dimanche 17 mai 2015

Swing Oberfläche rekusiv updaten mit updateUi()

Posted on 06:58 by verona
Hallo zusammen,

ich habe eine Oberfläche, die sich beim ändern des Models rekursiv updatet. Dazu habe ich eine View mit der Funktion update()

Java Code:


    

  1. 

     
    

    2. 

  2. 

     
    

    3. 

  3. 

    [...]
    

    4. 

  4. 

     
    

    5. 

  5. 

    public void update ()
    

    6. 

  6. 

    {
    

    7. 

  7. 

    //Oberfläche updaten
    

    8. 

  8. 

    updateChilds (_mainpanel);
    

    9. 

  9. 

    }
    

    10. 

  10. 

     
    

    11. 

  11. 

    public void updateChilds (Component comp)
    

    12. 

  12. 

    {
    

    13. 

  13. 

     
    

    14. 

  14. 

    if (comp == null) return;
    

    15. 

  15. 

    if (comp instanceof Container)
    

    16. 

  16. 

    {
    

    17. 

  17. 

    Container con = (Container) comp;
    

    18. 

  18. 

    Component[] comps = con.getComponents();
    

    19. 

  19. 

    for (int i = 0; i<comps.length; i++)
    

    20. 

  20. 

    {
    

    21. 

  21. 

    Component c = comps[i];
    

    22. 

  22. 

    if (c instanceof JComponent) {
    

    23. 

  23. 


    24. 

  24. 

    jc.updateUI();
    

    25. 

  25. 

    }
    

    26. 

  26. 

    updateChilds(c);
    

    27. 

  27. 

    }
    

    28. 

  28. 

    return;
    

    29. 

  29. 

     
    

    30. 

  30. 

    }
    

    31. 










Dabei bekomme ich einen Fehler:






Code:



Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0

        at javax.swing.plaf.basic.BasicTabbedPaneUI.tabForCoordinate(BasicTabbedPaneUI.java:1506)

        at javax.swing.plaf.basic.BasicTabbedPaneUI.setRolloverTab(BasicTabbedPaneUI.java:575)

        at javax.swing.plaf.basic.BasicTabbedPaneUI.access$2000(BasicTabbedPaneUI.java:54)

        at javax.swing.plaf.basic.BasicTabbedPaneUI$Handler.mouseEntered(BasicTabbedPaneUI.java:3627)

        at java.awt.Component.processMouseEvent(Component.java:6534)

        at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)

        at java.awt.Component.processEvent(Component.java:6290)

        at java.awt.Container.processEvent(Container.java:2234)

        at java.awt.Component.dispatchEventImpl(Component.java:4881)

        at java.awt.Container.dispatchEventImpl(Container.java:2292)

        at java.awt.Component.dispatchEvent(Component.java:4703)

        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)

        at java.awt.LightweightDispatcher.retargetMouseEnterExit(Container.java:4686)

        at java.awt.LightweightDispatcher.trackMouseEnterExit(Container.java:4665)

        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4514)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)

        at java.awt.Container.dispatchEventImpl(Container.java:2278)

        at java.awt.Window.dispatchEventImpl(Window.java:2739)

        at java.awt.Component.dispatchEvent(Component.java:4703)

        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)

        at java.awt.EventQueue.access$400(EventQueue.java:97)

        at java.awt.EventQueue$3.run(EventQueue.java:697)

        at java.awt.EventQueue$3.run(EventQueue.java:691)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)

        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)

        at java.awt.EventQueue$4.run(EventQueue.java:719)

        at java.awt.EventQueue$4.run(EventQueue.java:717)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)

        at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)

        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)

        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)

        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)


Dann wollte ich debuggen, und mein Eclipse stürzt ab und der Bildschirm friert ein. Also hab ich die Updatefunktion mal herausgenommen und ein return rein mit einem Haltepunkt versehen:






Java Code:






    

  1. 

    public void update ()
    

    2. 

  2. 

    {
    

    3. 

  3. 

    //also hier passiert eigentlich nichts, trotzdem friert der Bildschirm ein, aber nur im Debugmodus
    

    4. 

  4. 

    return;
    

    5. 

  5. 

    }
    

    6. 










Hat jemand eine Idee, woran das liegen könnte ?



Vielen Dank !



SignIn





Swing Oberfläche rekusiv updaten mit updateUi()














Categories: 















0
commentaires:
        
















Enregistrer un commentaire




















        

      









Inscription à :
Publier les commentaires (Atom)