Show short message on screen test project.
This project includes a custom UILabel class that can add rounded corners, borders, and margins.
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This is done by overriding UILabel's drawText.
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Override intrinsicContentSize and return the correct rectangle for use in Storyboard.
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Override sizeThatFits to return the correct rectangle so that it works correctly when using sizeToFit in code.
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It not worked when
lineBreakMode=.byCharWrapping.