Stop Progressbar manual scrolling in Android

I have already posted my query here, but unfortunately, not getting the required support for this simple query.

I am using a progressbar widget in my application to show the downlo开发者_如何学编程ad progress.

In the current state, I am able to manually move the slider back and forth while download is progressing. How can I prevent the manual moving of progressbar, instead it works only based on

progressbar.setProgress(progressbar.getProgress() + 1024); -- currently this works perfect, but I need to prevent the manual moving of progressbar during download.

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There is example code on the Android developers website: https://developer.android.com/reference/android/widget/ProgressBar.html

Have you followed that? I doubt the progress bar is scrollable by default, it would be a seek bar then