我在游戏中使用SharedObject来存储玩家在游戏中的进度(级别得分，解锁级别等)。
一切工作正常，但是问题是当我更新游戏(使用相同的证书以及相同的.swf和.ipa文件的名称)时，当更新游戏时，旧的SharedObject被删除了，这对于我来说是一个很大的问题游戏和对我来说。
两种版本的游戏均使用Flash CS 6和Air SDK 3.5制作。
知道为什么删除SharedObject时，如何防止这种情况？
最佳答案
我假设SharedObject被覆盖的原因是因为它在转换过程中与.ipa bundle 在一起。
我了解这对挽救SharedObject不会有帮助，但您可以尝试使用flash.filesystem将数据读/写到首选项文件中，而不是将来使用SharedObject。
以下是我在自己的工作中使用的我的Archive类，但是我以前从未为iOS开发过，因此我不确定它是否可以像在其他部署目标上那样工作，尽管我相信应该如此。
用例:
//Imports
import com.mattie.data.Archive;
import com.mattie.events.ArchiveEvent;
//Constants
private static const PREF_CANVAS_VOLUME:String = "prefCanvasVolume";
private static const DEFAULT_VOLUME:Number = 0.5;
//Initialize Archive
private function initArchive():void
{
archive = new Archive();
archive.addEventListener(ArchiveEvent.LOAD, init);
archive.load();
}
//Initialize
private function init(event:ArchiveEvent):void
{
archive.removeEventListener(ArchiveEvent.LOAD, init);
canvasVolume = archive.read(PREF_CANVAS_VOLUME, DEFAULT_VOLUME);
}
//Application Exiting Event Handler
private function applicationExitingEventHandler(event:Event):void
{
stage.nativeWindow.removeEventListener(Event.CLOSING, applicationExitingEventHandler);
archive.write(PREF_CANVAS_VOLUME, canvas.volume);
archive.addEventListener(ArchiveEvent.SAVE, archiveSavedEventHandler);
archive.save();
}
//Archive Saved Event Handler
private function archiveSavedEventHandler(event:ArchiveEvent):void
{
archive.removeEventListener(ArchiveEvent.SAVE, archiveSavedEventHandler);
NativeApplication.nativeApplication.exit();
}
Archive Class
package com.mattie.data
{
//Imports
import com.mattie.events.ArchiveEvent;
import flash.data.EncryptedLocalStore;
import flash.desktop.NativeApplication;
import flash.events.EventDispatcher;
import flash.filesystem.File;
import flash.filesystem.FileMode;
import flash.filesystem.FileStream;
import flash.net.registerClassAlias;
import flash.utils.ByteArray;
//Class
public final class Archive extends EventDispatcher
{
//Properties
private static var singleton:Archive;
//Variables
private var file:File;
private var data:Object;
//Constructor
public function Archive()
{
if (singleton)
{
throw new Error("Archive is a singleton that is only accessible via the \"archive\" public property.");
}
file = File.applicationStorageDirectory.resolvePath(NativeApplication.nativeApplication.applicationID + "Archive");
data = new Object();
registerClassAlias("Item", Item);
}
//Load
public function load():void
{
if (file.exists)
{
var fileStream:FileStream = new FileStream();
fileStream.open(file, FileMode.READ);
data = fileStream.readObject();
fileStream.close();
}
dispatchEvent(new ArchiveEvent(ArchiveEvent.LOAD));
}
//Read
public function read(key:String, defaultValue:* = null):*
{
var value:* = defaultValue;
if (data[key] != undefined)
{
var item:Item = Item(data[key]);
if (item.encrypted)
{
var bytes:ByteArray = EncryptedLocalStore.getItem(key);
if (bytes == null)
{
return value;
}
switch (item.value)
{
case "Boolean": value = bytes.readBoolean(); break;
case "int": value = bytes.readInt(); break;
case "uint": value = bytes.readUnsignedInt(); break;
case "Number": value = bytes.readDouble(); break;
case "ByteArray": bytes.readBytes(value = new ByteArray()); break;
default: value = bytes.readUTFBytes(bytes.length);
}
}
else
{
value = item.value;
}
}
return value;
}
//Write
public function write(key:String, value:*, encrypted:Boolean = false, autoSave:Boolean = false):void
{
var oldValue:* = read(key);
if (oldValue != value)
{
var item:Item = new Item();
item.encrypted = encrypted;
if (encrypted)
{
var constructorString:String = String(value.constructor);
constructorString = constructorString.substring(constructorString.lastIndexOf(" ") + 1, constructorString.length - 1);
item.value = constructorString;
var bytes:ByteArray = new ByteArray();
switch (value.constructor)
{
case Boolean: bytes.writeBoolean(value); break;
case int: bytes.writeInt(value); break;
case uint: bytes.writeUnsignedInt(value); break;
case Number: bytes.writeDouble(value); break;
case ByteArray: bytes.writeBytes(value); break;
default: bytes.writeUTFBytes(value);
}
EncryptedLocalStore.setItem(key, bytes);
}
else
{
item.value = value;
}
data[key] = item;
dispatchEvent(new ArchiveEvent(ArchiveEvent.WRITE, key, oldValue, value));
if (autoSave)
{
save();
}
}
}
//Remove
public function remove(key:String, autoSave:Boolean = false):void
{
if (data[key] != undefined)
{
var oldValue:* = read(key);
if (Item(data[key]).encrypted)
{
EncryptedLocalStore.removeItem(key);
}
delete data[key];
dispatchEvent(new ArchiveEvent(ArchiveEvent.DELETE, key, oldValue));
if (autoSave)
{
save();
}
}
}
//Contains
public function contains(key:String):Boolean
{
return (data[key] != undefined);
}
//Save
public function save():void
{
var fileStream:FileStream = new FileStream();
fileStream.open(file, FileMode.WRITE);
fileStream.writeObject(data);
fileStream.close();
dispatchEvent(new ArchiveEvent(ArchiveEvent.SAVE));
}
//Get Singleton
public static function get archive():Archive
{
if (!singleton)
{
singleton = new Archive();
}
return singleton;
}
}
}
//Item
class Item
{
//Variables
public var value:*;
public var encrypted:Boolean = false;
}
Archive Event Class
package com.mattie.events
{
//Imports
import flash.events.Event;
//Class
public class ArchiveEvent extends Event
{
//Constants
public static const LOAD:String = "load";
public static const WRITE:String = "write";
public static const DELETE:String = "delete";
public static const SAVE:String = "save";
//Properties
public var key:String;
public var oldValue:*;
public var newValue:*;
//Constructor
public function ArchiveEvent(type:String, key:String = null, oldValue:* = null, newValue:* = null)
{
super(type);
this.key = key;
this.oldValue = oldValue;
this.newValue = newValue;
}
//Clone
public override function clone():Event
{
return new ArchiveEvent(type, key, oldValue, newValue);
}
//To String
public override function toString():String
{
return formatToString("ArchiveEvent", "type", "key", "oldValue", "newValue");
}
}
}