ios:开始判断星期几

ios:开始判断星期几 传入：

NSDate  *data = [NSDate date];

- (NSString*)weekdayStringFromDate:(NSDate*)inputDate {

    

    NSArray *weekdays = [NSArray arrayWithObjects: [NSNull null], @"Sunday", @"周一", @"周二", @"周三", @"周四", @"周五", @"周六", nil];

    

    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

    

    NSTimeZone *timeZone = [[NSTimeZone alloc] initWithName:@"Asia/Shanghai"];

    

    [calendar setTimeZone: timeZone];

    

    NSCalendarUnit calendarUnit = NSWeekdayCalendarUnit;

    

    NSDateComponents *theComponents = [calendar components:calendarUnit fromDate:inputDate];

    

    return [weekdays objectAtIndex:theComponents.weekday];

    

}