iOS 设置上下左右圆角

CAShapeLayer*maskLayer = [CAShapeLayerlayer]; maskLayer.path = [UIBezierPathbezierPathWithRoundedRect:view.bounds byRoundingCorners:UIRectCornerBottomLeft|UIRectCornerBottomRightcornerRadii: (CGSize){5.0f,5.0f}].CGPath view.layer.masksToBounds =YES; view.layer.mask = maskLayer;

UIRectCorner有五种

UIRectCornerTopLeft    //上左

UIRectCornerTopRight  //上右

UIRectCornerBottomLeft  // 下左

UIRectCornerBottomRight // 下右

UIRectCornerAllCorners // 全部