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单击表格中单元格时如何更改该单元格的内容

windowbuilder swt eclipse java

NullPointerException · 技术社区 · 6 年前

我有一张关于javaswt的桌子。我有一个“付款”列,所有的项目都写了“非付款”和非付款图标。这是表格的第四列。

我找不到实现这一点的方法,因为我无法将选择侦听器添加到表的单元格中,或者我不知道如何做到这一点。

这是我的源代码:

Table membersTable = new Table(clubComposite, SWT.BORDER | SWT.CHECK | SWT.FULL_SELECTION);
membersTable.setLinesVisible(true);
membersTable.setHeaderVisible(true);
membersTable.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

TableColumn tblclmnName = new TableColumn(membersTable, SWT.NONE);
tblclmnName.setWidth(150);
tblclmnName.setText("Nombre");

TableColumn tblclmnCommonPhoneNumber = new TableColumn(membersTable, SWT.NONE);
tblclmnCommonPhoneNumber.setWidth(120);
tblclmnCommonPhoneNumber.setText("TelÃ©fono");

TableColumn tblclmnCommonMoney = new TableColumn(membersTable, SWT.NONE);
tblclmnCommonMoney.setWidth(150);
tblclmnCommonMoney.setText("ParticipaciÃ³n Habitual");

TableColumn tblclmnPayed = new TableColumn(membersTable, SWT.CENTER);
tblclmnPayed.setWidth(50);
tblclmnPayed.setText("Payed"); 

// populate Table
for (int i=0; i<50; i++) {
    TableItem tableItem = new TableItem(membersTable, SWT.CENTER);                  
    tableItem.setText(new String[] {"person "+i, "610610620", "100", "non payed"});
    tableItem.setImage(3, uncheckedImage);
}

编辑:

好吧,我试着用一个复选框来做,但是现在我怎么知道在哪一行单击了复选框呢?我需要它来得到第三列的值

// populate Table
    for (int i=0; i<50; i++) {
        TableItem tableItem = new TableItem(membersTable, SWT.NONE);                    
        tableItem.setText(new String[] {"person "+i, "610610620", "100"});

        Button button = new Button(membersTable, SWT.CHECK);
        button.pack();
        TableEditor editor = new TableEditor(membersTable);
        editor.minimumWidth = button.getSize().x;
        editor.horizontalAlignment = SWT.CENTER;
        editor.setEditor(button, tableItem, 3);

        button.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                //how to know in which row is clicked the checkbox?
            }
        });
    }

1 回复 | 直到 6 年前

avojak 6 年前

既然你在里面 for TableItem 表项 ,您也已经可以访问它了。

for (int i=0; i<50; i++) {
    TableItem tableItem = new TableItem(membersTable, SWT.NONE);                    
    tableItem.setText(new String[] {"person "+i, "610610620", "100"});

    Button button = new Button(membersTable, SWT.CHECK);
    button.pack();
    TableEditor editor = new TableEditor(membersTable);
    editor.minimumWidth = button.getSize().x;
    editor.horizontalAlignment = SWT.CENTER;
    editor.setEditor(button, tableItem, 3);

    final int index = i; // Hold the row index here

    button.addSelectionListener(new SelectionAdapter() {
        @Override
        public void widgetSelected(SelectionEvent e) {
            //how to know in which row is clicked the checkbox?
            System.out.println("Row selected: " + index);
            System.out.println("ParticipaciÃ³n Habitual: " + tableItem.getText(2));
        }
    });
}

如评论中所述,使用 index 如果删除一行,将不可靠。相反,你可以使用 Table.indexOf(TableItem) 如果你需要数字索引。

@Override
public void widgetSelected(SelectionEvent e) {
    //how to know in which row is clicked the checkbox?
    System.out.println("Row selected: " + membersTable.indexOf(tableItem));
    System.out.println("ParticipaciÃ³n Habitual: " + tableItem.getText(2));
}