.onChangeSize()
SwiftUI โฉ Views โฉ View โฉ .onChangeSize()
ๅๅ็บ๏ผ .readSize()๏ผไฝๅ ็บๆญคๆนๆณ็ onChange
closure ๆฏๅจ frame size ๆๆน่ฎๆๆๆ่งธ็ผ๏ผไนๅฐฑๆฏ size ๆฒๆน่ฎๆ๏ผไธๆๆไปปไฝๅๆ๏ผๅ ๆญคไนไธๆ็็ๅปๅท่ก "read size" ็ๅไฝ๏ผๆไปฅๆนๅ็บ .onChangeSize() ๆ็ฌฆๅ็จๅผ็ๅๆ๏ผไนๆไธๆ่ชค็จใ
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