在XCode中将单元格添加到表视图（UITableView） [英] Adding cells to table view (UITableView) in XCode

问题描述

我是X-Code的新手，刚开始使用我的第一个应用程序。我正在使用情节提要。在导航控制器场景中，我添加了一个具有两个单元格的MasterViewController，这导致了两个DetailViewControllers（Detail1和Detail 2）。

I'm new to X-Code and have just started working on my first app. I'm using Storyboards. To the Navigation Controller scene I've added a MasterViewController with two cells, which leads to two DetailViewControllers (Detail1 & Detail 2).

• 列数= 1


• 列数= 2

我已添加

但是当我运行应用程序时，我只能看到第一个单元格x2。

But when I run the app, I can only see the first cell x2.

当我查看MasterViewController.m时，可以看到第一个单元格的代码，但是我不知道如何插入第二个单元格，等等！

When I look in the MasterViewController.m I can see the code for the first cell, but I don't understand how to insert the second cell etc!

我知道解决方案很简单，并且我一直在寻找答案三天，我觉得很愚蠢，但是我现在确实需要一些帮助，

I know the solution is easy and I've been looking for the answer for 3 days now, I feel stupid but I really need some help now,,

有人可以帮助我了解如何在代码中添加更多单元格，也许还可以更多地了解Table View代码？

Can someone help me understand how to add more cells in the code, and maybe understand the Table View Code a bit more?

这到目前为止是表视图的代码：

This is the code for the table view so far:

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return 2;
}

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

// Configure the cell...

return cell;
}

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the specified item to be editable.
return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
    // Delete the row from the data source
    [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath][withRowAnimation:UITableViewRowAnimationFade];
}   
else if (editingStyle == UITableViewCellEditingStyleInsert) {
    // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
// Return NO if you do not want the item to be re-orderable.
return YES;
}
*/

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
/*
 <#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
 // ...
 // Pass the selected object to the new view controller.
 [self.navigationController pushViewController:detailViewController animated:YES];
 */
}

@end

推荐答案

假设您有一个名为arr的数组。

Lets say you have an array called arr.

然后，当调用numberOfRowsInSection时，您必须返回数组中的对象数。

Then you have to return the number of objects in the array when numberOfRowsInSection gets called.

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.
    return [arr count];
}

您的cellForRowAtIndexPath委托方法应如下所示以打印出数组中的字符串

Your cellForRowAtIndexPath delegate method should look like this to print out the strings in the array.

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

static NSString *CellIdentifier = @"Formal";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle 
                                   reuseIdentifier:CellIdentifier] autorelease];
}

// Configure the cell.

cell.textLabel.text = [arr objectAtIndex:indexPath.row];

    return cell;
}

希望这会有所帮助！

这篇关于在XCode中将单元格添加到表视图（UITableView）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！