为不同的贝塞尔路径填充不同的颜色

Question

我正在尝试像这样向不同的 bezierPaths 添加单独的颜色

UIGraphicsBeginImageContext(_v_sticker.frame.size);

UIColor *fillColor = [UIColor redColor];
[fillColor setFill];
UIColor *strokeColor = [UIColor blueColor];
[strokeColor setStroke];

p = [UIBezierPath bezierPath];
[p moveToPoint:CGPointMake(60, 10)];
[p addLineToPoint:CGPointMake(110, 60)];
[p addLineToPoint:CGPointMake(60, 110)];
[p addLineToPoint:CGPointMake(10, 60)];
[p closePath];
[p fill];
[p stroke];

fillColor = [UIColor redColor];
[fillColor setFill];
strokeColor = [UIColor blueColor];
[strokeColor setStroke];

p2 = [UIBezierPath bezierPath];
[p2 moveToPoint:CGPointMake(100, 10)];
[p2 addLineToPoint:CGPointMake(150, 60)];
[p2 addLineToPoint:CGPointMake(100, 110)];
[p2 addLineToPoint:CGPointMake(50, 60)];
[p2 closePath];
[p2 fill];
[p2 stroke];

CGMutablePathRef combinedPath = CGPathCreateMutableCopy(p.CGPath);
CGPathAddPath(combinedPath, NULL, p2.CGPath);
combined = [UIBezierPath bezierPathWithCGPath:combinedPath];
CFRelease(combinedPath);

mask = [CAShapeLayer new];
mask.path = combined.CGPath;

[_v_sticker.layer addSublayer:mask];
UIGraphicsEndImageContext();

但除了黑色，我什么也得不到。我可以给图层颜色但是我想直接分配不同的颜色并在单层贝塞尔路径中使用它们

谁能告诉我我哪里做错了？

Answer 1

你的代码有几个错误：

1. 您创建了一个图像上下文，但您不访问该图像 (UIGraphicsGetImageFromCurrentImageContext())。
2. 您没有在遮罩层中设置颜色（例如backgroundColor、strokeColor）。