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並前往https://stackify.dev/876925-expression-resolves-to-an-unused-function-cgcontext-savegstate

Expression resolves to an unused function - Stackify

CGContext.saveGState(context!) Solution 2: Try this code: UIGraphicsBeginImageContext(view.frame.size) ...

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查詢 「CGContext」的人也找了：

  1. CGContextRef
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  2. UIGraphicsImageRenderer
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  3. CGBitmapContextCreateImage
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  4. CGRect
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  5. CGImage
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  6. Coregraphics
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  7. Objective c CGContextRef
    8.
  8. UIGraphicsGetCurrentContext
    9.