iOS - 判断程序每天只执行一次

一如既往yes

于 2021-07-22 08:48:29 发布

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本文链接：https://blog.youkuaiyun.com/Tony_Hsu/article/details/118417689

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NSUserDefaults NSDate 日期比较存储更新

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NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults];
NSDate *currentDate = [NSDate date];
NSDate *lastDate = [userDefault objectForKey:@"currentDate"];
    
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyy-MM-dd"];
    
NSString *lastDateString = [dateFormatter stringFromDate:lastDate];
NSString *currentDateString = [dateFormatter stringFromDate:currentDate];
//    NSLog(@"日期比较：之前：%@ 现在：%@", ageDateString, currentDateString);
    
if ([lastDateString isEqualToString:currentDateString]) {

    NSLog(@"一天就显示一次");
 } else {

    // 需要执行的方法写在这里
    NSDate *currentDate = [NSDate date];
    [userDefault setObject:currentDate forKey:@"currentDate"];
    [userDefault synchronize];
 }