ios – 如何在UIView中绘制不同颜色的多个UIBezierPath

这是代码

- (void)drawRect:(CGRect)rect {

    context = UIGraphicsGetCurrentContext();

    [[UIColor grayColor] setFill]; 
        [[UIColor greenColor] setstroke];

    UIBezierPath *aPath = [[UIBezierPath alloc] init]; 
        [aPath movetoPoint:CGPointMake(227,34.25)];
    [aPath addLinetoPoint:CGPointMake(298.25,34.75)];
    [aPath addLinetoPoint:CGPointMake(298.5,82.5)];
    [aPath addLinetoPoint:CGPointMake(251,83)];
    [aPath addLinetoPoint:CGPointMake(251,67.5)];
    [aPath addLinetoPoint:CGPointMake(227.25,66.75)];   
        [aPath closePath]; 
    aPath.linewidth = 2;
    [aPath fill]; 
    [aPath stroke];


    UIBezierPath*    aPath2 = [[UIBezierPath alloc] init];
    [aPath2 movetoPoint:CGPointMake(251.25,90.5)];
    [aPath2 addLinetoPoint:CGPointMake(250.75,83.25)];
    [aPath2 addLinetoPoint:CGPointMake(298.5,83)];
    [aPath2 addLinetoPoint:CGPointMake(298.5,90.25)];
    [aPath2 closePath];
    aPath2.linewidth = 2;
    [aPath2 fill]; 
    [aPath2 stroke];
    [paths addobject:aPath2];

问题是笔画和填充颜色是在当前上下文中设置的.
在同一个CGContextRef中可以用不同的颜色绘制不同的UIBezierPath吗？

或者我必须在单独的uiview中绘制每个UIBezierPath？