代码：
let key_conversationItemList = gCurUserItem.id + "/conversationItemList" var conversationItemList:[ConversationItem] let saveOk = NSKeyedArchiver.archiveRootObject(conversationItemList, toFile: key_conversationItemList) print("saveOk=\(saveOk)") |
返回为false
swift NSKeyedArchiver archiveRootObject false
ios – NSKeyedArchiver archiveRootObject keeps returning NO – Stack Overflow
好像是要创建对应文件夹才可以。。。
Data persistence with NSCoding in swift for more information visit
https://gist.github.com/tomdiggle/75906f60a485affaabd2
算了，还是去用：
但是发现很难使用：
需要实现一堆的Storable
并且：
如果要实现的类中init包含自定义参数的话，还很难搞定。。
算了，还是使用NSKeyedUnarchiver吧。
How to save and load objects with NSKeyedArchiver and NSKeyedUnarchiver – Swift 2 example code
swift实现iOS数据持久化之归档NSKeyedArchiver – swift迷
Swift and NSCoding: Keeping it Simple
swift NSKeyedArchiver 示例
结果创建了文件夹后，调用
NSKeyedArchiver.archiveRootObject
还是false：
let saveFileUrl = saveDirUrl.URLByAppendingPathComponent("conversationItemList") print("saveFileUrl=\(saveFileUrl)") //saveFileUrl=file:///Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/C96626A4-93C7-4354-85D4-66272E1E4800/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList/ let saveFilePath = saveFileUrl.path! print("saveFilePath=\(saveFilePath)") //saveFilePath=/Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/C96626A4-93C7-4354-85D4-66272E1E4800/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList let saveOk = NSKeyedArchiver.archiveRootObject(conversationItemList, toFile: saveFilePath) // let saveOk = Pantry.pack(conversationItemList, key: key_conversationItemList) print("saveOk=\(saveOk)") //saveOk=false |
swift NSKeyedArchiver false
Writing swift dictionary to file – Stack Overflow
Swift NSCoding Not working – Stack Overflow
此处，解决了一个小问题：
保存的文件
从：
saveFilePath=/Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/2A46A702-E252-46A8-9D73-0E49994AD9EF/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList/ |
改为：
saveFilePath=/Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/2A46A702-E252-46A8-9D73-0E49994AD9EF/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList |
后，是可以调用到对应的要保存的数组：
var conversationItemList:[ConversationItem] |
中内部的：
class ConversationItem:NSObject, NSCoding { func encodeWithCoder(aCoder: NSCoder){ |
了。
但是最终结果还是出错了。。。
而去调试期间，也找不到：
内部到底是什么原因导致encode出错的。。。
【总结】
结果此处故意设置为，上一级目录中去保存数据，结果竟然可以成功保存：
// let saveFileUrl = saveDirUrl.URLByAppendingPathComponent("conversationItemList", isDirectory: false) let saveFileUrl = gCurUserItem.archiveRootDir.URLByAppendingPathComponent("conversationItemList", isDirectory: false) print("saveFileUrl=\(saveFileUrl)") //saveFileUrl=file:///Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/2A46A702-E252-46A8-9D73-0E49994AD9EF/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList //file:///Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/10710286-12D6-4963-9B56-7D7E3730BA29/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/conversationItemList let saveFilePath = saveFileUrl.path! print("saveFilePath=\(saveFilePath)") //saveFilePath=/Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/2A46A702-E252-46A8-9D73-0E49994AD9EF/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/Conversation/conversationItemList ///Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/10710286-12D6-4963-9B56-7D7E3730BA29/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/conversationItemList //let saveOk = NSKeyedArchiver.archiveRootObject(conversationItemList, toFile: saveFilePath) let saveOk = NSKeyedArchiver.archiveRootObject(conversationItemList[0], toFile: saveFilePath) // let saveOk = Pantry.pack(conversationItemList, key: key_conversationItemList) print("saveOk=\(saveOk)") //saveOk=false //saveOk=true |
最后的最后，终于正常了：
可以正常保存数据了。。。
而之前出错的原因是：
1.第一次是由于，不小心把file文件的路径最后加上了/，变成了路径了。。所以保存就会出错
2.第二次是：由于之前的（调试的代码而导致的）误操作，创建了对应的同名的一个文件夹：
/Users/crifan/Library/Developer/CoreSimulator/Devices/84FE8057-ED19-4703-BAE0-7C5156289534/data/Containers/Data/Application/10710286-12D6-4963-9B56-7D7E3730BA29/Documents/user-e85906ff-aca6-457f-af46-793e46b51c71/conversationItemList |
所以后面再去用上面作为文件名去保存数据的话
－》相当于把数据写入已经存在的一个文件中（而不是文件中）
所以导致出错。。