After customizing the Uibtton class, the role of the @implementation override method

1 /**2 * Use to customize the size and position of the ImageView (Contentrect equals the bounds of the button)3  */4-(CGRect) Imagerectforcontentrect: (CGRect) Contentrect {5     returnCGRectMake (ContentRect.size.width- +) *0.5, at, +, $);6 }7 8 /**9 * After overriding this method (do not write code), after clicking on the effect of no highlightTen  */ One-(void) sethighlighted: (BOOL) highlighted{ A      -}

After customizing the Uibtton class, the role of the @implementation override method