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Java Development

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Developer
avinash_kumar_ispg_in
Posts: 172
Registered: ‎01-02-2012
My Device: 8520 curve
My Carrier: compny

How To detect when scrolling are stopped.

Hi guy,

 

 while i am stoping to scroll the screen that time i want to display one message,how i can detect when scrolling has been stoped.

 

 

thanks 

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Developer
arkadyz
Posts: 2,268
Registered: ‎07-08-2009
My Device: various
My Carrier: various

Re: How To detect when scrolling are stopped.

Schedule that message display with invokeLater - it will be displayed after the scrolling is stopped.

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Developer
avinash_kumar_ispg_in
Posts: 172
Registered: ‎01-02-2012
My Device: 8520 curve
My Carrier: compny

Re: How To detect when scrolling are stopped.

hi ark

 

Thanks for reply

 

i have to schedule this message inside scrollchange listner  or what? if i have more than on field on screen i have to detect the position of the field where scroll stoped.

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Developer
arkadyz
Posts: 2,268
Registered: ‎07-08-2009
My Device: various
My Carrier: various

Re: How To detect when scrolling are stopped.

Actions scheduled via invokeLater are executed when the UI framework is "idle" - meaning it has finished processing all outstanding UI events and its event queue is empty (except for the invokeLater itself, of course). It means that when the code inside invokeLater runs you can be sure that there is nothing happening on the screen - no scrolling, no repainting of any fields, etc.

 

If you want to check the manager's scrolling position after each scroll, the most logical place to initiate that invokeLater is inside scrollChanged of a scroll change listener. The exact code depends on what you are trying to achieve, of course.

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