프레임 업데이트 또는 패널 다시 확인/다시 칠

Question

변경된 내용으로 Java 프레임을 업데이트하는 방법은 무엇입니까?

업데이트 된 내용으로 프레임 또는 패널 만 업데이트하려고합니다. 무엇을이 용도로 사용합니까?

여기 프레임을 다시 확인하거나 주 패널이나 다른 무엇이 작동하는지 다시 채우려는 곳입니다. 많은 것들을 시도했지만 그 중 아무 것도 작동하지 않았습니다.

public void actionPerformed(ActionEvent e) { 
     //System.out.println(e.getActionCommand()); 
     if (e.getActionCommand().equals("advance")) { 
      multi--; 
        // Revalidate update repaint here <<<<<<<<<<<<<<<<<<< 
     } 
     else if (e.getActionCommand().equals("reverse")) { 
      multi++; 
        // Revalidate update repaint here <<<<<<<<<<<<<<<<<<<  
     } 
     else { 
      openURL(e.getActionCommand()); 
     } 

     } 

다음은 전체 자바 파일

/* 
* 
* 
*/ 

package build; 

import java.lang.reflect.Method; 
import javax.swing.JOptionPane; 
import java.util.Arrays; 
import java.util.*; 
import java.util.ArrayList; 

import javax.swing.*; 
import javax.swing.AbstractButton; 
import javax.swing.JScrollPane; 
import javax.swing.JButton; 
import javax.swing.JPanel; 
import javax.swing.JFrame; 
import javax.swing.ImageIcon; 

import java.awt.*; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.event.KeyEvent; 

/* 
* ButtonDemo.java requires the following files: 
* images/right.gif 
* images/middle.gif 
* images/left.gif 
*/ 
public class StockTable extends JPanel 
         implements ActionListener { 
    static int multi = 1; 
    int roll = 0; 
    static TextVars textvars = new TextVars(); 
    static final String[] browsers = { "firefox", "opera", "konqueror", "epiphany", 
      "seamonkey", "galeon", "kazehakase", "mozilla", "netscape" }; 
    JFrame frame; 
    JPanel mainpanel, panel1, panel2, panel3, panel4, panel2left, panel2center, panel2right; 
     JButton stknames_btn[] = new JButton[textvars.getNumberOfStocks()]; 
    JLabel label[] = new JLabel[textvars.getNumberOfStocks()]; 
    JLabel headlabel, dayspan, namelabel; 
    JRadioButton radioButton; 
    JButton button; 
    JScrollPane scrollpane; 
    int wid = 825; 
    public JPanel createContentPane() { 

     mainpanel = new JPanel(); 
     mainpanel.setPreferredSize(new Dimension(wid, 800)); 
     mainpanel.setLayout(new GridBagLayout()); 
     GridBagConstraints c = new GridBagConstraints(); 
     panel1 = new JPanel(); 
     panel1.setPreferredSize(new Dimension(wid, 25)); 
     c.gridx = 0; 
     c.gridy = 0; 
     c.insets = new Insets(0,0,0,0); 
     mainpanel.add(panel1, c); 

     // Panel 2------------ 
     panel2 = new JPanel(); 
     panel2.setPreferredSize(new Dimension(wid, 51)); 
     c.gridx = 0; 
     c.gridy = 1; 
     c.insets = new Insets(0,0,0,0); 
     mainpanel.add(panel2, c); 
     panel2left = new JPanel(); 
     panel2left.setPreferredSize(new Dimension(270, 51)); 
     c.gridx = 0; 
     c.gridy = 1; 
     c.insets = new Insets(0,0,0,0); 
     panel2.add(panel2left, c); 
     panel2center = new JPanel(); 
     panel2center.setPreferredSize(new Dimension(258, 51)); 
     c.gridx = 1; 
     c.gridy = 1; 
     c.insets = new Insets(0,0,0,0); 
     panel2.add(panel2center, c); 
     panel2right = new JPanel(); 
     panel2right.setPreferredSize(new Dimension(270, 51)); 
     c.gridx = 2; 
     c.gridy = 1; 
     c.insets = new Insets(0,0,0,0); 
     panel2.add(panel2right, c); 
     // ------------------ 

     panel3 = new JPanel(); 
     panel3.setLayout(new GridBagLayout()); 
     scrollpane = new JScrollPane(panel3); 
     scrollpane.setPreferredSize(new Dimension(wid, 675)); 
     c.gridx = 0; 
     c.gridy = 2; 
     c.insets = new Insets(0,0,0,0); 
     mainpanel.add(scrollpane, c); 


      ImageIcon leftButtonIcon = createImageIcon("images/right.gif"); 

      //b1 = new JButton("Disable middle button", leftButtonIcon); 
      //b1.setVerticalTextPosition(AbstractButton.CENTER); 
      //b1.setHorizontalTextPosition(AbstractButton.LEADING); //aka LEFT, for left-to-right locales 
      //b1.setMnemonic(KeyEvent.VK_D); 
      //b1.setActionCommand("disable"); 


