检索在JDialog中输入的输入

时间:2010-04-12 07:19:16

标签: java user-interface modal-dialog jdialog

我扩展了JDialog以创建一个自定义对话框,用户必须填写一些字段: dialog http://www.freeimagehosting.net/uploads/3d4c15ed9a.jpg

我应该如何检索输入的数据?

我提出了一个有效的解决方案。它模仿JOptionPane,但由于涉及静态字段,我对它的看法看起来很难看......这大致是我的代码:

public class FObjectDialog extends JDialog implements ActionListener {
    private static String name;
    private static String text;
    private JTextField fName;
    private JTextArea fText;
    private JButton bAdd;
    private JButton bCancel;

    private FObjectDialog(Frame parentFrame) {
        super(parentFrame,"Add an object",true);
        // build the whole dialog
        buildNewObjectDialog(); 
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent ae) {
        if(ae.getSource()==bAdd){
            name=fName.getText();
            text=fText.getText();
        }
        else {
            name=null;
            text=null;
        }
        setVisible(false);
        dispose();
    }

    public static String[] showCreateDialog(Frame parentFrame){
        new FObjectDialog(parentFrame);
        String[] res={name,text};
        if((name==null)||(text==null))
            res=null;
        return res;
    }
}

正如我所说的那样,它运行正常,但我想这可能会引发严重的并发问题......

有更清洁的方法吗?如何在JOptionPane中完成?

2 个答案:

答案 0 :(得分:10)

如果我这样做,我总是这样工作:

FObjectDialog fod = new FObjectDialog(this);
fod.setLocationRelativeTo(this); // A model doesn't set its location automatically relative to its parent  
fod.setVisible(true);
// Now this code doesn't continue until the dialog is closed again.
// So the next code will be executed when it is closed and the data is filled in.
String name = fod.getName();
String text = fod.getText();
// getName() and getText() are just two simple getters (you still have to make) for the two fields their content
// So return textField.getText();

希望这有帮助!
PS:你的程序看起来很棒!

答案 1 :(得分:1)

如果您打算同时显示多个对话框,则会出现并发问题,否则会出现并发问题。但是,摆脱所有静态的东西会使设计更清洁,更安全,更容易测试。只需从调用代码控制对话框的创建和显示,您就不需要任何静态内容。