uiview - How to add line at the top of keyboard in ios? -

i have view in show numeric keyboard. problem keyboard missing top line. white background unpleasant effect appears:

how can add 1pt view @ top simulate top line?

quick , dirty:

- (bool)textfieldshouldbeginediting:(uitextfield *)textfield {     uiview *separatorview = [[uiview alloc] initwithframe:cgrectmake(0, 0, cgrectgetwidth([uiscreen mainscreen].bounds), 1.0 / [uiscreen mainscreen].scale)];     separatorview.backgroundcolor = [uicolor lightgraycolor];     textfield.inputaccessoryview = separatorview;      return yes; }