VerticalFieldManager resets the scroll on focus

I expanded a VerticalFieldManager to manage the scroling and it works well.

But I have a problem OnFocus

    protected void onFocus(int direction)
    {
        super.onFocus(direction);
        setVerticalScroll(scrollPosition);
    }

When the manager gets the focus sets the vertical slider to 0.

I checked the value in my method and it is correct.

How to get around this behavior?

Thank you very much.

try to wrap your call in an invokelater

Tags: BlackBerry Developers

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reset the scroll bar

I have a UIScrollBar component that is assigned to a textfield that can have its content changes frequently. When the content is higher at the height of the textfield object, the scroll bar works as expected and shows his handful of scrolling. When the selected content matches up to the textfield object, the scroll bar works as expected and does not show its handle to scrolling. But when set in this state of scroll handle, he will not return to show the handle when there is news that it would require.
I don't know what the problem is. Is there a way to reset the scroll bar each time?
Here's some related code - although it really doesn't make much difference. The ScrollBar and textfield are already on the scene, and the scroll bar is just work automatically. I added this line to the end, in an attempt to reset it, but get an error:
glossary.scroller.Redraw ();
package mvc.view
{
import flash.display. *;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.TextFormat;
import flash.events.MouseEvent;
import flash.events. *;
import flash.net.URLRequest;
Import fl.controls.ScrollBar;
Import fl.controls.UIScrollBar;
/ final public class Content_GLOSSARY extends Sprite
{
private var app: *;
private var: data table;
private var imageLoader:Loader;
private var glossary: glossary;
private var thislocalX:Number;
private var thislocalY:Number;
private var thisstageX:Number;
private var thisstageY:Number;
private var thisCharIndex:int;
private var thisleftcharnumber:Number;
GLOSSARY CONTENT.
public void Content_GLOSSARY (appObject:Object, contentData:Array)
{
App = appObject;
data = contentData;
placeContent();
setGlossary();
}
// PLACE TEXT ///////////////////////////////////////////
public void placeContent()
{
title.text = data [0];
title.x = Number (data [1]);
title.y = Number (data [2]);
title. Height = Number (data [3]);
title. Width = Number (data [4]);
title. Multiline = title.wordWrap = app.model.booleanConvestion (data [5]);
}
// SET GLOSSARY ////////////////////////////////////////
private void setGlossary()
{
Glossary = new Glossary();
glossary.x = 450;
glossary.y = 0;
addChild (glossary);
in the glossary. Alpha_Choice.addEventListener (MouseEvent.CLICK, alphaSelect);
display the default terms ('A')
glossary.glossaryTextField.htmlText = app.model.glossaryArray [0];
}
// ALPHA SELECT ////////////////////////////////////////////////////////
private void alphaSelect(event:MouseEvent):void
{
var thisletter:String;
thislocalX = event.localX;
thislocalY = event.localY;
thisstageX = event.stageX;
thisstageY = event.stageY;
thisCharIndex = glossary. Alpha_Choice.getCharIndexAtPoint (thislocalX, thislocalY);
thisleftcharnumber = thisCharIndex;
If (thisleftcharnumber == - 1).
{
return;
}
var myrectleft:Rectangle is glossary. Alpha_Choice.getCharBoundaries (thisleftcharnumber);
in the glossary. ActiveLetterMC_Instance.x is myrectleft.x + glossary. Alpha_Choice.x;
in the glossary. ActiveLetterMC_Instance.width = myrectleft.width - 6;
If (thisCharIndex == - 1).
{
return;
}
thisletter = glossary. Alpha_Choice.text.charAt (thisCharIndex);
displayTheSelectedTerms (thisletter);
}
// DISPLAY TERMS ////////////////////////////////////////////////////////////
private void displayTheSelectedTerms (thisletter): void
{
If (thisletter is 'A')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [0];
}
If (thisletter is 'B')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [1];
}
If (thisletter is 'C')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [2];
}
If (thisletter is "D")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [3];
}
If (thisletter is 'E')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [4];
}
If (thisletter is 'F')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [5];
}
If (thisletter is 'G')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [6];
}
If (thisletter is 'H')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [7];
}
If (thisletter is 'I')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [8];
}
If (thisletter is 'J')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [9];
}
If (thisletter is 'K')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [10];
}
If (thisletter is 'L')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [11];
}
If (thisletter is "M")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [12];
}
If (thisletter is "N")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [13];
}
If (thisletter is "O")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [14];
}
If (thisletter is 'P')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [15];
}
If (thisletter is 'Q')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [16];
}
If (thisletter is 'R')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [17];
}
If (thisletter is "S")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [18];
}
If (thisletter is "T")
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [19];
}
If (thisletter is 'U')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [20];
}
If (thisletter is 'V')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [21];
}
If (thisletter is 'W')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [22];
}
If (thisletter is 'X')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [23];
}
If (thisletter == 'Y')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [24];
}
If (thisletter is 'Z')
{
glossary.glossaryTextField.htmlText = app.model.glossaryArray [25];
}
redraw
glossary.scroller.Redraw ();
}
}
}

Have you tried to use the scroll bar update() method after changing the text?

How to make all the widget lost focus on any scrolling event?

Problem: my button tooltips are dragged himself upwards and downwards and reworked on the screen when the screen scrolls. There is a listener of scrollevent screen that should fire when the scroll event is happening, but it's not.

Inside of my listeners to focus and scroll I have code that hides the displayed all ToolTips are off widgets development.

So, why my scrolllistener is not shot? It fires up when I do scroll by dragging the screen upward if my thumb is on a widge who accepts the update, but not when the affected widget can't receive the focus. I partially fixed this by adding a mask manufacturers field for mae them focusable - but this seems to be a bug, is there a better way?

Here's my interlocutor of the screen:

this.setScrollListener (new ScrollChangeListener() {}
' Public Sub scrollChanged (Manager, int newHorizontalScroll,
{int newVerticalScroll)
setFocus();
getActiveToolTips () .removeAllElements ();
ToolTipMainScreen.this.invalidate ();
}
});

Thank you

PS: I use eclipse 3.5.2 last plugin, java last Windows XP pro 32 bit, JDE 4.7. Pack 5 SIM, sim 9530 and real device 9550.

Screen can be like that. It has a hierarchy of managers, and I never know who is involved in this operation. I can only imagine scrolling listener must be set on the manager returned by getMainManager(), but I'm not sure.

To be completely safe, you can:

1. create your screen with the explicit NO_VERTICAL_SCROLL indicator.

2. Add your VerticalFieldManager(VERTICAL_SCROLL |) VERTICAL_SCROLLBAR) directly on the screen.

3. Add the rest of your fields to this VerticalFieldManager. You can still use setBanner, setTitle, and setStatus for their intended uses, but never add anything directly on the screen.

4. set all your custom goodies VerticalFieldManager - ScrollChangeListener, paint the background, custom, etc.

This way control you as much as you can and don't count on the potentially changing nature of the screen.

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));

}

}

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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.

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I hope this is the information you're looking for.

Thanks for your time.

See you soon,.

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Welcome to the HP Forums!

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"Please click the Thumbs up icon below to thank me for having responded."

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VerticalFieldManager resets the scroll on focus

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