can't show VideoControl on E52

[nathanieldai]

I want to take photo in my j2me application. It runs well on the emulator, but it exited without any error message when on E52.

I just know that the application would crash if the VideoControl.setVisable(true) was called.

Here are all the codes:

import java.io.IOException;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.media.Manager;
import javax.microedition.media.MediaException;
import javax.microedition.media.Player;
import javax.microedition.media.control.VideoControl;

import com.crm.ui.base.DeviceScreen;
import com.crm.ui.base.FrameSession;
import com.crm.ui.base.Theme;

public class CameraCanvas extends Canvas implements CommandListener {
	
	private VideoControl mVideoControl;
	private Player mPlayer;
	private DeviceScreen previous;
	private final Command back;

	public CameraCanvas(DeviceScreen previous) {
		this.previous = previous;
		back = new Command("back", Command.BACK, 2);
		addCommand(back);
		setCommandListener(this);
		openResource();
	}

	private void openResource() {
		try {
			mPlayer = Manager.createPlayer(FrameSession.playerParameter);
			mPlayer.realize();
			mVideoControl = (VideoControl) mPlayer.getControl("VideoControl");
			mVideoControl.initDisplayMode(VideoControl.USE_DIRECT_VIDEO, this);
			mPlayer.start();
			mVideoControl.setVisible(true);
			mVideoControl.setDisplaySize(140, 140);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (MediaException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Throwable e) {
			
		}
	}

	private void closeResource() {
		mVideoControl = null;
		if (mPlayer != null) {
			try {
				mPlayer.close();
			} catch (Throwable e) {
				e.printStackTrace();
			}
			mPlayer = null;
		}
	}

	protected void paint(Graphics g) {
		g.setColor(Theme.WHITE);
		g.fillRect(0, 0, getWidth(), getHeight());
	}

	public void commandAction(Command c, Displayable d) {
		if (c == back) {
			closeResource();
			previous.show();
		}
	}

}

Please help me! Thank you very much!

[r2j7]

Hello nathanieldai,

could perform a test by using this code example: http://wiki.forum.nokia.com/index.ph...ots_in_Java_ME

The code of the example MIDlet does not crash without exception on E52 with the latest firmware. If you test the example, does it crash also?

Regards,
r2j7

[nathanieldai]

Dear r2j7,

Thank you for your help. Unfortunately, it still doesn't work.
The platform shows "NokiaE52-1/031.010/sw_platform=S60;sw_platform_version=3.2;java_build_version=1.0.5", when System.getProperty("microedition.platform") is called.
Are there some bugs in this platform?
This problem made me crazy...

[nathanieldai]

Dear r2j7,

Could you tell me the platform of the latest firmware which you have tested. Thank you very much!

Regards,
nathanieldai

Hello nathanieldai,

could perform a test by using this code example: http://wiki.forum.nokia.com/index.ph...ots_in_Java_ME

The code of the example MIDlet does not crash without exception on E52 with the latest firmware. If you test the example, does it crash also?

Regards,
r2j7

[r2j7]

Hello nathanieldai,

the firmware version for E52 which I used for testing is 33.002.

For testing with that version and other devices, you could use Remote Device Access service:

Home > Technology Topics > Application Quality > Testing > Remote Device Access > Remote Device Access Services

Remote Device Access (RDA) is a service that allows developers to test their mobile applications and services remotely on various Nokia devices based on Symbian and Maemo OS. The main features of the service are remote controlling a device, installing and running applications, transferring files, and analyzing log files in real-time. RDA is an Internet-based solution and the basic requirements for using the service are a Forum Nokia user account, a standard Web browser, and Java Web Start (comes typically with JRE; version 5.0 or newer is required). Usage is free of charge for all Forum Nokia members.

Regards,
r2j7

[nathanieldai]

Dear r2j7,

Thank you for your help! It works now!
I just updated the platform to the latest version by PC suit, and the problem was solved. The latest version is 33.003. It seems that there is a bug in the old version.

Regards,
nathanieldai

Hello nathanieldai,

the firmware version for E52 which I used for testing is 33.002.

For testing with that version and other devices, you could use Remote Device Access service:

Home > Technology Topics > Application Quality > Testing > Remote Device Access > Remote Device Access Services

Remote Device Access (RDA) is a service that allows developers to test their mobile applications and services remotely on various Nokia devices based on Symbian and Maemo OS. The main features of the service are remote controlling a device, installing and running applications, transferring files, and analyzing log files in real-time. RDA is an Internet-based solution and the basic requirements for using the service are a Forum Nokia user account, a standard Web browser, and Java Web Start (comes typically with JRE; version 5.0 or newer is required). Usage is free of charge for all Forum Nokia members.

Regards,
r2j7

[r2j7]

Hello nathanieldai,

that's great to hear!

It seems that there is a bug in the old version.

Interesting, I will check this further. Thank you for your help in verifying this issue!

Regards,
r2j7