WebView wv;
wv.setVerticalScrollBarEnabled(false); 取消Vertical ScrollBar显示
wv.setHorizontalScrollBarEnabled(false); 取消Horizontal ScrollBar显示
wv.setVerticalScrollBarEnabled(true);
wv.setHorizontalScrollBarEnabled(true);
wv.setScrollBarStyle(View.SCROLLBARS_INSIDE_INSET) ;
wv.setScrollBarStyle(SCROLLBARS_OUTSIDE_INSET) ;
wv.setHorizontalScrollbarOverlay(boolean overlay);
wv.setVerticalScrollbarOverlay(boolean overlay);