如何將角半徑應用於 UIBezierPath 繪製的矩形

所有 4 條邊的圓角半徑：

 UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) cornerRadius: 11];
[UIColor.grayColor setFill];
[rectanglePath fill];

左上角的圓角半徑：

 UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopLeft cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

右上角的圓角半徑：

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

左下角的圓角半徑：

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomLeft cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

右下角的圓角半徑：

 UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

底邊的圓角半徑：

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];

頂邊的圓角半徑：

UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(x,y,width,height) byRoundingCorners: UIRectCornerTopLeft | UIRectCornerTopRight cornerRadii: CGSizeMake(11, 11)];
[rectanglePath closePath];
[UIColor.grayColor setFill];
[rectanglePath fill];