java - 如何使用 SwingWorker 从无 gui 类更新 Java Jframe 控件

问题描述

我已经问过这个问题，但需要更多细节。

无法测试提出的答案，因为当 Windows 应用程序启动时，它看起来像大小 0,0，而当我最大化时，没有绘制控件。

无论如何，这是我原来的问题：

我想要做的（并寻找如何做）是 ListBox从实时的无 GUI 类中添加元素，或者换句话说“异步”，而不冻结我的应用程序。这清楚吗？我尝试 SwingWorker了线程，但没有结果。我所能做的就是在所有进程完成后更新列表框（显然我的应用程序冻结了，因为我的进程很长）。

这是我的架构：

项目

__控制器

__商业

__Util

__看法

这是我的代码（试图重现提出的解决方案）

视图（使用 NetBeans 生成）

package view;

import MyController;
import java.awt.event.ActionListener;
import javax.swing.DefaultListModel;
import javax.swing.JFrame;

public class MyView extends javax.swing.JFrame {

    static MyController controller;

    public MyView(DefaultListModel<String> model) {

        initComponents();
        pack();
        setVisible(true);
    }

    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        btnRun = new javax.swing.JButton();
        jscrlLog = new javax.swing.JScrollPane();
        jlstLog = new javax.swing.JList();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        btnRun.setText("Run");
        btnRun.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnRunActionPerformed(evt);
            }
        });

        jscrlLog.setViewportView(jlstLog);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(159, 159, 159)
                .addComponent(btnRun)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jscrlLog, javax.swing.GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(btnRun)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jscrlLog, javax.swing.GroupLayout.DEFAULT_SIZE, 242, Short.MAX_VALUE)
                .addContainerGap())
        );

        pack();
    }// </editor-fold>                        

    private void btnRunActionPerformed(java.awt.event.ActionEvent evt) {                                       
        controller.runProcess();
    }                                      

    public void addButtonListener(ActionListener listener) {
        btnRun.addActionListener(listener);
    }

    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(MyView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(MyView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(MyView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(MyView.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>
        //</editor-fold>
        //</editor-fold>
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                controller = new MyController();
            }
        });


    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton btnRun;
    private javax.swing.JList jlstLog;
    private javax.swing.JScrollPane jscrlLog;
    // End of variables declaration                   
}

商业

package business;

import MyLog;
import java.util.List;
import javax.swing.DefaultListModel;
import javax.swing.SwingWorker;

public class MyBusiness {

    private int counter = 0;
    private DefaultListModel<String> model;
    private MyLog log;

    public MyBusiness(DefaultListModel<String> model) {
        this.model = model;a
    }

    public void runProcess() {
        SwingWorker<Void, String> worker = new SwingWorker<Void, String>() {
            @Override
            protected Void doInBackground() throws Exception {
                for (int i = 0; i < 10; i++) {
                    publish("log message number " + counter++);
                    Thread.sleep(2000);
                }

                return null;
            }

            @Override
            protected void process(List<String> chunks) {
                // this is called on the Swing event thread
                for (String text : chunks) {
                    model.addElement("");
                }
            }
        };
        worker.execute();
    }

}

日志（模型）

package util;

import javax.swing.DefaultListModel;

public class MyLog {

    private DefaultListModel<String> model;

    public MyLog() {
        model = new DefaultListModel<String>();
    }

    public DefaultListModel<String> getLog(){
        return model;
    }

}

标签： javaswingasynchronousmodel-view-controllerjframe

java - 如何使用 SwingWorker 从无 gui 类更新 Java Jframe 控件

问题描述

解决方案

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