Java Development

[click-ma · Accepted solution]

Call setRowHeight method in your constructor.

[myraddin]

Sure,

Add these lines:

int rowht = listField.getFont().getHeight();
listField.setRowHeight((2 * (rowht))-8);

exactly after you instantiate the list field (right after the: listField = new ListField(); command)

 (and remove those same superfluous lines from the drawListRow() method, becuse they are not needed any more)

[amsiddh]

as you will have seen my ArticlesListField extends ObjectListField, so how do i go about doing wot u suggested as

int rowht = listField.getFont().getHeight();

 returns an error because of

public void drawListRow(ListField listField, Graphics graphics, int index, int y, int width)

[click-ma]

Try something like this

private class MyNiceListField extends ObjectListField 
{
    private int fontHeight = this.getFont().getHeight();
    private static final int UPPER_MARGIN = 1;
    private static final int INTERLINE = 1;
    
    private static final int NUM_OF_ROWS = 2;
    private static final int TEXT_MARGIN = 2;
    private int rowHeight = NUM_OF_ROWS*fontHeight + UPPER_MARGIN + INTERLINE;
   
    MyNiceListField()
    {
     	super();
      	setRowHeight(rowHeight);
    }
   
    // Take care of drawing the item.
    public void drawListRow(ListField listField, Graphics graphics, 
                            int index, int y, int width) 
    {
        int ypos = y + UPPER_MARGIN;
        int xpos = TEXT_MARGIN;
        String str1 = "line 1";
        
        String str2 = "line 2";

        /* First line:  */
        graphics.drawText(str1, xpos, ypos, DrawStyle.ELLIPSIS, width);
            
        /* Second line:   */
        ypos += fontHeight + INTERLINE;
        graphics.drawText(str2, xpos, ypos, DrawStyle.ELLIPSIS, width);
            
        }

} /* MyNiceListField  */

 HTH

[myraddin]

sorry. didn't notice the extended part (silly me).

click-ma showed the appraach in an extended listField class.

The point is not to set the row height every time the row get's drawn because that change will be applied to the next row (thus skipping the first one).

By putting  the setRowHeight(int aHeight) in the constructor you are sure that the call is done once per instatination and before any drawing being done.

So every row will have this aHeight set.

[amsiddh]

 public void setRowHeight(int rowHeight)
       {
            rowHeight = 30;
       };

 i wrote the setRowHeight method as above and called the method as below

private class ArticlesListField extends ObjectListField {
   
        private Bitmap backgroundBitmap = Bitmap.getBitmapResource("rowBckgrd_grey.png");
        private Bitmap focusBitmap = Bitmap.getBitmapResource("rowBckgrd_blue.png");
        private Bitmap icon = Bitmap.getBitmapResource("icon_coupon.png");   
        
        ArticlesListField()
        {
        super();
        setRowHeight(rowHeight);
      
        }

 But i get an error as follows:

cannot find symbol
symbol  : variable rowHeight
location: class RestaurantScreen.ArticlesListField
        setRowHeight(rowHeight);
                     ^

 Wots the issue??

  

[amsiddh]

finally got it working. hopefully no issues should further occur.

All i did with the constructor was:

ArticlesListField()
        {
        super();
        int rowHeight=30;
        setRowHeight(rowHeight);
      
        }