Question

我想先choose.setVisible(true)之后能够选择并在按下确定按钮后继续执行。以下代码显示了chooser和continues 没有等待。

   static class box extends JFrame {
        Checkbox cboxtps = new Checkbox("Grf1", false);
        Checkbox cboxrspt = new Checkbox("Grf2", false);
        JLabel lblQts = new JLabel("Please select graphs");
        JButton btn1 = new JButton("Go");

        public box(String str) {
            super(str);
            setLayout(new GridLayout(4, 1));
            add(lblQts);
            add(cboxtps);
            add(cboxrspt);
            add(btn1);
            btn1.addActionListener(new ActionListener() {

                public void actionPerformed(ActionEvent e)
                {
                    //Execute when button is pressed
                    System.out.println("You clicked the button");
                }
            });
        }
        }


    public static void main(String args[]) {
        box choose = new box("Select Graphs");
        choose.setSize(300, 150);
        choose.pack();
        choose.setVisible(true);


        List<File> filepaths = fileselect();
        list = Splitter(filepaths);
}

Answer 1

由于您在这里异步工作，您必须将choose.setVisible(true)之后的代码放入actionPerformed回调中，如下所示：

public void actionPerformed(ActionEvent e) 
{
    System.out.println("You clicked the button");
    List<File> filepaths = fileselect();
    list = Splitter(filepaths);
}

通常，在处理大量回调时，最好定义辅助函数以避免深度嵌套。

停止代码执行，直到按下按钮

1 个答案: