iphone - 使用单个 NSMutableArray 填充 UITableView 部分表

Question

很抱歉再次询问带有完整描述的问题。我拥有的结果数组具有从服务器获取的标题描述等，但问题是我想分段显示这些数据。

因此，假设如果有来自数组的三个部分，那么如何使用单个 resultArray 填充每个部分中的数据。

   - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
    {
return [categoryArray objectAtIndex:section];
}

resutArray 包含所有部分的所有数据，那么如何根据部分显示

数组的结构是

             ObjectData *theObject =[[ObjectData alloc] init];
            [theObject setCategory:[dict objectForKey:@"category"]];
            [theObject setSub_Category:[dict objectForKey:@"sub_Category"]];    
            [theObject setContent_Type:[dict objectForKey:@"content_Type"]];
            [theObject setContent_Title:[dict objectForKey:@"content_Title"]];
            [theObject setPublisher:[dict objectForKey:@"publisher"]];
            [theObject setContent_Description:[dict objectForKey:@"content_Description"]];
    [theObject setContent_ID:[dict objectForKey:@"content_ID"]];
    [theObject setContent_Source:[dict objectForKey:@"content_Source"]];
        [resultArray addObject:theObject];

Answer 1

看起来您的 ObjectData 具有名为类别的属性，并且您想要显示按类别分组的 ObjectData 的 TableView 。您可以执行此操作，生成一个 NSDictionary，其键 = 唯一类别，值 = 该类别的 ObjectData 的 NSArray。然后您使用该 NSDictionary 作为数据源的数据。

NSArray *tempArray =[[DataController staticVersion] startParsing:@"http://www.celeritas-solutions.com/pah_brd_v1/productivo/catalogMaster.php"];
// dictionary for cells, you'll probably want this to be ivar or property
NSMutableDictionary* dictionary = [NSMutableDictionary dictionary];
// array for headers, you'll probably want this to be ivar or property
NSMutableArray* categories = [NSMutableArray array];

for (int i = 0; i<[tempArray count]; i++) {

    id *item = [tempArray objectAtIndex:i];
    NSDictionary *dict = (NSDictionary *) item;
    ObjectData *theObject =[[ObjectData alloc] init];
    [theObject setCategory:[dict objectForKey:@"category"]];
    [theObject setSub_Category:[dict objectForKey:@"sub_Category"]];
    [theObject setContent_Type:[dict objectForKey:@"content_Type"]];
    [theObject setContent_Title:[dict objectForKey:@"content_Title"]];
    [theObject setPublisher:[dict objectForKey:@"publisher"]];
    [theObject setContent_Description:[dict objectForKey:@"content_Description"]];
    [theObject setContent_ID:[dict objectForKey:@"content_ID"]];
    [theObject setContent_Source:[dict objectForKey:@"content_Source"]];


    [resultArray addObject:theObject];
    [theObject release];
    theObject=nil;

    // here you populate that dictionary and categories array
    NSMutableArray* objs = [dictionary objectForKey:theObject.category];
    if(!objs)
    {
        objs = [NSMutableArray array];
        [dictionary setObject:objs forKey:theObject.category];
        [categories addObject:theObject.category];
    }
    [objs addObject:theObject];
}

然后在你的 Controller 中:

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    return [categories count] ;

}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
 {

      return [categories objectAtIndex:section];
}



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"CellID";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) 
    {
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:CellIdentifier];
    }

    NSString* category = [categories objectAtIndex: indexPath.section];
    NSMutableArray* objs = [dictionary objectForKey:category];
    ObjectData* obj = [objs objectAtIndex: indexPath.row];

    // populate cell here

}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    NSString* category = [categories objectAtIndex:section];
    NSMutableArray* objs = [dictionary objectForKey:category];
    return [objs count];
}

请注意，这只是一个示例，您可以根据需要对其进行优化。