Scrolling Question?

[garykang]

any solution for this...this is combobox compenent.

any solution?

[kglad]

you can reference the scrollbar using your cb's dropdown's verticalScrollBar property.

[AngryGamerProductions]

Try this: When a user puts their finger on the list to start scrolling, have a variable track where they put their finger down, and have a timer update the CB's scroll amount by how much they have moved their finger from the original area where they put it down.

An example of a code to go along with this is:

var start_finger_position:Number 
combo_box.addEventListener(MouseEvent.MOUSE_OVER, fl_hover);
function fl_hover(event:MouseEvent):void 
{
    start_finger_position = mouseY
}
//insert timer listener and function here
//timer code:
{
combo_box.verticalScrollbar.scroll = combo_box.verticalScrollbar.scroll + (mouseY - start_finger_position)
}

(The timer updates the scroll, so have an interval of about 10-50)

[garykang]

sorry, i was try my best... i cant understand this coding work...need your help.. may i get the full coding?

var textFormat:TextFormat = new TextFormat();

textFormat.font = "Trebuchet MS";

textFormat.size = 50;

combobox.textField.setStyle("textFormat", textFormat);

combobox.rowCount = 8;

combobox.dropdown.rowHeight = 55;

combobox.dropdown.setRendererStyle("textFormat", textFormat);

combobox.addItem( {label: "BKB1"} );

combobox.addItem( {label: "BKB2"} );

combobox.addItem( {label: "BKB3"} );

combobox.addItem( {label: "BKB4"} );

combobox.addItem( {label: "BKB5"} );

combobox.addItem( {label: "BKB6"} );

combobox.addItem( {label: "BKB7"} );

combobox.addItem( {label: "BKB8"} );

combobox.addItem( {label: "BKB9"} );

combobox.addItem( {label: "BKB10"} );

combobox.addEventListener(Event.CHANGE, changeimage);

function changeimage(event:Event):void{

          if (combobox.selectedItem.label=="BKB1")gotoAndStop(2);

          if (combobox.selectedItem.label=="BKB2")gotoAndStop(3);

          if (combobox.selectedItem.label=="BKB3")gotoAndStop(4);

          if (combobox.selectedItem.label=="BKB4")gotoAndStop(5);

          if (combobox.selectedItem.label=="BKB5")gotoAndStop(6);

          if (combobox.selectedItem.label=="BKB6")gotoAndStop(7);

          if (combobox.selectedItem.label=="BKB7")gotoAndStop(8);

          if (combobox.selectedItem.label=="BKB8")gotoAndStop(9);

          if (combobox.selectedItem.label=="BKB9")gotoAndStop(10);

          if (combobox.selectedItem.label=="BKB10")gotoAndStop(11);

}

this my combobox coding...

thanks

[kglad]

again, the combobox has no verticalScrollBar property.  use:

combobox.dropdown.verticalScrollBar as in

combobox.addEventListener(Event.OPEN,f);

function f(e:Event):void{

stage.invalidate();

this.addEventListener(Event.RENDER,ff);

}

function ff(e:Event):void{

combobox.dropdown.verticalScrollBar.visible = false;

}

[garykang]

this success hide vertical scroll bar.But i need use hand to scroll down without using vertical scroll bar.

Can help ? thanks a lot for help.

[kglad]

then use a mousedown listener to start a loop (like enterframe) that terminates on mouseup and repeatedly updates the combobox'es dropdown's verticalScrollPosition.

[garykang]

Need more help... can give example coding?

i was try use this coding but i cant coding it...

var start_finger_position:Number

combo_box.addEventListener(MouseEvent.MOUSE_OVER, fl_hover);

function fl_hover(event:MouseEvent):void

{

    start_finger_position = mouseY

}

//insert timer listener and function here

//timer code:

{

combo_box.verticalScrollbar.scroll = combo_box.verticalScrollbar.scroll + (mouseY - start_finger_position)

}

[kglad]

var m:Number;

var b:Number;

combo_box.addEventListener(MouseEvent.MOUSE_DOWN, startscrollF);

function startscrollF(event:MouseEvent):void {

paramF(combo_box.mouseY,combo_box.scrollPosition,combo_box.height-10,combo_box.maxScrollPosition);

this.addEventListener(Event.ENTER_FRAME,scrollF);

this.addEventListener(MouseEvent.MOUSE_UP,stopscrollF);

}

function scrollF(e:Event):void{

combo_box.scrollPosition=Math.round(Math.min(combo_box.mouseY*m+b,combo_box.maxScrollPosition));

}

function stopscrollF(e:Event):void{

this.removeEventListener(Event.ENTER_FRAME,scrollF);

}

function paramF(x1:Number,y1:Number,x2:Number,y2:Number):void{

m=(y1-y2)/(x1-x2);

b=m*x1-y1;

}

[garykang]

Scene 2, Layer 'As', Frame 1, Line 53	1119: Access of possibly undefined property scrollPosition through a reference with static type fl.controls:ComboBox.
Scene 2, Layer 'As', Frame 1, Line 53	1119: Access of possibly undefined property maxScrollPosition through a reference with static type fl.controls:ComboBox.
Scene 2, Layer 'As', Frame 1, Line 48	1119: Access of possibly undefined property maxScrollPosition through a reference with static type fl.controls:ComboBox.
Scene 2, Layer 'As', Frame 1, Line 48	1119: Access of possibly undefined property scrollPosition through a reference with static type fl.controls:ComboBox.

