Touch anywhere on the screen calls the ListField TouchEvent.DOWN

Hello

I suffer with small complex issue. In the screen of my application, I have the title bar with a labelfield and two custom buttons.

Below the titlefield I add a list field.

Now, I have a few complex features on the field from the list. When I click each line in the list, it should move to another screen I do using navigation, click medium. Now if I touch the rank in the list (for touch devices), it should move to another screen. And if I touch along the line of the list, it will display popup menu (custom, not by default) with option of removal and details.

        mListItem = new ListField(length, ButtonField.CONSUME_CLICK)
        {
            long touchedAt = -1;
            long HOLD_TIME = 500;

         // The regular getFieldAtLocation returns wrong values in open
                    // spaces in
                    // complex managers, so we override it
//                  public int getFieldAtLocation(int x, int y) {
//                      XYRect rect = new XYRect();
//                      int index = getFieldCount() - 1;
//                      while (index >= 0) {
//                          getField(index).getExtent(rect);
//                          if (rect.contains(x, y))
//                              break;
//                          --index;
//                      }
//                      return index;
//                  }
            protected boolean navigationClick(int status, int time)
            {
                // Click related functionality
                return true;
            }

            protected boolean touchEvent(TouchEvent message)
            {
                if(message.getEvent() == TouchEvent.DOWN)
                {
                     if (getFieldAtLocation(message.getX(1), message.getY(1)) == -1)
                     {
                         Logger.out("AccountList", "Touch down: getField location");
                         return true; // kill the event
                     }
                     else
                     {
                         touchedAt = System.currentTimeMillis();
                         touchedonList = true;
                         Logger.out("AccountList", "Touch down: touched down  "+touchedonList);
                     }
                }
                else if(message.getEvent() == TouchEvent.UP )
                {

                       if(System.currentTimeMillis() - touchedAt < HOLD_TIME && touchedonList == true)
                       {
                           touchedAt = -1; // reset
                           // Single Touch and Move to another screen
                       }

                       else if(touchedonList == true)
                       {
                         // Showing Menu Popup
                       }
                }
                return true;
//              return super.touchEvent(message);  // Not using this as it will show the default pop up
            }

And here's my reminder list field:

public class ListCallBack implements ListFieldCallback
    {
        public void drawListRow(ListField listField, Graphics graphics, int index,
                int y, int width) {

            String strdomOrg = yyyyyyy;
            String text = xxxxxx;
            Font f = FONT_FAMILY_0_SF_AS_08;

            int h = f.getHeight();
//          int height = (listField.getRowHeight() - h)/2 ;
            int height = h/2 ;
            y += height;
            graphics.setFont(f);
            graphics.setColor(Color.BLACK);
            graphics.drawText(strdomOrg, 10, y, DrawStyle.ELLIPSIS, width);
            y = y + h;
            graphics.setFont(FONT_FAMILY_1_SF_AS_08);
            graphics.setColor(Color.BLACK);
            graphics.drawText(text, 10, y, DrawStyle.ELLIPSIS , width);

         // use the offset instead
            int offset = (listField.getRowHeight() ) >> 1;
            if (index != 0) {
                graphics.drawLine(0, y - offset , width, y - offset);
            }
        }

        public Object get(ListField listField, int index) {
            // TODO Auto-generated method stub
            return mAccounts[index];
        }

        public int getPreferredWidth(ListField listField) {
            // TODO Auto-generated method stub
            return screenWidth;
        }

        public int getPreferredHeight() {
            return getContentHeight();
        }

        public int indexOfList(ListField listField, String prefix, int start) {
            // TODO Auto-generated method stub
            return listField.getSelectedIndex();
        }

    }

Now the question is to come a different way:

1. whenever I touch the buttons in title field, he calls the listfield TouchEvent.DOWN. Then the click of a button does not work. Instead, by clicking on the title bar, it moves to another screen, which is the feature click list filed.

2. so I added the listfield at a value for money. :

m_vfmScreen = new VerticalFieldManager(VERTICAL_SCROLL | Manager.VERTICAL_SCROLLBAR)
        {

        protected boolean touchEvent(TouchEvent message) {
                int event = message.getEvent();
                if (event == TouchEvent.CLICK) {
                    if (getFieldAtLocation(message.getX(1), message.getY(1)) == -1)
                        return true; // kill the event
                    else {
                    }
                }
                return super.touchEvent(message);
            }

            // The regular getFieldAtLocation returns wrong values in open
            // spaces in
            // complex managers, so we override it
            public int getFieldAtLocation(int x, int y) {
                XYRect rect = new XYRect();
                int index = getFieldCount() - 1;
                while (index >= 0) {
                    getField(index).getExtent(rect);
                    if (rect.contains(x, y))
                        break;
                    --index;
                }
                return index;
            }
        };

While in the list key of field works. If I touch the buttons in the title bar, it does not. But if the keys become focus, this case they work.

So I am in dilemma, what exactly the problem. Can someone please help.

For me, there's a code unepxected in your touchEvent() - getFieldAtLocation(). If you want released supporess presses of field, I suggest you use code like this:

protected boolean touchEvent (TouchEvent message) {}

int x = message.getX (1);
int y = message.getY (1);
If (x < 0="" ||="" y=""> < 0="" ||="" x=""> getExtent () .width: y > getExtent () .height) {}
Outside the scope
Returns false;
}

Tags: BlackBerry Developers

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