Question

In my application I play a video on device and when I tap on screen while video is playing a popup window is opened at the center of the screen with a volume button on that popup screen. When I click on that button volume should increase and after maximum level of volume it should decrease. I don’t know how to do it programmatically in BlackBerry.

Answer 1

Check the article on video playing, Play a video in a UI field in a
BlackBerry device application, on section 8, the article
describes how to control volume.

To control the volume, you need to get javax.microedition.media.control.VolumeControl object from the javax.microedition.media.Player object.

Invoking Player.getControl(), using a String parameter with the name of the control will return the control object. Example code:

private VolumeControl getVolumeControl(Player player) 
{
    return (VolumeControl) player.getControl("VolumeControl");
}

After you have the VolumeControl object you can use int setLevel(int level) to set the volume level. API Link here.

You can check the Video Support section of the BlackBerry Java Application – Fundamental Guilds.