Java Development

[Shraddha]

Hi

I am developing an application that has a background thread which invokes a UIApplication. 

Is there anyway i can determine from this backgroud thread whether the UIApplication is already running? 

I tried to use Application.isAlive or isForeground, but i dont have the instance of this UIApplication in the backround thread.

In short, can anyone suggest how to determine if application is running from outside the application? (excuse the ill-framed sentence )

Thanks in advance

Shraddha

[yosoh · Accepted solution]

why dont you use runtime store to do this. take a look at this BB article which does something similar.

http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800783/How_To_...

regards,

yosoh 

[ttahir]

You can use the getVisibleApplications method in the net.rim.device.api.system.ApplicationManager class to retrieve descriptors for visible, running applications.

I think if you explain why you are looking for this function, we may be able to suggest a better solution instead.

Tariq

[richard_puckett]

  Hey Shraddha, how's it going? 

  In addition to the afore-mentioned methods, here's how I do what you're looking for.  It's a little old, and there's certainly room for improvement, but it's worked for me in the past.  "NoSuchModuleException" is one of my own, it's not part of RIM's API - basically just a marker on top of Exception.

public class ProcessUtils {

	public static int getProcessId(String moduleName) throws NoSuchModuleException {
		ApplicationManager appMgr = ApplicationManager.getApplicationManager();
		
		int moduleHandle = CodeModuleManager.getModuleHandle(moduleName);
		
		if (moduleHandle == 0) {
			throw new NoSuchModuleException();
		}
		
		ApplicationDescriptor[] appDes = CodeModuleManager.getApplicationDescriptors(moduleHandle);
		
		return appMgr.getProcessId(appDes[0]);
	}
	
	public static boolean isServiceRunning(String moduleName) {
		try {
			if (getProcessId(moduleName) == -1) {
				return false;
			}
			else {
				return true;
			}
		}
		catch (NoSuchModuleException e) {
			// This could be a problem...
			return false;
		}
	}
}

[Shraddha]

Hey Guys.. THanks a tonne!

Yosoh that was the API i needed.. thanks it worked. 

And Richard, always to the rescue  ... left me with no problems at all

Tariq, I needed this to invoke a GUI application from a thread listening for a particular SMS. 

Thanks all of you...