【Flutter】RenderFlex overflowedエラーの対応法。Flutter DevToolsのInspectorを使用して問題を特定。

══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════

The overflowing RenderFlex has an orientation of Axis.vertical.
The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and
black striped pattern. This is usually caused by the contents being too big for the RenderFlex.
Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the
RenderFlex to fit within the available space instead of being sized to their natural size.
This is considered an error condition because it indicates that there is content that cannot be
seen. If the content is legitimately bigger than the available space, consider clipping it with a
ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex,
like a ListView.
The specific RenderFlex in question is: RenderFlex#09969 relayoutBoundary=up5 OVERFLOWING:
  needs compositing
  creator: Column ← Padding ← Center ← Listener ← _GestureSemantics ← RawGestureDetector ←
    GestureDetector ← DebugContainer ← HomeTab ← DownloadingOverlayWidget ← DeviceShadowListener ←
    KeyedSubtree-[GlobalKey#1b409] ← ⋯
  parentData: offset=Offset(32.0, 32.0) (can use size)
  constraints: BoxConstraints(0.0<=w<=350.0, 0.0<=h<=740.0)
  size: Size(350.0, 740.0)
  direction: vertical
  mainAxisAlignment: spaceBetween
  mainAxisSize: max
  crossAxisAlignment: center
  verticalDirection: down
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A RenderFlex overflowed by 1.00 pixels on the bottom.

class HomeTab extends ConsumerStatefulWidget {
  const HomeTab({super.key});

  @override
  _HomeTabState createState() => _HomeTabState();
}

class _HomeTabState extends ConsumerState<HomeTab> {
  // ...

  @override
  Widget build(BuildContext context) {
    // 必要なプロバイダーの読み取りやウォッチはここに含める

    return DebugContainer(
      child: Center(
        child: Padding(
          padding: const EdgeInsets.all(32.0),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: <Widget>[
              // Overflowエラーを引き起こしている可能性のあるウィジェット
              Align(
                alignment: Alignment.topCenter,
                child: Column(
                  children: [
                    // ... 他のウィジェット

                    // エラーが発生している可能性のあるTopMessageBarウィジェット
                    firmwareUpdate.when(
                      data: (response) {
                        if (response.message == "NEW_FIRMWARE_AVAILABLE") {
                          return TopMessageBar(
                            message:
                                "新しいミーアのバージョン（${response.newFirmwareVersion}）がダウンロード可能です",
                            // ... TopMessageBarの他のプロパティ
                          );
                        } else {
                          return SizedBox.shrink();
                        }
                      },
                      // ... ローディングとエラーの状態
                    ),
                    
                    // ... 他のウィジェット
                  ],
                ),
              ),
              
              // ... 他のColumn内のウィジェット
            ],
          ),
        ),
      ),
    );
  }
}

padding: const EdgeInsets.all(32.0),

padding: const EdgeInsets.fromLTRB(32.0, 32.0, 32.0, 0.0),