#pragma mark--计算第n天的所有日期
-(void)calculation{
NSTimeInterval secondsPerDay = 24 * 60 * 60;
NSDate * today = [NSDate date];
NSDateFormatter *myDateFormatter = [[NSDateFormatter alloc] init];
[myDateFormatter setDateFormat:@"yyyy-MM-dd"];
for (int days = 0; days < 30; days ++) {
NSString *dateString = [myDateFormatter stringFromDate:[today dateByAddingTimeInterval:days * secondsPerDay]];
[self.titileArray addObject:dateString];
}
}
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