ios 一天之内弹窗一次

//一天之内弹窗一次

NSUserDefaults*userDefault=[NSUserDefaults standardUserDefaults];

// NSLog(@"之前时间：%@", [userDefault objectForKey:@"nowDate"]);//之前存储的时间

// NSLog(@"现在时间%@",[NSDate date]);

//现在的时间NSDate*now=[NSDate date];

NSDate*agoDate=[userDefault objectForKey:@"nowDate"];

NSDateFormatter*dateFormatter=[[NSDateFormatter alloc]init];

[dateFormatter setDateFormat:@"yyyy-MM-dd"];

NSString*ageDateString=[dateFormatter stringFromDate:agoDate];

NSString*nowDateString=[dateFormatter stringFromDate:now];

if([ageDateString isEqualToString:nowDateString]){

NSLog(@"一天就显示一次");

}else{

}