Question

我正在开发一个带有视图控制器和表格视图的ios应用程序。我正在尝试加载3组中的项目列表但是当我编译它时它显示正确的计数但没有显示所有项目jus重复项目。请帮忙。让我在这里发布我的代码。

@interface ViewController ()

@end

@implementation ViewController {
    NSArray *menuItems;
    NSArray *menuItems2;
    NSArray *dash;

}

- (id)initWithStyle:(UITableViewStyle)style
{
    self = [super initWithStyle:style];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor colorWithWhite:0.6f alpha:1.0f];
    self.tableView.backgroundColor = [UIColor colorWithWhite:0.6f alpha:1.0f];
    self.tableView.separatorColor = [UIColor colorWithWhite:0.15f alpha:0.2f];
    menuItems = @[@"itm1", @"itm2", @"itm3", @"itm4"];
    menuItems2 = @[@"itm1", @"itm2", @"itm3", @"itm4"];
    dash = @[@"itm1", @"itm2"];
}
#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // Return the number of sections.
    return 3;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    if (section == 0) {
        return [menuItems count];
    }
    if (section == 1) {
        return [menuItems2 count];
    }
    if (section == 2) {
        return [dash count];
    }
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = [menuItems objectAtIndex:indexPath.row];
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    return cell;
}

@end

Answer 1

需要编写cellForRowAtIndexPath...方法，以便根据单元格的节和行填充适当的数据。现在你不做任何事情，只是使用一个空单元格。

Answer 2

您不配置您的单元格。将单元格出列后，您必须设置其标题。

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *CellIdentifier = [menuItems objectAtIndex:indexPath.row];
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    // Get the correct array, depending on the current section.
    NSArray *items = nil;
    if (indexPath.section == 0) {
        items = menuItems;
    }
    else if (indexPath.section == 1) {
        items = menuItems2;
    }
    else if (indexPath.section == 2) {
        items = dash;
    }

    // Get the string from the array and set the cell's title
    NSString *title = items[indexPath.row];
    cell.textLabel.text = title;

    return cell;
}

一个包含3个组的合适视图

2 个答案: