Question

我有一些数据库，我正在生成这样的数据。

首先从数据库中获取categoryid和categoryName。该表的sectiontitle是categoryName。

这是一些示例代码

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return categoryNamesList.count;
}

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

}

我想在类别ID的基础上生成flashcardid和flashcard名称。 categoryid存储在数据库中，如1,2,3。

所以我在查询中传递categoryid：

select flashCardId,flashCardName from flashCardInfo where categoryId=(parameter)

在flashcardid中我得到1,2,3并且在flashcards名称数组中我第一次得到flashcard1，flashcard2，flashcard3现在我想在我的单元格上生成文本，如第1部分的firstcategoryname，然后是相关的flashcard名称行然后在第二部分第二类别名称和行上相关的flashcardsNames。在哪里增加类别ID，以便我得到下一个名称nad id以及如何在单元格上设置文本

现在如何在

上生成此内容

这是代码;它位于indexviewcontroller.m文件中。

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return categoryNamesList.count;
}


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

    return flashCardsNamesList.count;       

}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"Cell";  
CustomCell *cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];  
if (cell == nil) {      
    cell = [[[CustomCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];      
}


    if(categoryID<listOfCategoryId.count)
    {   
        for(int i=0;i<flashCardsNamesList.count;i++)
        {
        [cell.FlashCardsNames setText:[flashCardsNamesList objectAtIndex:i]];
        }       
    categoryID++;
    [self getFlashCard:categoryID];
    }           
    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [indexTableView deselectRowAtIndexPath:indexPath animated:YES];

    for(int i=0;i<flashCardsId.count;i++)
    {
            questionViewControllerObj = [[flashCardQuestionViewController alloc] initWithNibName:@"FlashCardQuestionView" bundle:[NSBundle mainBundle]];
            [self.navigationController pushViewController:questionViewControllerObj animated:YES];                  
            questionViewControllerObj.flashcardid = [[flashCardsId objectAtIndex:i] intValue];
            questionViewControllerObj.categoryid = [[listOfCategoryId objectAtIndex:indexPath.section]intValue];
    }

}


/*
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {

    if (editingStyle == UITableViewCellEditingStyleDelete) {
    }
    if (editingStyle == UITableViewCellEditingStyleInsert) {
    }
}
*/
/*
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    return YES;
}
*/
/*
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/
/*
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    return YES;
}
*/

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

}

# pragma mark -
# pragma mark viewDidLoad

- (void)viewDidLoad {
    [super viewDidLoad];    
    [self getIntialData];
    self.navigationItem.title = @"Index";
    indexTableView.backgroundColor = [UIColor lightGrayColor];  
}


- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
}

- (void)viewWillDisappear:(BOOL)animated {
}

- (void)viewDidDisappear:(BOOL)animated {
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

#pragma mark -
#pragma mark Database Methods


-(void)getIntialData
{
    [self getcategory];
    [self getFlashCard:categoryID]; 

}
  //getting categoryid,categoryname from the database
-(void)getcategory
{
    if(listOfCategoryId!=nil)
        [listOfCategoryId removeAllObjects];
    else
        listOfCategoryId = [[NSMutableArray alloc] init];

    if(categoryNamesList!=nil)
        [categoryNamesList removeAllObjects];
    else
        categoryNamesList = [[NSMutableArray alloc] init];

    if(listOfCategoryType!=nil)
        [listOfCategoryType removeAllObjects];
    else
        listOfCategoryType = [[NSMutableArray alloc] init];

    clsDatabase *clsDatabaseObject = [[clsDatabase alloc] init];
    sqlite3_stmt *dataRows = [clsDatabaseObject getDataset:"select categoryId,categoryName,categoryType from cardCategoryInfo"];
    while(sqlite3_step(dataRows) == SQLITE_ROW)
    {       
        [listOfCategoryId addObject:[NSNumber numberWithInt:sqlite3_column_int(dataRows,0)]];
        [categoryNamesList addObject: [NSString stringWithUTF8String:(char *)sqlite3_column_text(dataRows,1)]] ;
        [listOfCategoryType addObject:[NSNumber numberWithInt:sqlite3_column_int(dataRows,2)]];
    }
    sqlite3_finalize(dataRows);
    [clsDatabaseObject release];    
    categoryID = [[listOfCategoryId objectAtIndex:categoryID] intValue];
}


   //getting flashcardId and flashcard name from categoryid
-(void)getFlashCard:(int)categoryid
{
    if(flashCardsId!=nil)
        [flashCardsId removeAllObjects];
    else
        flashCardsId = [[NSMutableArray alloc] init];

    if(flashCardsNamesList!=nil)
        [flashCardsNamesList removeAllObjects];
    else
        flashCardsNamesList = [[NSMutableArray alloc] init];



    NSString *martialStr=[NSString stringWithFormat:@"%d", categoryid];

    NSString *queryStr=[[NSString alloc] initWithString:@"select flashCardId,flashCardName from flashCardInfo where categoryId="];
    queryStr=[queryStr stringByAppendingString:martialStr];


    unsigned int lengthOfString=[queryStr length];
    char temp2[lengthOfString +1];
    strcpy(temp2, [queryStr cStringUsingEncoding:NSUTF8StringEncoding]);    
    clsDatabase *clsDatabaseObject = [[clsDatabase alloc] init];    
    sqlite3_stmt *dataRows = [clsDatabaseObject getDataset:temp2];
    while(sqlite3_step(dataRows) == SQLITE_ROW)
    {       
        [flashCardsId addObject:[NSNumber numberWithInt:sqlite3_column_int(dataRows,0)]];       
        [flashCardsNamesList addObject:[NSString stringWithUTF8String:(char *)sqlite3_column_text(dataRows,1)]];    

    }
    sqlite3_finalize(dataRows);
    [clsDatabaseObject release];

}

- (void)dealloc {
    [self.navigationController popViewControllerAnimated:YES];
    [listOfCategoryId release];
    [listOfCategoryType release];
    [questionViewControllerObj release];
    [categoryNamesList release];
    [flashCardsNamesList release];
    [flashCardsId release];
    [indexTableView release];   
    [super dealloc];
}



@end

Answer 1

您需要实现cellForRowAtIndexPath来填充每个表格部分中的行。

e.g。

- (UITableViewCell *)tableView:(UITableView *)tableView
    cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
  // This method gets called for each section and row in your table
  NSUInteger cellRow = [indexPath row];
  NSUInteger cellSection = [indexPath section];

  // Create new table cell
  // Deliberately ignoring reusing cells to keep this example simple
  UITableViewCell *cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"MyIdentifier"] autorelease];

  // Now build up a string with the info you want in it based on
  // data in cellSection and cellRow, and set the cell text
  cell.text = @"put your text here";

更新：如果您希望有人为您编写所有代码，则需要编辑您的帖子，使其更短更清晰。只需解释一下您拥有的数据结构，以及表格的外观，例如：

DATA STRUCTURES 

-NSDictionary of section names as keys. 
-Each NSDictionary key points at an NSArray, which holds NSStrings that need to go in each row. 

DESIRED OUTPUT 

section 0 heading 
row 0 
row 1 

section 1 heading 
row 0 
row 1

等

Answer 2

重用细胞

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"MyIdentifier"];
if (cell == nil) {
    cell = [[[UITableViewCell alloc]  initWithFrame:CGRectZero reuseIdentifier:@"MyIdentifier"] autorelease];
}
// Configure the cell
...
return cell;

如何在uitableview单元的不同部分中从数组生成行上的不同数据

2 个答案: