Problem in the scroll bars when the screen is not any field focus...

Hi all

I have a screen on which I need to display a list of items. and the list total appears at the bottom of the list. everything works fine if the lily a few number of lines. but as soon as the number of rows and Lily exceeds the length of the screen, there is the problem. I don't see the total at the bottom because I can't scroll the list. Here is the code in my class. in the class list, I use a CustomGridManager, which shows data in a table (I downloaded it). I made a few changes in the present. the code for this handler is also attached. Please tell me what changes should I make, so that the screen can be the object of a scroll. (Please go through the code)...

SerializableAttribute public class MyClass extends {screen

public MyClass (dataList DataList []) {}

Super(Manager.VERTICAL_SCROLLBAR |) Manager.VERTICAL_SCROLL);

Super();

int noOfColumns = 2;

int noOfRows = dataList.length;

int [] columnWidth = {50.50};

CustomGridManager gfmHeader = new CustomGridManager (noOfColumns, 0, columnWidth);

Adding headers

LabelField lblHdrCol1 = new LabelField ("Col1");

gfmHeader.add (lblHdrCol1);

LabelField lblHdrCol2 = new LabelField ("Col2");

gfmHeader.add (lblHdrCol2);

VerticalFieldManager vfmTitle = new VerticalFieldManager();

vfmTitle.add (new LabelField ("my class"));

vfmTitle.add (gfmHeader);

setTitle (vfmTitle);

Addition of body

GFM CustomGridManager = new CustomGridManager (noOfColumns, 0, columnWidth);

for (int i = 0; i)< noofrows;="">

LabelField lblICol1 = new LabelField (dataList [i] .getCol1 ());

GFM. Add (lblICol1);

LabelField lblICol2 = new LabelField (dataList [i] .getCol2 ());

GFM. Add (lblICol2);

Adding a footer

CustomGridManager gfmFooter = new CustomGridManager (noOfColumns, 0, columnWidth);

LabelField lblFtrTotal = new LabelField ("Total");

gfmFooter.add (lblFtrTotal);

LabelField lblFtrValue = new LabelField ("CalculatedValue");

gfmFooter.add (lblFtrValue);

Add (gfmHeader);

Add (new SeparatorField());

Add (GFM);

Add (new SeparatorField());

Add (gfmFooter);

Add (new SeparatorField());

}

======================================================

SerializableAttribute public class CustomGridManager extends Manager {}

private int [] columnWidths;

private int [] staticColumnWidth;

private int columns;

private int allRowHeight = - 1;

/**

* Built a new CustomGridManager with the number of columns specified.

* Lines will be added to the need to display the fields.

* Fields will be added to the grid in the order they are added to this Manager.

to complete each row from left to right:

* For example, a Manager 2 column:

* [Field1] [Field2]

* [Field3] [Field4]

* [Sphere5]

* Column widths are equal, and the Manager will attempt to use the entire available width.

Each line height will be equal to the height of the field higher in the same row.

* Styles positional field are met, then the fields that are smaller than the row/column

* they can be set to left, right, up down, or centered. They have by default at the top left.

@param columns number of columns in the grid

@param style

public GridFieldManager (columns int, long style) {}

Super(Manager.VERTICAL_SCROLLBAR |) Manager.VERTICAL_SCROLL);

Super (style);

This.colonnes = columns;

}

/**

@param columns columns number of columns in the grid

@param style

@param columnWidths width of each column in a table

public GridFieldManager (columns int, long style, int [] columnWidths) {}

Super(Manager.VERTICAL_SCROLLBAR |) Manager.VERTICAL_SCROLL);

Super (style);

This.colonnes = columns;

this.staticColumnWidth = columnWidths;

}

protected boolean navigationMovement (int dx, int dy, int, int time status) {}

int focusIndex = getFieldWithFocusIndex();

While (dy > 0) {}

focusIndex += columns;

{If (focusIndex > = {getFieldCount())}

Returns false; The focus moves on this manager

}

else {}

Field f = getField (focusIndex);

If (f.isFocusable ()) {/ / only move the focus on the fields of the object of focus}

f.setFocus ();

-DY;

}

While (dy< 0)="">

focusIndex = columns;

If (focusIndex< 0)="">

Returns false;

}

else {}

Field f = getField (focusIndex);

If (f.isFocusable ()) {}

f.setFocus ();

DY ++;

}

While (dx > 0) {}

focusIndex ++;

{If (focusIndex > = {getFieldCount())}

Returns false;

}

else {}

Field f = getField (focusIndex);

If (f.isFocusable ()) {}

f.setFocus ();

-DX;

}

While (dx< 0)="">

-focusIndex;

If (focusIndex< 0)="">

Returns false;

}

else {}

Field f = getField (focusIndex);

If (f.isFocusable ()) {}

f.setFocus ();

DX ++;

}

Returns true;

}

protected void sublayout (int width, int height) {}

int y = 0;

columnWidths = new int [columns];

If (staticColumnWidth == null: staticColumnWidth.length)<= 0)="">

for (int i = 0; i)< columns;="" i++)="">

columnWidths [i] = width/columns;

}

} else {}

for (int i = 0; i)< columns;="" i++)="">

columnWidths [i] = (width * staticColumnWidth [i]) / 100;

}

On the field [] fields = Field [new columnWidths.length];

currentColumn int = 0;

rowHeight = 0 int;

for (int i = 0; i)< getfieldcount();="" i++)="">

fields [currentColumn] = getField (i);

layoutChild (fields [currentColumn], columnWidths [currentColumn], height-y);

If (fields [currentColumn] .getHeight () > rowHeight) {}

rowHeight = fields [currentColumn] .getHeight ();

}

currentColumn ++;

{If (currentColumn == columnWidths.length | I == {getFieldCount () - 1)}

int x = 0;

If (this.allRowHeight > = 0) {}

rowHeight = this.allRowHeight;

}

for (int c = 0; c)< currentcolumn;="" c++)="">

long fieldStyle is fields [c] .getStyle ();.

int fieldXOffset = 0;

long fieldHalign = fieldStyle & Field.FIELD_HALIGN_MASK;

If (fieldHalign == Field.FIELD_RIGHT) {}

fieldXOffset = columnWidths [c] - fields [c] .getWidth ();

}

Else if (fieldHalign == Field.FIELD_HCENTER) {}

fieldXOffset = (columnWidths [c] - fields [c] .getWidth ()) / 2;

}

int fieldYOffset = 0;

long fieldValign = fieldStyle & Field.FIELD_VALIGN_MASK;

If (fieldValign == Field.FIELD_BOTTOM) {}

fieldYOffset = rowHeight - fields [c] .getHeight ();

}

Else if (fieldValign == Field.FIELD_VCENTER) {}

fieldYOffset = (rowHeight-fields [c] .getHeight ()) / 2;

}

setPositionChild (fields [c], x + fieldXOffset, y + fieldYOffset);

x += columnWidths [c];

}

currentColumn = 0;

y += rowHeight.

}

If (y > = height) {}

break;

}

totalWidth int = 0;

for (int i = 0; i)< columnwidths.length;="" i++)="">

totalWidth += columnWidths [i];

}

setExtent (totalWidth, Math.min (y, height));

}

Do you really want now fields is active.

You can try adding a NullField after your Manager - a NullField is active, if it does not size.

Other than that, you can try the substitution of navigationMovement and Manager.setVerticalScroll to go up and down the window scrolling. I think it should work, although I never did. You can control the scope of the first Manager to ensure that you do not have to scroll through to the end.

Tags: BlackBerry Developers

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