java - 如何在 Scrollpane 中以多行排列组件

Question

我需要向滚动 Pane 添加大约 600 张图片，但所有图片都是并排排列的

public CollectionPanel(Controller controller)
  this.setBackground(Color.white);
  this.setLayout(new BorderLayout());
  JPanel content = new JPanel();
  content.setLayout(new FlowLayout());
  JScrollPane scrollPane = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
  for(int i = 0; i < 100; ++i){
    content.add(new Sticker(i+1)); 
  }
  scrollPane.setViewportView(content);
  this.add(scrollPane, BorderLayout.CENTER);
}

如何安排它们在到达屏幕末尾时“换行”？

Answer 1

看看 Rob Camick 的 WrapLayout .

您可以调整框架的大小，所有组件都会为您重新格式化。这是一个示例用法

import java.awt.*;
import javax.swing.*;

public class TestWrapLayout {
    public TestWrapLayout () {
        ImageIcon icon = new ImageIcon(getClass().getResource("/resources/stackoverflow2.png"));
        JPanel panel = new JPanel(new WrapLayout());
        for (int i = 1; i <= 250; i++) {
            JLabel iconlabel = new JLabel(icon);
            iconlabel.setLayout(new BorderLayout());
            JLabel textlabel = new JLabel(String.valueOf(i));
            textlabel.setHorizontalAlignment(JLabel.CENTER);
            textlabel.setForeground(Color.WHITE);
            textlabel.setFont(new Font("impact", Font.PLAIN,20));
            iconlabel.add(textlabel);
            panel.add(iconlabel);
        }
        JFrame frame = new JFrame();
        frame.add(new JScrollPane(panel));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 300);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable(){
            public void run() {
                new TestWrapLayout();
            }
        });
    }
}