My activity_main.xml is below, as you see, the height is set 40 dip.

And in MyEclipse, it looks like below:

enter image description here

But when I run it on my phone, it looks like below:

enter image description here

So my question is why the real height of the progressbar is not the one I set? How to increase the height of the progressbar?

android progress-bar android-progressbar
Edit
Report