Question

我使用windowbuilder为我的应用程序构建GUI。我为我的GUI创建了一个基于SWT的shell布局。我在GUI中有一个文本框。我想在用作GUI时从文本框中获取Integer值。我看到文本框只有选项才能获取对象或文本。有没有从文本框中获取Integer的选项？如果是这样，我该怎么做？

我从windowbuilder的源码获得的代码如下：

import org.eclipse.swt.SWT;
import otf.EnterLeaveHandler;
public class test {

    protected Shell shell;
    private Text text;
    private final FormToolkit formToolkit = new FormToolkit(
            Display.getDefault());

    public static void main(String[] args) {
        try {
            test window = new test();
            window.open();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public void open() {
        Display display = Display.getDefault();
        createContents();
        shell.open();
        shell.layout();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch()) {
                display.sleep();
            }
        }
    }

    protected void createContents() {
        shell = new Shell();
        shell.setSize(545, 419);
        shell.setText("SWT Application");
        shell.setLayout(null);

        Button btnNewButton = new Button(shell, SWT.NONE);
        btnNewButton.setBounds(213, 243, 75, 25);
        btnNewButton.setText("Ok");

        Label lblNewLabel = new Label(shell, SWT.NONE);
        lblNewLabel.setBounds(190, 87, 137, 15);
        lblNewLabel.setText("Enter function name");

        text = new Text(shell, SWT.BORDER);
        text.setBounds(213, 129, 76, 21);


    final Label lblNewLabel_1 = formToolkit.createLabel(shell, "New Label", SWT.NONE);
    lblNewLabel_1.setBounds(72, 184, 55, 15);

    final EnterLeaveHandler ne = new EnterLeaveHandler();

    btnNewButton.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseDoubleClick(MouseEvent e) {

            Integer getvalue = Integer.parseInt(text.getText());
            ne.cpuid_filter(getvalue);

        }
    });
    }


 }

Answer 1

您必须从String：

解析它

try
{
    int actualValue = Integer.parseInt(text.getText());

    System.out.println(actualValue);
}
catch (NumberFormatException e)
{
    System.out.println("Not a number");
}

请注意，如果文本无法转换为整数，则可能会抛出NumberFormatException。

从windowbuilder中的文本框获取Integer

1 个答案: