长时间不用，竟然写不出来了，之前的一个项目里的用户信息单例，现在看来当初理解的很透测，记下来，方便随时复习。
// QYUserSingleton.m
// Hallyu
//
// Created by XJW on 14-9-29.
// Copyright (c) 2014年 qingyun. All rights reserved.
//
#import "QYUserSingleton.h"
@implementation QYUserSingleton
static QYUserSingleton *userIn;
+ (id) allocWithZone:(struct _NSZone *)zone
{
static QYUserSingleton *userIn;//静态指针，
static dispatch_once_t once ;
//NSLog(@"%ld",once);
dispatch_once(&once, ^{
// userIn = [[QYUserSingleton alloc] init];
userIn = [super allocWithZone:zone];
});
return userIn;
}
+ (QYUserSingleton *)sharedUserSingleton
{
if (!userIn) {
userIn = [[QYUserSingleton alloc]init];
}
return userIn;
}
- (id)init
{
self = [super init];
if (self) {
[self initWithAccount:@"" andPhone:@"" andTestNum:@"" andPasscode:@"" andUserId:@"" andNickName:@"" andfavouriyesCount:@"" andFollowersCount:@"" andIsLogin:NO andIcon_url:@"" ];
}
return self;
}
- (void)initWithAccount:(NSString *)account
andPhone:(NSString *)phone
andTestNum:(NSString *)testNum
andPasscode:(NSString *)passcode
andUserId:(NSString *)userId
andNickName:(NSString *)nickName
andfavouriyesCount:(NSString *)favCount
andFollowersCount:(NSString *)followersCount
andIsLogin:(BOOL)isLogin
andIcon_url:(NSString *)iconUrl
{
_phoneNum = [[NSString alloc]initWithString:phone];
_testNum = [[NSString alloc]initWithString:testNum];
_account = [[NSString alloc]initWithString:account];
_passcode = [[NSString alloc]initWithString:passcode];
_user_id = [[NSString alloc]initWithString:userId];
_nickName = [[NSString alloc]initWithString:nickName];
_favourites_count = [[NSString alloc]initWithString:favCount];
_follwers_count = [[NSString alloc]initWithString:followersCount];
}
- (id)copy
{
return self;
}
@end
原文：http://blog.csdn.net/xjingweiu/article/details/41510813