this is the error i get...

i apply this into combobox

var m:Number;

var b:Number;

combobox.addEventListener(MouseEvent.MOUSE_DOWN, startscrollF);

function startscrollF(event:MouseEvent):void {

paramF(combobox.mouseY,combobox.scrollPosition,combobox.height-10,combobox.maxScrollPosition);

this.addEventListener(Event.ENTER_FRAME,scrollF);

this.addEventListener(MouseEvent.MOUSE_UP,stopscrollF);

}

function scrollF(e:Event):void{

combobox.scrollPosition=Math.round(Math.min(combobox.mouseY*m+b,combobox.maxScrollPosition));

}

function stopscrollF(e:Event):void{

this.removeEventListener(Event.ENTER_FRAME,scrollF);

}

function paramF(x1:Number,y1:Number,x2:Number,y2:Number):void{

m=(y1-y2)/(x1-x2);

b=m*x1-y1;

}

[kglad]

try

var m:Number;

var b:Number;

combo_box.addEventListener(MouseEvent.MOUSE_DOWN, startscrollF);

function startscrollF(event:MouseEvent):void {

paramF(combo_box.mouseY,combo_box.dropdown.verticalScrollPosition,combo_box.height-10,combo_box.dropdown.maxVerticalScrollPosition);

this.addEventListener(Event.ENTER_FRAME,scrollF);

this.addEventListener(MouseEvent.MOUSE_UP,stopscrollF);

}

function scrollF(e:Event):void{

combo_box.dropdown.scrollPosition=Math.round(Math.min(combo_box.mouseY*m+b,comb o_box.dropdown.maxVerticalScrollPosition));

}

function stopscrollF(e:Event):void{

this.removeEventListener(Event.ENTER_FRAME,scrollF);

}

function paramF(x1:Number,y1:Number,x2:Number,y2:Number):void{

m=(y1-y2)/(x1-x2);

b=m*x1-y1;

}

p.s. you may need to use a render event (shown in message 4).

[garykang]

The result i get from this coding. The scroll Bar start from bottom and scrollpane cannot scrolling.

I was test on mobile phone.

coding i use:

var m:Number;

var b:Number;

combobox.addEventListener(MouseEvent.MOUSE_DOWN, startscrollF);

function startscrollF(event:MouseEvent):void {

paramF(combobox.mouseY,combobox.dropdown.verticalScrollPosition,combobox.height-10,combobox.dropdown.maxVerticalScrollPosition);

this.addEventListener(Event.ENTER_FRAME,scrollF);

this.addEventListener(MouseEvent.MOUSE_UP,stopscrollF);

}

function scrollF(e:Event):void{

combobox.dropdown.verticalScrollPosition=Math.round(Math.min(combobox.mouseY *m+b,combobox.dropdown.maxVerticalScrollPosition));

}

function stopscrollF(e:Event):void{

this.removeEventListener(Event.ENTER_FRAME,scrollF);

}

function paramF(x1:Number,y1:Number,x2:Number,y2:Number):void{

m=(y1-y2)/(x1-x2);

b=m*x1-y1;

}

[kglad · Accepted solution]

use;

var m: Number;

var b: Number;

combo_box.addEventListener(MouseEvent.MOUSE_DOWN, startscrollF);

function startscrollF(event: MouseEvent): void {

    paramF(combo_box.mouseY, combo_box.dropdown.verticalScrollPosition, combo_box.dropdown.height - 10, combo_box.dropdown.maxVerticalScrollPosition);

    this.addEventListener(Event.ENTER_FRAME, scrollF);

    stage.addEventListener(MouseEvent.MOUSE_UP, stopscrollF);

}

function scrollF(e: Event): void {

    combo_box.dropdown.verticalScrollPosition = Math.round(Math.min(combo_box.dropdown.mouseY * m + b, combo_box.dropdown.maxVerticalScrollPosition));

}

function stopscrollF(e: Event): void {

    this.removeEventListener(Event.ENTER_FRAME, scrollF);

}

function paramF(x1: Number, y1: Number, x2: Number, y2: Number): void {

    m = (y1 - y2) / (x1 - x2);

    b = m * x1 - y1;

}

[garykang]

emm.... this coding no error but still unable scroll the combobox...i try few times ald..

the combobox still function as normal combobox..

[kglad]

create a new fla, add a combobox to the stage and assign its instance name combo_box.

use the properties panel to add items to the combobox.

copy the code in message 12 and paste it into the actions panel.

test.

[garykang]

i test with AS3 and Air for Android

follow the step.

-combobox instance name= combo_box

-properties panel(data provider)= add name

-copy message12 as AS.

-test

result: Still same as before.cannot scolling

[kglad]

test it in flash pro.

[garykang]

i need develop android App.

i using Adobe Flash Professional CS6(AIR for Android) for development..

[kglad]

i know.

test in flash pro.

if that fails you've done something wrong. 

if that works, that's as much help as i give via the forums.  testing on mobile devices is too time-consuming (for me) to do free of charge.

[garykang]

done test...cant scroll with mouse click ..

still have same problem.

sorry for taking you too much time

[kglad]

you don't scroll with a mouse click.  you mouse down and drag your mouse.

try, http://www.kglad.com/Files/forums/test2.html

[garykang]

ya...i get it...before that i open the combobox and drag so cant make it...

finally solve this problem.

Thanks you very much.

sorry take u a lot of time .

thanks for always helping me..

[kglad]

you're welcome.