uiview - UIImageView の UIBezierPath でスワイプを描く

Question

UIImageView で何かを描画しようとしています。次のコードを使用して、UIView で問題なく描画できます。

@implementation DrawView
{
    UIBezierPath *path; 
}

- (id)initWithCoder:(NSCoder *)aDecoder 
{
    if (self = [super initWithCoder:aDecoder])
    {
        [self setMultipleTouchEnabled:NO]; 
        [self setBackgroundColor:[UIColor whiteColor]];
        path = [UIBezierPath bezierPath];
        [path setLineWidth:2.0]; 
    }
    return self;
}

- (void)drawRect:(CGRect)rect 
{
    [[UIColor blackColor] setStroke];
    [path stroke];
}


- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint p = [touch locationInView:self];
    [path moveToPoint:p];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    UITouch *touch = [touches anyObject];
    CGPoint p = [touch locationInView:self];
    [path addLineToPoint:p]; // (4)
    [self setNeedsDisplay];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self touchesMoved:touches withEvent:event];
}

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    [self touchesEnded:touches withEvent:event];
}

これはimageviewをスキップします..私が必要とするのは反対です。私は uiimageview で描画し、uiview をスキップしたい..どうすればそれを行うことができますか? 前もって感謝します..