Object-c的单例设计

来源：互联网发布：淘宝运营方案编辑：程序博客网时间：2024/06/06 20:20

贡献一个单例的例子供大家学习！

- (id)init
{
if ( self = [super init] )
{

  info = [[NSMutableDictionary dictionaryWithContentsOfFile:getFullPath(@"localUserInfo")]retain];
  if (!info) {
   info = [[NSMutableDictionary dictionaryWithObjectsAndKeys:
     @"",@"phoneNumber",
     @"",@"nickName",
     nil]retain];
  }
}
return self;
}

+ (LocalUserInfo *)sharedSingleton
{
static LocalUserInfo *sharedSingleton;

@synchronized(self)
{
  if (!sharedSingleton)
   sharedSingleton = [[LocalUserInfo alloc] init];

  return sharedSingleton;
}
}

+ (NSString *)phoneNumber{

return [[[LocalUserInfo sharedSingleton] info] objectForKey:@"phoneNumber"];

}
+ (NSString *)nickName{

return [[[LocalUserInfo sharedSingleton] info] objectForKey:@"nickName"];

}
+ (void)setPhoneNumber :(NSString *) data{
[[[LocalUserInfo sharedSingleton] info] setObject:data forKey:@"phoneNumber"];
[[[LocalUserInfo sharedSingleton] info] writeToFile:getFullPath(@"localUserInfo") atomically:NO];
}

+ (void)setNickName:(NSString *) data{

[[[LocalUserInfo sharedSingleton] info] setObject:data forKey:@"nickName"];
[[[LocalUserInfo sharedSingleton] info] writeToFile:getFullPath(@"localUserInfo") atomically:NO];
}
@end