Invoke() does block?

I was wondering if the Invoke method to call the internal applications like the camera or application phone hangs until the user is done with the app? I want to take action when the user interaction with the internal application is complete. Alternatively, can I use the KeyListener or TrackWheelListener to track the interaction with the user? For example, it might be interesting for the user take a picture, and then do something with it, like composing an MMS or EMail. It would be in 4.2 preference.

You can call Application.isForeground () to see if your application is in the foreground.

In addition, if you are wondering whether or not a function is blocking, you can print an after the call and then check when it appears. (Yes, invokeApplication is a call blocking).

Tags: BlackBerry Developers

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