== DESCRIPTION

This sample Blackberry application demonstrates an approach for native BlackBerry camera usage.

== USAGE

=== Define your working directory path to store images that will be taken by camera:

public static final String WORKING_DIR = "file:///SDCard/camera_demo";

=== Define CameraFileSystemJournalListener object:

public class CameraUsageApplication extends UiApplication { ...

private static CameraFilesystemJournalListener filesystemListener;

...

filesystemListener = new CameraFilesystemJournalListener();

}

=== Enable filesystemListener after native camera application is started and disable after picture is taken:

==== Method to enable/disable listener:

public static void setFileSystemJournalListenerEnabled(boolean enabled) { if (enabled) { filesystemListener.resetFileName(); filesystemListener.resetStoredUSN(); UiApplication.getUiApplication().addFileSystemJournalListener(filesystemListener); } else { UiApplication.getUiApplication().removeFileSystemJournalListener(filesystemListener); } }

==== Enable listener before camera is started:

CameraUsageApplication.setFileSystemJournalListenerEnabled(true); Invoke.invokeApplication(Invoke.APP_TYPE_CAMERA, new CameraArguments());

==== Disable listener after camera application was closed and check if there was image taken.

For example inside the activate() method of the application:

public void activate() {

if (filesystemListener != null) {
  setFileSystemJournalListenerEnabled(false);

  String imageFileName = filesystemListener.getFileName();  // going to see if we have image taken

  if (StringUtils.isNotBlank(imageFileName)) {

    // perform some action with image taken

  }            
}
repaint();
super.activate();

}

== EXAMPLES

To see an example of native BlackBerry camera usage please launch CameraUsageApplication in your BlackBerry device simulator.