我正在使用setValuesForKeysWithDictionary来填充我的模型对象。模型对象定义为@interfaceCommonModel:NSObject@property(nonatomic,copy)NSString*imageUrl;@property(nonatomic,copy)NSString*name;@property(nonatomic,copy)NSString*uuid;@property(nonatomic,strong)MetaDataModel*metaData;@property(nonatomic,copy)NSString*type;@pro

我有将一些json反序列化为对象的代码。此代码在iPhone5s、iPhone6和iPhone6+上运行良好。但是，在iPhone5或iPhone4s上运行时，出现错误:[__NSCFStringlongValue]:unrecognizedselectorsenttoinstance代码如下:publicclassSerializable:NSObject{funcdeserialize(dictionary:NSMutableDictionary){/*Removeentriesfromthedictionarythatdonothaveacorrespondingproperty

代码如下:funcobserveMessages(){letref=FIRDatabase.database().reference().child("messages")ref.observe(.childAdded,with:{(snapshot)inifletdictionary=snapshot.valueas?[String:AnyObject]{letmessage=Message()message.setValuesForKeys(dictionary)self.messages.append(message)//thiswillcrashbecauseofbackgro