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请教代码问题 #435

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FlyOceanFish opened this issue Apr 11, 2018 · 0 comments
Open

请教代码问题 #435

FlyOceanFish opened this issue Apr 11, 2018 · 0 comments

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@FlyOceanFish
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FlyOceanFish commented Apr 11, 2018 •
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PNLineChart中
image

CATransaction 事务是不需要的是吧？还有UIGraphicsBeginImageContext在这个代码当中的作用是什么呢？
image

还有这个circleCenter其实就是x、y的
image

CGContextStrokePath其实调用一次就行了，没必要每次都得调用一次
CGContextRef ctx = UIGraphicsGetCurrentContext(); UIGraphicsPopContext(); UIGraphicsPushContext(ctx);
drawRect中如果不写pop和push会有什么问题吗？我看了资料说drawRect方法下是不用push的，不知作者在这调用有何用处呢？
@FlyOceanFish FlyOceanFish changed the title 代签请教问题 请教代码问题 Apr 11, 2018
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