创建 java swing 相册

Question

我想创建一个 Java Swing 相册，但我找不到正确的方法。我认为应该是创建两个 ArrayList，一个用于存储照片对象，另一个用于存储按钮。

之后我应该找到一种方法将每个图像分配给按钮并将它们添加到面板中。

我的问题是：您认为这是正确的做法吗？如果是，您能给我一个提示吗？ （对于底部的最后一堂课）

这是我目前的代码：

主要：

import javax.swing.JFrame;

public class Main extends JFrame {
public static void main(String[] args) {
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
           new AlbumFrame();
        }
    });
  }
}

相册框：

import java.awt.BorderLayout;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class AlbumFrame extends JFrame {

    private JPanel MenuPanel;
    private JPanel PhotoPanel;

    public AlbumFrame(){
        super("JPhone");

        setLayout(new BorderLayout());

        PhotoPanel = new PhotoPanel();
        add(PhotoPanel,BorderLayout.CENTER);

        MenuPanel = new MenuPanel();
        add(MenuPanel,BorderLayout.SOUTH);

        setSize(480,800);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }       
}

菜单面板

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.filechooser.FileNameExtensionFilter;


public class MenuPanel extends JPanel implements ActionListener{

    private static final long serialVersionUID = 1L;
    private JButton backButton;
    private JButton homeButton;
    private JButton turnButton;
    private JButton addButton;

    final private JFileChooser fc;

    public MenuPanel(){

        fc = new JFileChooser();

        backButton = new JButton(new ImageIcon(getClass().getResource("/Images/back.png")));
        homeButton = new JButton(new ImageIcon(getClass().getResource("/Images/home.png")));
        turnButton = new JButton(new ImageIcon(getClass().getResource("/Images/turn.png")));
        addButton = new JButton(new ImageIcon(getClass().getResource("/Images/add.png")));

        backButton.setPreferredSize(new Dimension(55,55));
        homeButton.setPreferredSize(new Dimension(55,55));
        turnButton.setPreferredSize(new Dimension(55,55));
        addButton.setPreferredSize(new Dimension(55,55));

        backButton.addActionListener(this);
        homeButton.addActionListener(this);
        turnButton.addActionListener(this);
        addButton.addActionListener(this);

        setLayout(new FlowLayout(FlowLayout.CENTER));

        add(backButton);
        add(homeButton);
        add(turnButton);
        add(addButton);
    }

    public void actionPerformed(ActionEvent e) {
        JButton clicked = (JButton)e.getSource();

        //Test for the moment
        if(clicked == backButton){
            System.out.println("back");
        }else if(clicked == homeButton){
            System.out.println("home");
        }else if(clicked == turnButton){
            System.out.println("turn");
        }else if(clicked == addButton){
            int returnVal = fc.showOpenDialog(MenuPanel.this);
            if(returnVal == JFileChooser.APPROVE_OPTION){
                File file = fc.getSelectedFile();
            }
        }
    }
}

照片面板

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

import javax.swing.JButton;
import javax.swing.JPanel;

public class PhotoPanel extends JPanel implements ActionListener {

    ArrayList<Photo> Album = new ArrayList<Photo>();
    ArrayList<JButton> Buttons = new ArrayList<JButton>();

    public PhotoPanel(){

        setLayout(new FlowLayout(FlowLayout.CENTER));

    }

    public void actionPerformed(ActionEvent e) {

    }
}

Answer 1

我会使用像 PhotoCard 这样的单独类来避免列表：

class PhotoCard {
    public PhotoCard(Photo photo) {
        add(photo);
        // also add buttons, listeners, etc.
    }
}

保存必要的数据并初始化侦听器。 然后可以将课程添加到您的PhotoPanel：

PhotoPanel.add(new PhotoCard(...));