How to start and finish progressBar dynamically in android

Question

When I skip second activity class from first activity class, I will start imageprocessing on certain image in second activity and then until new image comes to screen I wnt

Answer 1

Try this way first Intialize your ProgressDialog

 progressDialog = ProgressDialog.show(this, "", "Trying to ...");

then start a new thread in which you can write your code which needs to be executed and finally in the handler handle the code and end the progessDialog