Java Development

[roses_r]

HI

Im trying to replace a bitmaptField from a background thread and it throws a

IllegalArgument Exception Manager.replace: Oldfield is not a child.

Is there anyway i can get this working? because what im trying is to pass images to the bitmapfield in my mainscreen. any suggestions?

Thanks

[RexDoug]

A background thread cannot operate on the GUI - only the event thread can do this.

You can wrap the GUI operation in a Runnable, and pass this runnable to UiApplication.invokeLater().

This places the GUI work in the event queue, where it will be handled by the event thread.

[roses_r]

Yeah RexDoug...Ive wrapped it in a runnable object and done hte invoke later. What i noticed was i could add a new bitmapField from the background but I cant replace the existing one.

Please have a look at this

UiApplication.getUiApplication().invokeLater(new Runnable() {
			
			public void run() 
			{
				synchronized (camView) 
				{						
					try
					{
						camView.jpegBytes = jp;
						System.out.println(bit);
						test t = new test();
						
						BitmapField bmpField = new BitmapField(bit);
						
						
						System.out.println("Replacing BitmapField.");
						t.replace(camView.bmpStream,bmpField );
						t.invalidate();
						System.out.println("Successfully replaced.");
						
						
					}
					catch(IllegalArgumentException e)
					{
						System.out.println("Exception while displaying streaming images: " + e.getMessage());
					}
				}													
			}
		});

[shahumang8]

Hi,  roses_r

     You put your code like this.

_workThread = new Thread(new Runnable() {
				public void run() {

					try {
						
						synchronized (Application.getEventLock()) {

	                                           camView.jpegBytes = jp;
						  System.out.println(bit);
						   test t = new test();
						
						   BitmapField bmpField = new BitmapField(bit);
						
						
						   System.out.println("Replacing BitmapField.");
						   t.replace(camView.bmpStream,bmpField );
						   t.invalidate();
						   System.out.println("Successfully replaced.");

						}

					} catch (Exception e) {
					}
				}
			});
			_workThread.start();

I hope you error sloved.

[roses_r]

whats this processSuccess method u have used?

[shahumang8]

Sorry.There are some extra field now i edit my old post so check it out,

Thanks.

[roses_r]

well i removed them before and tried as well..didnt work for me

still throws an excception saying

Manager.replace: Old field is not a child

[peter_strange]

Have a look at my response in the other Thread in which you posted a similar question:

http://supportforums.blackberry.com/t5/Java-Development/Manager-replace-returns-IllegalArgumentExcep...