The Android title bar (titlebar) shows the progress bar

In the background thread to perform a variety of operations (network connectivity, big data storage), we want to let customers see the background there are operations in progress, it can effectively prompt the user, and do not occupy the current operating space, the best way is to have a progress bar in the title bar.

Code     [Java] Code protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Requestwindowfeature (window.feature_indeterminate_progress);//Register the Activity Interface progress bar function Setcontentview (r.layout.main) First     ; Setprogressbarindeterminatevisibility (TRUE);//Call this method Setprogressbarindeterminatevisibility (false) when the progress bar needs to be displayed; Call this method when you do not need to show the progress bar}