做服装外单的网站,韩国seocaso,设计logo的网址,济南建设图审将自定义的类的数据以数组的形式直接存储到NSUserDefaults中会报错#xff0c;需要进行转换#xff0c;且需要将该类实现NSCoding协议。 e.g. 存储过程 NSMutableArray *archiveArr [NSMutableArray arrayWithCapacity:self.STNArrayList.count];for (STNArrayList *singleL…将自定义的类的数据以数组的形式直接存储到NSUserDefaults中会报错需要进行转换且需要将该类实现NSCoding协议。 e.g. 存储过程 NSMutableArray *archiveArr [NSMutableArray arrayWithCapacity:self.STNArrayList.count];for (STNArrayList *singleList in self.STNArrayList) {NSData *listEncodedObject [NSKeyedArchiver archivedDataWithRootObject:singleList];[archiveArr addObject:listEncodedObject];}
//可以将archiveArr存入NSUserDefaults中了 读取过程 NSArray *localSavedArr ;//从NSUserDefaults中读取本地存储的数据NSMutableArray *mutableArr [NSMutableArray arrayWithCapacity:localSavedArr.count];for (NSData *data in localSavedArr) {STNArrayList *singleList [NSKeyedUnarchiver unarchiveObjectWithData:data];[mutableArr addObject:singleList];}// 现在可以访问mutableArr来获得STNArrayList的值 在STNArrayList类中实现NSCoding协议 - (id)initWithCoder:(NSCoder *)aDecoder
{if (self [super init]) {_title [aDecoder decodeObjectForKey:JSON_KEY];}return self;
}- (void)encodeWithCoder:(NSCoder *)aCoder
{[aCoder encodeObject:_title forKey:JSON_KEY];
} 转载于:https://www.cnblogs.com/stonewong/p/4931630.html
