Question

我需要创建一个包含1或2个部分的表视图，具体取决于某些条件。第一部分需要包含当年的所有剩余月份，第二部分包含下一年的前几个月，直至但不包括当月。

示例：

2009
  November
  December

2010
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October

这将是当前11月份的情景。但是，如果是1月份，则只有1个部分包含当年的所有12个月。

这一切都需要取决于手机的日期设置。

Answer 1

我实际上已经开始工作......无论它是否是最好的方法都可供讨论。这是我提出的代码：

- (void)viewDidLoad {
[super viewDidLoad];

NSArray *monthArray = [NSArray arrayWithObjects:@"January", @"February", @"March", @"April", @"May", @"June", @"July", @"August", @"September", @"October", @"November", @"December", nil];

NSCalendar *calendar= [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSCalendarUnit unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit;
NSDate *date = [NSDate date];
NSDateComponents *dateComponents = [calendar components:unitFlags fromDate:date];

NSInteger year = [dateComponents year];
NSInteger month = [dateComponents month];

currentYear = [NSString stringWithFormat:@"%d", year];
nextYear = [NSString stringWithFormat:@"%d", year+1];   


[dateComponents setMonth:month];

currentYearMonths = [[NSMutableArray alloc] init];
nextYearsMonths = [[NSMutableArray alloc] init];

for(uint i=month-1; i<=11; i++){
    [currentYearMonths addObject:[monthArray objectAtIndex:i]];
}
for(uint i=0; i<month-1; i++){
    [nextYearsMonths addObject:[monthArray objectAtIndex:i]];
}

monthList = [[NSArray alloc] initWithArray:monthArray];

[calendar release];
}


#pragma mark Table view methods

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    if([nextYearsMonths count] == 0)
        return 1;
    else
        return 2;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    if(section == 0){
        return currentYear;
    }else if(section == 1){
        return nextYear;
    }
}

// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    if(section == 0)
        return [currentYearMonths count];
    if(section == 1)
        return [nextYearsMonths count];
}


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    int section = [indexPath indexAtPosition:0];

    static NSString *CellIdentifier = @"Cell";  
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    int monthIndex = [indexPath indexAtPosition: [indexPath length] - 1];

    switch (section) {
        case 0:         
            if (cell == nil) {
                cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
            }           
            cell.textLabel.text = [currentYearMonths objectAtIndex:monthIndex];
            break;

        case 1:
            if (cell == nil) {
                cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
            }           
            cell.textLabel.text = [nextYearsMonths objectAtIndex:monthIndex];
            break;
    }   
    return cell;
}

月份TableView管理器

1 个答案: