首页 > 代码库 > iOS 数据储存--归档
iOS 数据储存--归档
四种数据持久化方式 http://www.cocoachina.com/ios/20160617/16739.html
／／先把数据在model中归解档
。h
@property(nonatomic,copy)NSString *email;
@property(nonatomic,copy)NSString *uid;
@property(nonatomic,copy)NSString *mobile;
@property(nonatomic,copy)NSString *vip;
@property(nonatomic,copy)NSString *regtime;
@property(nonatomic,copy)NSString *is_sec_pwd;
*is_sec_pwd;
。m
#import "UserModel.h"
static UserModel *model;
@implementation UserModel
+(UserModel *)defaultCellModel{
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
if (!model) {
model = [[UserModel alloc]init];
}
});
return model;
}
- (void)encodeWithCoder:(NSCoder *)aCoder{
[aCoder encodeObject:self.account forKey:@"account"];
[aCoder encodeObject:self.regmobile forKey:@"regmobile"];
[aCoder encodeObject:self.sec1_question forKey:@"sec1_question"];
[aCoder encodeObject:self.headimage forKey:@"headimage"];
[aCoder encodeObject:self.expert_audit forKey:@"expert_audit"];
}
- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder{
self = [super init];
if(self)
{
self.account = [aDecoder decodeObjectForKey:@"account"];
self.regmobile = [aDecoder decodeObjectForKey:@"regmobile"];
self.sec1_question = [aDecoder decodeObjectForKey:@"sec1_question"];
self.headimage = [aDecoder decodeObjectForKey:@"headimage"];
}
return self;
}
@end
／／
NSUserDefaults
保存
Model数据-》归档-》NSUserdefaults
NSUserDefaults * defaults = [NSUserDefaults standardUserDefaults];
//不能直接存取NSObject，需要先归档转成NSData
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:model];
[defaults setObject:data forKey:@"model"];
NSUserdefaults-》解档-》Model数据
NSData *modeldata =http://www.mamicode.com/ [[NSUserDefaults standardUserDefaults]objectForKey:@"model"];
usermodel = [NSKeyedUnarchiver unarchiveObjectWithData:modeldata];
／／文件中保存
#import "ViewController.h"#import "linePesist.h"//导入数据模型类#define CodeString @"CodeString"@implementation ViewController-(NSString *)dataFile{NSArray *ar = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES);NSString *fielpath = [ar objectAtIndex:0];return [fielpath stringByAppendingPathComponent:@"data.archive"];//改修后缀名，以免与属性列表创建的文件重复，而加载成旧的的文件。 不用查字典了。。archive表归档}- (void)viewDidLoad {[super viewDidLoad];NSString *filepath = [self dataFile];NSLog(@"%@",filepath);if([[NSFileManager defaultManager]fileExistsAtPath:filepath]) {//创建2个实例NSData *data = [[NSData alloc]initWithContentsOfFile:filepath]; NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc]initForReadingWithData:data];//把已归档的对象读取。赋值给linepesistlinePesist *linepesist =[unarchiver decodeObjectForKey:CodeString]; [unarchiver finishDecoding];//完成解档for(int i = 0;iiOS 数据储存--归档
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。