unity IOS xml序列化真机运行JIT问题

问题描述：

unity输出IOS真机调试，XML序列化出错，报错类似如下：

ExecutionEngineException: Attempting to JIT compile method 'System.Reflection.MonoProperty:GetterAdapterFrame<System.Collections.Generic.List'1<string>, int> (System.Reflection.MonoProperty/Getter'2<System.Collections.Generic.List'1<string>, int>,object) while running with --aot-only.

at System.Reflection.MonoProperty.GetValue (System.Object obj, System.Object[] index) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteListContent (System.Object container, System.Xml.Serialization.TypeData listType, System.Xml.Serialization.ListMap map, System.Object ob, System.Text.StringBuilder targetString) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteMemberElement (System.Xml.Serialization.XmlTypeMapElementInfo elem, System.Object memberValue) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteElementMembers (System.Xml.Serialization.ClassMap map, System.Object ob, Boolean isValueList) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElementElements (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObjectElement (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob, System.String element, System.String namesp) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteObject (System.Xml.Serialization.XmlTypeMapping typeMap, System.Object ob, System.String element, System.String namesp, Boolean isNullable, Boolean needType, Boolean writeWrappingElem) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializationWriterInterpreter.WriteRoot (System.Object ob) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializer.Serialize (System.Object o, System.Xml.Serialization.XmlSerializationWriter writer) [0x00000] in <filename unknown>:0 at System.Xml.Serialization.XmlSerializer.Serialize (System.Xml.XmlWriter writer, System.Object o, System.Xml.Serialization.XmlSerializerNamespaces namespaces) [0x00000] in <filename unknown>:0 

查阅资料地址

http://wiki.unity3d.com/index.php?title=Saving_and_Loading_Data:_XmlSerializer

问题解决：

iOS Devices

A NullReferenceException will be raised if you're using List<T> in your MonsterContainer class, use an array instead. Similarly the same exception is raised if you're using get and set to implement properties in the class you're trying to serialize.

在IOS上不能使用List<T>的类型，需要使用数组。在XML序列化属性的get、set方法中，也不能使用List<T>。