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並前往https://medium.com/@NALSengineering/flutter-from-zero-to-hero-part-7-the-power-of-globalkey-6abf818225a0

Flutter From Zero to Hero. Part 7: The Power of GlobalKey

Next, we'll use the scaffoldKey to find the Scaffold, getting the State of Scaffold through currentState and call showBottomSheet . scaffoldKey.

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查詢 「Flutter currentState」的人也找了：

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  3. Flutter GlobalKey context
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  4. Flutter State class
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  5. Flutter key
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  6. Flutter get current state from widget
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  7. Flutter Form
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