Android ScrollView Scroll to the top

Sometimes use ScrollView, inside the control is more, open the interface, will slip to the bottom, if you want to set sliding to the top, there are generally two ways
1. Use Fullscrol (), Scrollview.fullscroll (scrollview.focus_down); scroll to the bottom

Scrollview.fullscroll (scrollview.focus_up); scroll to top

It is important to note that the method cannot be called directly
Because many of the Android functions are synchronized based on Message Queuing, an action is required,
After AddView, not equal to the immediate display, but in the queue to wait for processing, although soon, but if the call fullscroll immediately, the view may not be displayed, so it will fail
Should be updated in the new thread via handler

Scrollview.post (new  Runnable () {            @Override            publicvoid  run () {                Scrollview.fullscroll (SCROLLVIEW.FOCUS_UP);            }        });

2. If there are other controls above the ScrollView control, you can set the focus, and the scroll bar can slide to the top
Let ProgressBar get focus, scroll bar to top
Progressbar.setfocusable (TRUE);
Progressbar.setfocusableintouchmode (TRUE);
Progressbar.requestfocus ();

Android ScrollView Scroll to the top