge, forKey: FileItem_iconImageLarge) let iconImageData = UIImagePNGRepresentation(self.iconImage) aCoder.encodeObject(iconImageData, forKey: FileItem_iconImage) let iconImageLargeData = UIImagePNGRepresentation(self.iconImageLarge) aCoder.encodeObject(iconImageLargeData, forKey: FileItem_iconImageLarge) } |
就又可以了。
［总结］
之前很多的UIImage图片，都是直接用encodeObject和decodeObjectForKey：
比如：
self.senderAvatar = aDecoder.decodeObjectForKey(Message_senderAvatar) as! UIImage self.senderAvatarLarge = aDecoder.decodeObjectForKey(Message_senderAvatarLarge) as! UIImage aCoder.encodeObject(self.senderAvatar, forKey: Message_senderAvatar) aCoder.encodeObject(self.senderAvatarLarge, forKey: Message_senderAvatarLarge) |
也没有问题。
不知道为何此处有问题。。。
然后改为：
required init?(coder aDecoder: NSCoder){ // self.iconImage = aDecoder.decodeObjectForKey(FileItem_iconImage) as! UIImage // self.iconImageLarge = aDecoder.decodeObjectForKey(FileItem_iconImageLarge) as! UIImage let iconImageData = aDecoder.decodeObjectForKey(FileItem_iconImage) self.iconImage = UIImage(data: iconImageData as! NSData)! let iconImageLargeData = aDecoder.decodeObjectForKey(FileItem_iconImageLarge) self.iconImageLarge = UIImage(data: iconImageLargeData as! NSData)! super.init() } func encodeWithCoder(aCoder: NSCoder){ // aCoder.encodeObject(self.iconImage, forKey: FileItem_iconImage) // aCoder.encodeObject(self.iconImageLarge, forKey: FileItem_iconImageLarge) let iconImageData = UIImagePNGRepresentation(self.iconImage) aCoder.encodeObject(iconImageData, forKey: FileItem_iconImage) let iconImageLargeData = UIImagePNGRepresentation(self.iconImageLarge) aCoder.encodeObject(iconImageLargeData, forKey: FileItem_iconImageLarge) } |
即可。
根本原因，抽空再深究。
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