Question

在我的UIViewController中，我有一个表格视图，其单元格显示文字。 UITableView的数据源和代理是我的UIViewController。单元格显示的文本存储在NSMutableArray。

中

我最初可以使用文本填充单元格，但我还想实现一项功能，当用户点击特定行时，单元格将被删除并重新加载表格。

这是我的代码及其详细信息：

taskList is a NSMutableArray
png images are ones that i need to add in every cell
my table contains only one section
the last row of the table will always show "Create New Task" with a "+" sign as an image
as user adds other task (handled by a separate controller), the taask gets added to the current table.The task will have a "-" sign image.
When user clicks on such a row, it will get deleted from the table

UIViewController的代码：

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.

    taskList = [[NSMutableArray alloc] init];
    addNewTask = [[AddTaskViewController alloc] init];

    [taskList addObject:@"Create New Task"];
    [taskList addObject:@"aaaaa"];
    [taskList addObject:@"bbbbb"];
    [taskList addObject:@"ccccc"];
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    indexNumberInTaskList = [taskList count] - 1;
    return [taskList count];
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell;
    cell = [tableView dequeueReusableCellWithIdentifier:@"myCell"];

    if(cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"myCell"];
    }

    if(indexNumberInTaskList >= 0)
    {
        cell.textLabel.text = [taskList objectAtIndex:indexNumberInTaskList];
        if(indexPath.row == ([taskList count] - 1))
        {
            cell.imageView.image = [UIImage imageNamed:@"add.png"];
        }
        else
        {
            cell.imageView.image = [UIImage imageNamed:@"remove.png"];
        }
        indexNumberInTaskList = indexNumberInTaskList - 1;
    }

    return cell;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    int selectedRow = indexPath.row;
    if(selectedRow == ([taskList count]-1))
    {
        [self presentViewController:addNewTask animated:YES completion:NULL];
    }
    else
    {
        [taskList removeObjectAtIndex:indexPath.row];
        [self.createDaily reloadData];
    }
}

Answer 1

最少的代码方式是：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

[self.modelArray removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

}

只需将多个更改一起批处理即可：

[tableView beginUpdates];
[tableView endUpdates];

Answer 2

您可以使用tableview的didSelectRowAtindexPath方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [arrayData removeObjectAtIndex:indexPath.row];
    [tableView beginUpdates];
    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow: indexPath.row inSection:0]] withRowAnimation:UITableViewRowAnimationRight];
    [tableView endUpdates];
}

Answer 3

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [YourArr removeObjectAtIndex:indexPath.row];
    [YourTbl reloadData];
}

Answer 4

根据您的-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath委托方法

(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath`

NSArray *toBeDeleted = [[NSArray alloc] initWithObjects: indexPath];
 // Data deletion
[tableData removeObjectAtIndex:(indexPath.row)];
[tableView beginUpdates];
[tableView deleteRowsAtIndexPaths:toBeDeleted withRowAnimation:UITableViewRowAnimationFade];
[tableView endUpdates];


}

编辑：似乎每个人都有相同的答案！

Answer 5

添加此方法

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [arrData removeObjectAtIndex:indexPath.row];
    [tableView beginUpdates];
    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow: indexPath.row inSection:0]] withRowAnimation:UITableViewRowAnimationRight];
    [tableView endUpdates];
}

在水龙头上移除UITableViewCell

5 个答案: