토글 버튼 전환

Question

토글 버튼에 대한 기본적인 질문이 있습니다. 다음 코드는 원하는 결과를 생성하지만 불리언 값이 반대로 보입니다. 코드가 프로그래밍 방식으로 올바 릅니까? 당신이 당신의 JRadioBuitton 년대에 어떤 actionCommand을 설정하지도

public class ToggleButton extends javax.swing.JFrame { 

    public ToggleButton() { 
     initComponents(); 
    } 

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

     one = new javax.swing.JRadioButton(); 
     all = new javax.swing.JRadioButton(); 

     setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); 

     one.setText("one channel"); 
     one.addActionListener(new java.awt.event.ActionListener() { 
      public void actionPerformed(java.awt.event.ActionEvent evt) { 
       oneActionPerformed(evt); 
      } 
     }); 

     all.setText("all channel"); 
     all.addActionListener(new java.awt.event.ActionListener() { 
      public void actionPerformed(java.awt.event.ActionEvent evt) { 
       allActionPerformed(evt); 
      } 
     }); 

     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(33, 33, 33) 
       .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
        .addComponent(all) 
        .addComponent(one)) 
       .addContainerGap(122, Short.MAX_VALUE)) 
     ); 
     layout.setVerticalGroup(
      layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) 
      .addGroup(layout.createSequentialGroup() 
       .addGap(30, 30, 30) 
       .addComponent(one) 
       .addGap(18, 18, 18) 
       .addComponent(all) 
       .addContainerGap(29, Short.MAX_VALUE)) 
     ); 

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

    private void allActionPerformed(java.awt.event.ActionEvent evt) {          
     if("all".equals(evt.getActionCommand())){ 
       all.setSelected(false); 
       one.setSelected(true); 
      }else { 
       one.setSelected(false); 
       all.setSelected(true); 
      }    
    }         

    private void oneActionPerformed(java.awt.event.ActionEvent evt) {          

     if("one".equals(evt.getActionCommand())){ 
       one.setSelected(false); 
       all.setSelected(true); 
      }else{ 
      all.setSelected(false); 
      one.setSelected(true); 
     } 
    }         

    public static void main(String args[]) { 

     //<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(ToggleButton.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (InstantiationException ex) { 
      java.util.logging.Logger.getLogger(ToggleButton.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (IllegalAccessException ex) { 
      java.util.logging.Logger.getLogger(ToggleButton.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } catch (javax.swing.UnsupportedLookAndFeelException ex) { 
      java.util.logging.Logger.getLogger(ToggleButton.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); 
     } 
     //</editor-fold> 

     java.awt.EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       new ToggleButton().setVisible(true); 
      } 
     }); 
    } 
    // Variables declaration - do not modify 
    private javax.swing.JRadioButton all; 
    private javax.swing.JRadioButton one; 
    // End of variables declaration 
} 

Answer 1

귀하의 테스트 if("all".equals(evt.getActionCommand())) 및 if("one".equals(evt.getActionCommand())) 항상 false 있습니다. 자, UI가 이미 그렇게하는 동안 라디오 버튼의 값을 설정하려고하는 이유를 모르겠습니다. 버튼의 상태를 다시 설명하지 않아도됩니다.

ButtonGroup (해당 그룹에 JRadioButton)을 추가하면 하나의 JRadioButton을 선택하면 다른 하나가 자동으로 선택 취소됩니다.