黑莓Storm 9530的跟蹤觸摸事件，而滾動

Question

哎在我的屏幕是有一個編輯框和2個自定義鍵字段爲「確定」和「取消」 下面ButtonField字段有一些更focussable標籤字段

當我在編輯區域寫一個名字，然後按回車鍵，然後焦點到達「OK」按鈕，但是如何將焦點設置在「取消​​」按鈕上。

而且滾動時，焦點不會自動向前移動???

做什麼可能是單讀音混淆觸摸事件及其處理！

請幫助!!!!!!!!!!!!

代碼：

 txt_Name = new EditField(TextField.NO_NEWLINE) 
      { 
       public void paint(net.rim.device.api.ui.Graphics g) 
       { 
        g.setColor(Color.MAROON); 
        super.paint(g); 
       } 
      }; 

      txt_Name.setFont(font); 

    v1 = new VerticalFieldManager(); 
    v1.add(txt_Name); 


    ButtonField btn1 = new ButtonField("OK",ButtonField.CONSUME_CLICK); 
    ButtonField btn2 = new ButtonField("CANCEL",ButtonField.CONSUME_CLICK); 

    v2 = new VerticalFieldManager(); 
    v2.add(btn1); 
    v2.add(btn2); 

    LabelField l1 = new LabelField("Hello Moon ",Field.Focussable); 
    LabelField l2 = new LabelField("Hello Citizen",Field.Focussable); 
    LabelField l3 = new LabelField("Hello People",Field.Focussable); 
    LabelField l4 = new LabelField("Hello world",Field.Focussable); 

    v3 = new VerticalFieldManager(); 
    v3.add(l1); 
    v3.add(l2); 
    v3.add(l3); 
    v3.add(l4); 

    add(v1); 
    add(v2); 
    add(v3); 
} 


protected boolean navigationClick(int status, int time) 
    { 
    if(OK.isFocus()) 
      { 
       //execute some code 
       return true; 
      } 
if(CANCEL.isFocus()) 
      { 
       //execute some code 
       return true; 
      } 
     } 

Answer 1

txt_Name = new EditField(TextField.NO_NEWLINE) 
      { 
       public void paint(net.rim.device.api.ui.Graphics g) 
       { 
        g.setColor(Color.MAROON); 
        super.paint(g); 
       } 
      }; 

      txt_Name.setFont(font); 

    v1 = new VerticalFieldManager(); 
    v1.add(txt_Name); 


    ButtonField btn1 = new ButtonField("OK",ButtonField.CONSUME_CLICK); 
    ButtonField btn2 = new ButtonField("CANCEL",ButtonField.CONSUME_CLICK); 

    h2 = new HorizontalalFieldManager(); 
    h2.add(btn1); 
    h2.add(btn2); 

    LabelField l1 = new LabelField("Hello Moon ",Field.Focussable); 
    LabelField l2 = new LabelField("Hello Citizen",Field.Focussable); 
    LabelField l3 = new LabelField("Hello People",Field.Focussable); 
    LabelField l4 = new LabelField("Hello world",Field.Focussable); 

    v3 = new VerticalFieldManager(); 
    v3.add(l1); 
    v3.add(l2); 
    v3.add(l3); 
    v3.add(l4); 

    add(v1); 
    add(h2); 
    add(v3); 
} 


protected boolean navigationClick(int status, int time) 
    { 
int index = h2.getFieldwithFocusIndex(); 
    if(h2==0) 
      { 
       //execute some code for OK 
       return true; 
      } 
if(h2==1) 
      { 
       //execute some code for cancel 
       return true; 
      } 
     } 

Answer 2

可以通過覆蓋含有可聚焦領域，如好屏幕或管理者的「navigationMovement」方法控制聚焦順序和取消按鈕。只需評估傳入該方法的參數，使用Field.setFocus（）將焦點設置爲所需的字段並返回true。

至於重點不是滾動向前發展 - 這只是方式的觸摸屏用戶界面的作品。只有當您觸摸可對焦區域時，焦點纔會移動 - 因此，如果在「輕彈」滾動屏幕時未觸及任何可對焦區域，焦點不會改變。

Answer 3

我做就像馬克的建議，爲每個按鈕單獨FieldChangeListeners：

class Scr extends MainScreen { 
    EditField txt_Name; 
    ButtonField btnOK; 
    ButtonField btnCancel; 
    VerticalFieldManager v1; 
    VerticalFieldManager v2; 
    VerticalFieldManager v3; 
    Font font = Font.getDefault().derive(Font.BOLD, 20); 

    public Scr() { 
     txt_Name = new EditField(TextField.NO_NEWLINE) { 
      public void paint(net.rim.device.api.ui.Graphics g) { 
       g.setColor(Color.MAROON); 
       super.paint(g); 
      } 
     }; 

     txt_Name.setFont(font); 

     v1 = new VerticalFieldManager(); 
     v1.add(txt_Name); 

     btnOK = new ButtonField("OK", ButtonField.CONSUME_CLICK); 
     btnOK.setChangeListener(
      new FieldChangeListener(){ 
       public void fieldChanged(Field field, int context) { 
      Dialog.inform("OK pressed"); 
     }}); 
     btnCancel = new ButtonField("Cancel", ButtonField.CONSUME_CLICK); 
     btnCancel.setChangeListener(
      new FieldChangeListener(){ 
       public void fieldChanged(Field field, int context) { 
      Dialog.inform("Cancel pressed"); 
     }}); 
     v2 = new VerticalFieldManager(); 
     v2.add(btnOK); 
     v2.add(btnCancel); 

     LabelField l1 = new LabelField("Hello Moon", Field.FOCUSABLE); 
     LabelField l2 = new LabelField("Hello Citizen", Field.FOCUSABLE); 
     LabelField l3 = new LabelField("Hello People", Field.FOCUSABLE); 
     LabelField l4 = new LabelField("Hello world", Field.FOCUSABLE); 

     v3 = new VerticalFieldManager(); 
     v3.add(l1); 
     v3.add(l2); 
     v3.add(l3); 
     v3.add(l4); 

     add(v1); 
     add(v2); 
     add(v3); 
    } 
} 

現在看來是確定：
alt text http://img40.imageshack.us/img40/6472/textentered.jpgalt text http://img59.imageshack.us/img59/7574/okpressed.jpgalt text http://img641.imageshack.us/img641/9246/cancelpressed01.jpg

UPDATE

姆斯瓦蒂我可以用Storm模擬器點擊這些按鈕。 我無法找到比模擬器中的鱈魚文件更老的任何其他解釋。您可以通過更改代碼中的任何標籤文本來快速檢查它，然後部署並檢查此更改是否將應用於設備上的應用程序。如果不是，這是舊版本，你應該再次清理模擬器並部署應用程序。
希望這會幫助你！
又見BlackBerry - Changes are not getting reflected in my app