[praveens]

How Develop a UI application Screen with effects like landscape/slide (left to right) or slide (right to left).Does anyone know how to do that please help me ..with sample code.

[hippocamp software]

it's available in 5.0 os: Screen Transitions

[praveens]

net.rim.device.api.ui.TransitionContext ,Dont know how to use the TransitionContext

please help me..

[hippocamp software]

it's not available yet, it's in the beta os/jde. the point is it's not worth spending time on it when it'll be a native feature within a few months.

viigo are the only 3rd party software house (that i'm aware of) that currently have the transitions and i've no idea how they managed to get it so smooth.

[praveens]

yes, facebook and some other TV application i have seen they are using effects .By using Bitmap they are deriving the effects.


this like will help i think

Animated Screen transitions - Java Development - BlackBerry Support Community Forums


But i have tried the same not able to make it working ...They are suggesting that use Bitmap for that ..

but dont know how to use.If you have tried anything let me know

[hippocamp software]

i've seen that thread, it's not a great help. you can use the Display class to get a screenshot of the current screen and pass it to the constructor of the new screen class you're pushing and then animate it off screen by overriding the paint method.

you'd need to implement some tweening algorithm to handle the fluid movement (good resource: Robert Penner's Easing Equations)

but as it'll soon be a native feature i decided it's not worth the effort!

[praveens]

ok..Thanks ..i will try ..

[praveens]

How to get the Screenshot of the current Screen uding Display.ScreenShot() ??

[e141]

Hi,

I think you can implement screen effects with code that will run on most BBs.

See pages 127-129 of "Beginning BlackBerry Development," by Anthony Rizk.

Alternatively, couldn't you use the Timer and TimerTask components to just move a Field or object off of the screen? Set the TimerTask to change the X or Y component of the Field or the object that you want to animate, until it is moved off screen. Schedule the task to occur every 200 to 300 milliseconds for a smooth transition.

That may work!

I have the above-noted text by Rizk, but haven't yet implemented the example code he provides. I believe it works.