public void showCorner ( boolean leftTop , boolean rightTop , boolean leftBottom , boolean rightBottom ) { if ( SDK_LOLLIPOP ) { ( ( OptRoundRectDrawable ) getBackground ( ) ) . showCorner ( leftTop , rightTop , leftBottom , rightBottom ) ; } else { ( ( OptRoundRectDrawableWithShadow ) getBackground ( ) ) . showCorner ( leftTop , rightTop , leftBottom , rightBottom ) ; } }
show corner or rect