Exception on vibration and backlight

[tdb]

Hello!

I have troubles using vibration and backlight control functions in a eSWT midlet. The problem is that after I create org.eclipse.swt.widgets.Display, I can no longer create javax.microedition.lcdui.Display; I have to use DeviceControl class.

When I call any of:

DeviceControl.setLights(0, 100 );
DeviceControl.setLights(0, 0 );
DeviceControl.startVibra(50, 500);

, I get exception(s):

java.lang.Error: SymbianOS error = -1 : General:
System error (-1)
	at com.symbian.util.NativeError.checkOOM(NativeError.java:161)
	at com.symbian.epoc.events.MIDEventServer.openEventServer(MIDEventServer.java:84)
	at com.symbian.epoc.events.MIDEventServer.<init>(MIDEventServer.java:62)
	at javax.microedition.lcdui.UiEventServer.<init>(UiEventServer.java:17)
	at javax.microedition.lcdui.Toolkit.initialize(Toolkit.java:179)
	at javax.microedition.lcdui.Toolkit.ensureInitialized(Toolkit.java:134)
	at javax.microedition.lcdui.Toolkit.getHandle(Toolkit.java:240)
	at javax.microedition.lcdui.ToolkitInvoker.toolkitGetHandle(ToolkitInvoker.java:85)
	at com.nokia.mid.ui.impl.DeviceControlImpl.<init>(DeviceControlImpl.java:78)
	at com.nokia.mid.ui.impl.DeviceControlImpl.setLights(DeviceControlImpl.java:153)
	at com.nokia.mid.ui.DeviceControl.setLights(DeviceControl.java:89)
	at com.rovemobile.captest.s60.BacklightSwitcher.run(Unknown Source)
	at com.rovemobile.captest.common.Repeater.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Exception caught in finalizer: java.lang.Error: SymbianOS error = -1 : General:
System error (-1)
java.lang.Error: SymbianOS error = -1 : General:
System error (-1)
	at com.symbian.util.NativeError.checkOOM(NativeError.java:161)
	at com.symbian.epoc.events.MIDEventServer.openEventServer(MIDEventServer.java:84)
	at com.symbian.epoc.events.MIDEventServer.<init>(MIDEventServer.java:62)
	at javax.microedition.lcdui.UiEventServer.<init>(UiEventServer.java:17)
	at javax.microedition.lcdui.Toolkit.initialize(Toolkit.java:179)
	at javax.microedition.lcdui.Toolkit.ensureInitialized(Toolkit.java:134)
	at javax.microedition.lcdui.Toolkit.disposeObject(Toolkit.java:313)
	at javax.microedition.lcdui.ToolkitInvoker.toolkitDisposeObject(ToolkitInvoker.java:91)
	at com.nokia.mid.ui.impl.DeviceControlImpl.registeredFinalize(DeviceControlImpl.java:106)
	at com.nokia.mid.ui.impl.DeviceControlImpl$1.finalize(DeviceControlImpl.java:72)

The code runs in emulator. S60 5th Edition SDK v0.9

Is there a workaround? Will it work on real device?

Thank you!!!
Michael

[grahamhughes]

You should test it on a real phone... emulators are often poor representations of the device.

Older Series 60 devices have poor or missing support for vibrate, so I wouldn't be entirely surprised if it causes a problem still.

Why can you not access the lcdui.Display?

[tdb]

Why can you not access the lcdui.Display?

It throws an exception saying you can't do that. It's documented in Nokia's docs.