关于注册登陆时候进行的归档解档--严焕培

#import <Foundation/Foundation.h>
#import "SBModel.h"
#import "AutoCoding.h"


@interface UserModel : SBModel <NSCoding>
/* 命名方式 OC/Java都是遵守驼峰原则/波浪命名方法
 在PHP, Linux里面命名是按照 _ 隔开 全小写命名
 需要把
 */
//Login
@property (nonatomic, strong) NSString *bid;
@property (nonatomic, strong) NSString *mobile;
@property (nonatomic, strong) NSString *token;


// 表示自己当前用户 单例
+ (id) currUser;

// 保存当前用户myself
+ (void) saveMyself;
// 恢复当前用户
+ (id) restoreMyself;

+ (BOOL) isExistMyself;
+ (void) deleteSaveMyself;

// 把对象self拷贝到target对象中
- (id) copyToObject:(id)target;
@end

//#define myself [UserModel currUser]
#define myself ((UserModel *)[UserModel currUser])





#import "UserModel.h"

@implementation UserModel

+ (id) currUser {
    static UserModel *um;
    if (um == nil)
        um = [[UserModel alloc] init];
    return um;
}

#pragma mark - 使用AutoCoding自动进行归档

static inline NSString * myselfSaveFile() {
    return [NSHomeDirectory() stringByAppendingString:@"/Library/Caches/myself"];
}

+ (void) saveMyself {
    NSString *path = myselfSaveFile();
    // 使用自动归档开源库 直接把对象写入到文件中
    [myself writeToFile:path atomically:YES];
    
}

// 恢复当前用户
+ (id) restoreMyself {
    NSString *path = myselfSaveFile();
    // 从path路径找到并解档案
    UserModel *um = [self objectWithContentsOfFile:path];
    return um;
}

+ (BOOL) isExistMyself {
    NSString *path = myselfSaveFile();
    id obj = [self objectWithContentsOfFile:path];
    
    if ([obj isKindOfClass:[self class]]) {
        return YES;
    }
    return NO;
}

+ (void) deleteSaveMyself {
    NSString *path = myselfSaveFile();
    [[NSFileManager defaultManager] removeItemAtPath:path error:nil];
}

#pragma mark - 自动实现了拷贝NSCopying功能
- (id)copyWithZone:(NSZone *)zone {
    id copy = [[[self class] alloc] init];
    for (NSString *key in [self codableProperties]) {
        [copy setValue:[self valueForKey:key] forKey:key];
    }
    return copy;
}

// 把self存于target对象中
- (id) copyToObject:(id)target {
    for (NSString *key in [self codableProperties]) {
        [target setValue:[self valueForKey:key] forKey:key];
    }
    return target;
}

@end