How does ProgressBar drawable work?
问题 Background I wanted to make a rounded progress bar that is determinate (meaning android:indeterminate="false" ), so I searched the Internet and found a short answer of Romain Guy, here. So I grabbed the code and used it in a sample project: the (part of the) layout file: <ProgressBar android:layout_width="50dp" android:layout_height="50dp" android:background="@color/backColor" android:indeterminate="false" android:indeterminateOnly="false" android:max="100" android:progress="33" android