Photoview and ondraw

Question

i have been struggling doing a onDraw with photoview. I used another class to extend photoview and override the onDraw. I get the drawable and show it on the extended class. I then get the image that is being used and create a bitmap with it. I then get the image and create a new bitmap, then add that to the canvas. The canvas is then used for the ondraw. The coordinates are found by getting the width of the photoview and x off the photontap and then just doing x*width, then doing the same for y and then invalidate it. I have added the code below.

    drawHandler.setOnPhotoTapListener(new OnPhotoTapListener() {
        @Override
        public void onPhotoTap(ImageView view, float x, float y) {
            onTap( x* width, y*height);
        }
    });
}

public void onTap(float x, float y){
    oldy = currenty;
    oldx = currentx;

    currenty = y;
    currentx = x;
    if(oldy!=null && oldx!=null) {
        if(oldx!= x && oldy!=y) {
            drawHandler.x = x;
            drawHandler.y = y;
            drawHandler.oldX = oldx;
            drawHandler.oldY = oldy;
            drawHandler.draw(canvas);
            drawHandler.invalidate();
        }
    }

}

This is within the DrawHandler

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        Paint p = new Paint(Paint.ANTI_ALIAS_FLAG);
        Log.d("Draw Method Accessed", "About to draw");
        canvas.drawLine(x, y, oldX, oldY, black);

    }
}

I dont know why it isn't drawing the line