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当我的tableview加载它从基于当前我们所在的星期从MySQL数据库抓取数据。这一切工作正常，但我也希望用户能够点击一个UIButton加载下周的数据。之后，按钮停留在那里，可以一遍又一遍地点击以进入下一个星期。按下按钮时，如何使用nscalendar＆nsdate进入下一周？
NSDate *date = [NSDate date];
NSCalendar *cal =[[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];
[cal setFirstWeekday:3]; //
NSDate *beginningOfWeek = nil;
[cal rangeOfUnit:NSWeekCalendarUnit startDate:&beginningOfWeek interval:nil forDate:date];
NSDateComponents *beginComponents = [cal components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekCalendarUnit | NSWeekdayCalendarUnit) fromDate:beginningOfWeek];
NSDateComponents *offset = [[NSDateComponents alloc]init];
[offset setDay:6];
[offset setHour:23];
NSDate *endOfWeek = [cal dateByAddingComponents:offset toDate:beginningOfWeek options:0];
NSDateComponents *endComponents = [cal components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekCalendarUnit | NSWeekdayCalendarUnit) fromDate:endOfWeek];
NSTimeInterval tiStart = [beginningOfWeek timeIntervalSince1970];
NSTimeInterval tiEnd = [endOfWeek timeIntervalSince1970];
NSString *startWeekString = [NSString stringWithFormat:@"%f", tiStart];
NSString *endWeekString = [NSString stringWithFormat:@"%f", tiEnd];
NSURL *url = [NSURL URLWithString:@"http://localhost/test.php"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setPostValue:startWeekString forKey:@"startweek"];
[request setPostValue:endWeekString forKey:@"endweek"];
[request setDelegate:self];
[request startAsynchronous];
}
-(IBAction)nextWeek:(id)sender {
}
什么是最好的方式去做这件事？