用字符串向量填充SWT表

I'm self-teaching Java GUIs and am trying to implement an older text-based program I made into something with an actual menu. In using WindowBuilder on Eclipse for formatting and internet resources to help, but I've hit a bit of a roadblock.

我正在自学Java GUI，我正在尝试实现一个较旧的基于文本的程序，我用实际的菜单制作了一些东西。在Eclipse上使用WindowBuilder进行格式化和互联网资源帮助，但我遇到了一些障碍。

I've got a one-dimensional vector that can hold any number of strings. I'd like to display it in a table, but I'm not quite sure if I'm doing it right. All of my back-end stuff works fine, I'm just really struggling with the GUI. Any tips/corrections/resources you're willing to offer are greatly appreciated! I've been bumbling around for hours and I fear I've hit a wall. To be honest I'm having trouble testing the GUI within WindowBuilder as well, but that's another story. The relevant code in my GUI class is as follows:

我有一个可以容纳任意数量字符串的一维向量。我想将它显示在一张桌子上，但我不确定我是否正确行事。我的所有后端工作都运行良好，我只是在努力使用GUI。我们非常感谢您愿意提供的任何提示/更正/资源！我已经笨拙地笨拙几个小时，我担心我撞墙了。说实话，我在WindowBuilder中测试GUI时遇到了麻烦，但这是另一个故事。我的GUI类中的相关代码如下：

    Vector<String> demo = new Vector<String>();
    //nonsense elements just for the sake of debugging
    demo.addElement("Line1");  
    demo.addElement("Line2");  
    demo.addElement("Line3");  
    demo.addElement("Line4");  
    demo.addElement("Line5");  
    demo.addElement("Line6"); 


    table = new Table(this, SWT.BORDER | SWT.FULL_SELECTION);
    table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
    table.setHeaderVisible(true);
    table.setLinesVisible(true);

    TableItem item;
    for(int i = 0; i < demo.size(); i++) 
    {
        // Create a new TableItem for each line in the vector (each row)
        item = new TableItem(table, SWT.NONE);
        for (int j = 1; j <= demo.size(); j++) {
            // Populate the item
            item.setText(j - 1, demo.get(j));
        }
    }

1 个解决方案

#1

The problem is this line:

问题是这一行：

item.setText(j - 1, demo.get(j));

You only have one column (since you didn't create any yourself, the table assumes there is only one column), but using TableItem#setText(int, String) sets the text in column i (which is only equal to 0 for one of your items).

您只有一列（因为您没有自己创建，表假定只有一列），但使用TableItem＃setText（int，String）设置列i中的文本（对于一列只能等于0）你的物品）。

So, if you've just got one column, use this:

所以，如果您只有一列，请使用：

item.setText(demo.get(j));

要么

item.setText(0, demo.get(j));

If you've got more colums, create them before adding items (new TableColumn(table, SWT.NONE)), then add your items using:

如果你有更多的colums，请在添加项目之前创建它们（new TableColumn（table，SWT.NONE）），然后使用以下命令添加项目：

for(int i = 0; i < items.size(); i++)
{
    TableItem item = new TableItem(table, SWT.NONE);

    for(int j = 0; j < table.getColumnCount(); j++)
    {
        item.setText(j, "something here");
    }
}

Then afterwards you have to pack() the columns:

然后你必须打包（）列：

for(TableColumn col : table.getColumns())
{
    col.pack();
}

#1