Android how to move scrollview child to top programatically -

i have scrollview contains numerous views on linearlayout.i have implemented expand , collapse layouts. onclick of view,it either expand or collapse.so when view expands,i want programmatically move scrollview such view comes on top of screen.see image below

i want move scrollview length shown on red line. child of scrollview contains textview(4:status bar notification) , imageview.further scrollview may or maynot contains views above or below textview imageview combination. have used customscrollview findout scroll y

public int newy=0; @override protected void onscrollchanged(int x, int y, int oldx, int oldy) {     super.onscrollchanged(x, y, oldx, oldy);     this.newy=y; } 

for have used following logic

 public void translateview(view view){     int[] xy =new int[2];    //view = imageview     view.getlocationonscreen(xy);     int scrolly = xy[1]+view.getbottom();     //screenheight =screenheight of phone     if(scrolly>screenheight){       //heading textview         textview.getlocationonscreen(xy);         int diff = screenheight-xy[1];         diff =math.abs(diff);         int moveheight = (int) (scrollview.newy+diff);         scrollview.smoothscrollto(0, moveheight);      } } 

so trying finding difference between y position of textview , subtracting screen height , scrolling scrollview difference,so view shown on top.but not working.any idea on how achieve this.

i found doing wrong. each screen comprises of statusbar , in case actionbar.so when calculating view y position,i calculating top of screen , whenever use increment value scrollview scroll,i moving view top of screen.so actual solution be

public void translateview(final view view){     int[] xy =new int[2];     view.getlocationonscreen(xy);     int scrolly = xy[1]+view.getbottom();       if(scrolly>dataholder.screenheight){         handle.getlocationonscreen(xy);         int actualy=xy[1]-dataholder.actionbarheight-dataholder.statusbarheight;         int moveheight = (int) (scrollview.newy+actualy);         scrollview.smoothscrollto(0, moveheight);        } } 

so doing view automatically reaches top of screen