In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code, I am running a progressbar. The progressbar is shown, however it is doing nothing.

In the following code I am running a progressbar. The progressbar is shown, however it is doing nothing.
Once I set setIndeterminate(false);, it is working as expected. (It updates every 500 ms and increment by 1.)
How can I change that code, to show a indeterminate progressbar?