      //Listen for actions on buttons 1 
      //b1.addActionListener(this); 

      //b1.setToolTipText("Click this button to disable the middle button."); 

      //Add Components to this container, using the default FlowLayout. 
      //add(b1); 


     headlabel = new JLabel("hellorow1"); 
      c.gridx = 0;  
      c.gridy = 0;  
     c.insets = new Insets(0, 0, 0, 0); 
     panel1.add(headlabel, c); 

     radioButton = new JRadioButton("Percentage"); 
      c.gridx = 2;  
      c.gridy = 0;  
     c.insets = new Insets(0, 0, 0, 0); 
     panel1.add(radioButton, c); 

     radioButton = new JRadioButton("Days Range"); 
      c.gridx = 3;  
      c.gridy = 0;  
     c.insets = new Insets(0, 0, 0, 0); 
     panel1.add(radioButton, c); 

     radioButton = new JRadioButton("Open/Close"); 
      c.gridx = 4;  
      c.gridy = 0;  
     c.insets = new Insets(0, 0, 0,0); 
     panel1.add(radioButton, c); 


     button = new JButton("<<"); 
     button.setPreferredSize(new Dimension(50, 50)); 
     button.setActionCommand("reverse"); 
     button.addActionListener(this); 
      c.gridx = 0;  
      c.gridy = 1;  
     c.insets = new Insets(0, 0, 0, 0); 
      panel2left.add(button, c); 

     dayspan = new JLabel("hellorow2"); 
     dayspan.setHorizontalAlignment(JLabel.CENTER); 
     dayspan.setVerticalAlignment(JLabel.CENTER); 
     dayspan.setPreferredSize(new Dimension(270, 50)); 
      c.gridx = 1;  
      c.gridy = 1; 
     c.insets = new Insets(0, 0, 0, 0);  
      panel2center.add(dayspan, c); 

     button = new JButton(">>"); 
     button.setPreferredSize(new Dimension(50, 50)); 
     button.setActionCommand("advance"); 
     button.addActionListener(this); 
     if (multi == 0) { 
      button.setEnabled(false); 
     } 
     else { 
      button.setEnabled(true); 
     } 
      c.gridx = 2;  
      c.gridy = 1;  
     c.insets = new Insets(0, 0, 0, 0); 
      panel2right.add(button, c); 

     int availSpace_int = textvars.getStocks().size()-textvars.getNumberOfStocks()*7; 

     ArrayList<String[]> stocknames = textvars.getStockNames(); 
     ArrayList<String[]> stocks = textvars.getStocks(); 
     for (int column = 0; column < 8; column++) { 
      for (int row = 0; row < textvars.getNumberOfStocks(); row++) { 

       if (column==0) { 
        if (row==0) { 
         namelabel = new JLabel(stocknames.get(0)[0]); 
         namelabel.setVerticalAlignment(JLabel.CENTER); 
         namelabel.setHorizontalAlignment(JLabel.CENTER); 
         namelabel.setPreferredSize(new Dimension(100, 25)); 
         c.gridx = column; 
         c.gridy = row; 
         c.insets = new Insets(0, 0, 0, 0); 
         panel3.add(namelabel, c); 
        } 
        else { 
         stknames_btn[row] = new JButton(stocknames.get(row)[0], leftButtonIcon); 
         stknames_btn[row].setVerticalTextPosition(AbstractButton.CENTER); 
         stknames_btn[row].setActionCommand(stocknames.get(row)[1]); 
         stknames_btn[row].addActionListener(this); 
         stknames_btn[row].setToolTipText("go to Google Finance "+stocknames.get(row)[0]); 
         stknames_btn[row].setPreferredSize(new Dimension(100, 25)); 
         c.gridx = column; 
         c.gridy = row; 
         c.insets = new Insets(0, 0, 0, 0); 
         //scrollpane.add(stknames[row], c); 
         panel3.add(stknames_btn[row], c); 
        } 
       } 
       else { 
         label[row]= new JLabel(textvars.getStocks().get(columnMulti(multi))[1]); 
         label[row].setBorder(BorderFactory.createLineBorder(Color.black)); 
         label[row].setVerticalAlignment(JLabel.CENTER); 
         label[row].setHorizontalAlignment(JLabel.CENTER); 
         label[row].setPreferredSize(new Dimension(100, 25));  
         c.gridx = column; 
         c.gridy = row; 
         c.insets = new Insets(0,0,0,0); 
         panel3.add(label[row], c); 
       } 

      } 
     } 

     return mainpanel; 
     } 

     public void actionPerformed(ActionEvent e) { 
     //System.out.println(e.getActionCommand()); 
     if (e.getActionCommand().equals("advance")) { 
      multi--; 
     } 
     else if (e.getActionCommand().equals("reverse")) { 
      multi++;   
     } 
     else { 
      openURL(e.getActionCommand()); 
     } 

