Question

我想将一个人/公司添加到一种车辆类型。关键是要在人或公司之间做出选择，然后继续输入有关它们的详细信息。然后继续选择它是什么类型的车辆，然后是更多细节。我不知道我要做什么，让程序正常工作，我希望有人可以帮助我。

private void addVehicle() {
    System.out.println("Add Vehicle");
    String[] options = {"Private person", "Firm"};
    String[] vehicle = {"Car", "Truck", "MC"};
    String[] personDetails = {"Firstname: ","Lastname: ","Date of Birth: ",
                              "Address: ","Phone Number: "};

    int chooseOwnerType = JOptionPane.showOptionDialog(this, "Private person/firm",
        "Choose an option", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, "");
    int chooseVehicleType = JOptionPane.showOptionDialog(this, "What kind of vehicle is it?",
        "Choose an option", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null, vehicle, "");
    int numPairs = personDetails.length; 

    if(chooseOwnerType == 0) {
        JPanel p = new JPanel(new SpringLayout());
        for (int i = 0; i < numPairs; i++) {
            JLabel l = new JLabel(personDetails[i], JLabel.TRAILING);
            p.add(l);
            JTextField textField = new JTextField(10);
            l.setLabelFor(textField);
            p.add(textField);
        }
    }

    if(chooseOwnerType == 1) {
    }

Answer 1

您需要为特定示例使用某些内容。首先，我建议您阅读如何使用SpringLayout，因为您需要指定＆＃34; Springs＆＃34;为了使文本框正确显示（请参阅：http://docs.oracle.com/javase/tutorial/uiswing/layout/spring.html）

＆＃34;显然，我们遇到了一些问题。框架不仅太小，而且即使调整大小，组件都位于（0,0）。发生这种情况是因为我们没有设置弹簧来指定组件＆＃39;位置和容器的宽度。一个小小的安慰是至少组件处于它们的首选大小 - 我们从SpringLayout为每个组件创建的默认弹簧中免费获得它。＆＃34;

就个人而言，我会使用带有两列的网格布局。因此，根据您的初始帖子，我进行了更改，并提出了以下代码。我强烈建议你阅读一些swing和java教程。

import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SpringLayout;

public class Test1 {

    public static void main(String args[]) {
        new Test1().addVehicle();
    }

    private void addVehicle() {
        System.out.println("Add Vehicle");
        String[] options = { "Private person", "Firm" };
        String[] vehicle = { "Car", "Truck", "MC" };
        String[] personDetails = { "Firstname: ", "Lastname: ",
                "Date of Birth: ", "Address: ", "Phone Number: " };

        int chooseOwnerType = JOptionPane.showOptionDialog(null,
                "Private person/firm", "Choose an option",
                JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null,
                options, "");
        int chooseVehicleType = JOptionPane.showOptionDialog(null,
                "What kind of vehicle is it?", "Choose and option",
                JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE, null,
                vehicle, "");
        int numPairs = personDetails.length;

        System.out.println("Owner Type:" + chooseOwnerType);
        System.out.println("Vehicle Type:" + chooseVehicleType);
        JPanel p = null;

        GridLayout gridLayout = new GridLayout(0,2);

            //Private Person
        if (chooseOwnerType == 0) {
            p = new JPanel(gridLayout);
            for (int i = 0; i < numPairs; i++) {
                JLabel l = new JLabel(personDetails[i], JLabel.TRAILING);
                p.add(l);
                JTextField textField = new JTextField(10);
                l.setLabelFor(textField);
                p.add(textField);
            }
        }

        if (chooseOwnerType == 1) {
        }

        if (p != null) {
            JFrame window = new JFrame("GUI Test");
            window.setContentPane(p);
            window.setSize(250, 100);
            window.setLocation(100, 100);
            window.setVisible(true);
            window.pack();
        }

    }

}

当用户为所有者选择第一个按钮时，在自定义生成的JFrame下方。 enter image description here

我正在尝试使用JOptionPane首先选择其人员或公司，然后继续输入

1 个答案: