CAGradientLayer不够流畅？

问题描述

我正在为我的 UIView 的每个背景做 CAGradientLayer ，但我遇到了一个小问题。渐变似乎不够平滑。颜色之间的过渡将呈现。你可以在这张图片中看到它。

I'm doing a CAGradientLayer for every background of my UIViews, but I have a small problem. The gradient doesn't seem that smooth enough. The transition between the colors are to present. You can see it in this picture.

这就是我在UIView初始化程序中实现此渐变的方法。

This is how I implemented this gradient in the initializer of my UIView.

CAGradientLayer *layer = [CAGradientLayer layer];
layer.colors = [NSArray arrayWithObjects:
                (id)[[UIColor darkKinepolisColor] CGColor],
                (id)[[UIColor lightKinepolisColor] CGColor],
                (id)[[UIColor lightKinepolisColor] CGColor],
                (id)[[UIColor darkKinepolisColor] CGColor],
                nil];
layer.locations = [NSArray arrayWithObjects:
                   [NSNumber numberWithFloat:0],
                   [NSNumber numberWithFloat:0.4],
                   [NSNumber numberWithFloat:0.6],
                   [NSNumber numberWithFloat:1],
                   nil];
layer.startPoint = CGPointMake(0, 0);
layer.frame = self.layer.bounds;
layer.endPoint = CGPointMake(1, 1);
layer.contentsGravity = kCAGravityResize;
[self.layer addSublayer:layer];

优秀的开发人员可以帮我解决这个问题吗？谢谢！

Could you, fine developers, help me with this problem? Thanks!

推荐答案

从我所见，CAGradientLayer不支持抖动，但CGGradient支持抖动。请参阅我的答案。另请参阅其他答案，例如关于使用CGGradient。

From what I've seen CAGradientLayer does not support dithering, but CGGradient does. See my answer here. Also see the other answers for example on using CGGradient.

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