     } 

     /** Returns an ImageIcon, or null if the path was invalid. */ 
     protected static ImageIcon createImageIcon(String path) { 
      java.net.URL imgURL = StockTable.class.getResource(path); 
      if (imgURL != null) { 
        return new ImageIcon(imgURL); 
      } else { 
        System.err.println("Couldn't find file: " + path); 
        return null; 
      } 
     } 

    public static void openURL(String url) { 
     String osName = System.getProperty("os.name"); 
     try { 
      if (osName.startsWith("Mac OS")) { 
       Class<?> fileMgr = Class.forName("com.apple.eio.FileManager"); 
       Method openURL = fileMgr.getDeclaredMethod("openURL", 
        new Class[] {String.class}); 
       openURL.invoke(null, new Object[] {url}); 
         } 
      else if (osName.startsWith("Windows")) {  
       Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + url); 
      } 
      else { //assume Unix or Linux 
       boolean found = false; 
       for (String browser : browsers) 
        if (!found) { 
         found = Runtime.getRuntime().exec(
         new String[] {"which", browser}).waitFor() == 0; 
         if (found) 
          Runtime.getRuntime().exec(new String[] {browser, url}); 
        } 
        if (!found) 
         throw new Exception(Arrays.toString(browsers)); 
        } 
       } 
     catch (Exception e) { 
      JOptionPane.showMessageDialog(null, 
       "Error attempting to launch web browser\n" + e.toString()); 
     } 
    } 
    int reit = 0; 
    int start = textvars.getStocks().size()-((textvars.getNumberOfStocks()*5)*7)-1; 
    public int columnMulti(int multi) { 
     reit++; 
     start++; 
     if (reit == textvars.getNumberOfStocks()) { 
      reit = 0; 
      start=start+64; 
     } 
     //start = start - (multi*(textvars.getNumberOfStocks())); 
     return start; 
    } 

     /** 
     * Create the GUI and show it. For thread safety, 
     * this method should be invoked from the 
     * event-dispatching thread. 
     */ 
     private static void createAndShowGUI() { 

     //Create and set up the window. 
      JFrame frame = new JFrame("Stock Table"); 
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

      //Create and set up the content pane. 
      StockTable newContentPane = new StockTable(); 
      //newContentPane.setOpaque(true); //content panes must be opaque 
      //frame.setContentPane(newContentPane); 
     frame.setContentPane(newContentPane.createContentPane()); 
     frame.setSize(800, 800); 


      //Display the window. 
      frame.pack(); 
      frame.setVisible(true); 


     } 

    public static void main(String[] args) { 
      //Schedule a job for the event-dispatching thread: 
      //creating and showing this application's GUI. 
      javax.swing.SwingUtilities.invokeLater(new Runnable() { 
        public void run() { 
         createAndShowGUI(); 
        } 
      }); 
     } 
} 

Answer 1

자신이 경종을 인상해야한다, 작은 변화를 기반으로 UI를 "다시 작성"하고 싶은 찾을 순간이다. 이것이 좋은 아이디어가 될 상황이 있지만, 대부분의 경우 나쁜 설계의 징조입니다.

의가 시작하자 ...

frame.setContentPane(newContentPane.createContentPane()); 

이 나쁜 생각입니다. 다른 JPanel을 만들려면 JPanel을 만들면됩니다. 갑자기 UI에 컨텍스트가 손실되지 않았습니다. 대신 createContentPane의

, 간단한 구조 당신은 StockTable 창의 생성자에서 UI와 같은 ... 더 프레임에 그 추가 ...

frame.setContentPane(newContentPane); 

이 mainPanel 없애과 StockTable 패널을 사용하여 직접.

코드를 실행할 수는 없지만 테이블 레이아웃을 "에뮬레이트"하는 것처럼 보입니다. 대신 생활을 단순화하고 JTable을 사용하는 법을 배우십시오. 테이블을 업데이트하는 것이 훨씬 쉬워집니다. (더보기 좋게) ...

Answer 2

swing component을 항상 업데이트하려면 이벤트 디스패처 스레드를 사용하십시오.

나는이 일이 당신에게 도움이 생각

public void actionPerformed(ActionEvent e) { 
     //System.out.println(e.getActionCommand()); 
     if (e.getActionCommand().equals("advance")) { 
      multi--; 

        Runnable edt = new Runnable() { 
        public void run() { 
         /*Update your components here*/ 
         } 
        }; 

      SwingUtilities.invokeLater(edt); 
      } 
     else if (e.getActionCommand().equals("reverse")) { 
      multi++; 
      Runnable edt= new Runnable() { 
        public void run() { 
         /*Update your components here*/ 
        } 
       }; 

       SwingUtilities.invokeLater(edt); 
     } 
     else { 
      openURL(e.getActionCommand()); 
     } 

     } 
    }