2022-01-25 一个诡异的bug iOS中 time(0

贴代码

1. 添加监听程序回到前台通知

  [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(zse_applicationDidBecomeActive) name:UIApplicationDidBecomeActiveNotification
                                               object:nil];

2. 用NSUserDefaults 存了个时间戳 判断是否距离上次过了 xx时间 过了的话刷新
   就这几行代码就会发生bug 下拉刷新动画不会执行，也不会进行请求接口。

-(void)zse_applicationDidBecomeActive{    
    NSUserDefaults *def = [NSUserDefaults standardUserDefaults];
    NSInteger value =  [def integerForKey:@"zse_applicationDidBecomeActive_time"];
    if (value < time(0)) {
        [self.collectionView.mj_header beginRefreshing];
        [def setInteger:time(0) forKey:@"zse_applicationDidBecomeActive_time"];
    }
    
}