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- (NSString *)calculateWeek:(NSDate *)date{ //计算week数 NSCalendar * myCalendar = [NSCalendar currentCalendar]; myCalendar.timeZone = [NSTimeZone systemTimeZone]; NSInteger week = [[myCalendar components:NSWeekdayCalendarUnit fromDate:date] weekday]; NSLog(@"week : %zd",week); switch (week) { case 1: { return @"周日"; } case 2: { return @"周一"; } case 3: { return @"周二"; } case 4: { return @"周三"; } case 5: { return @"周四"; } case 6: { return @"周五"; } case 7: { return @"周六"; } } return @""; }