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listData.add(barcode.barcodes.first.rawValue ?? ""); }); }, ), Align( alignment: Alignment.bottomCenter, child: Container( alignment: Alignment.bottomCenter, height: 100, color: Colors.black.withOpacity(0.4), child: Row( mainAxisAlignment: MainAxisAlignment.spaceEvenly, children: [ ValueListenableBuilder( valueListenable: controller.hasTorchState, builder: (context, state, child) { if (state != true) { return const SizedBox.shrink(); } return IconButton( color: Colors.white, icon: ValueListenableBuilder<TorchState>( valueListenable: controller.torchState, builder: (context, state, child) { switch (state) { case TorchState.off: return const Icon( Icons.flash_off, color: Colors.grey, ); case TorchState.on: return const Icon( Icons.flash_on, color: Colors.yellow, ); } }, ), iconSize: 32.0, onPressed: () => controller.toggleTorch(), ); }, ), IconButton( color: Colors.white, icon: isStarted ? const Icon(Icons.stop) : const Icon(Icons.play_arrow), iconSize: 32.0, onPressed: _startOrStop, ), Center( child: SizedBox( width: MediaQuery.of(context).size.width - 200, height: 50, child: FittedBox( child: Text( barcode?.barcodes.first.rawValue ?? 'Scan something!', overflow: TextOverflow.fade, style: Theme.of(context) .textTheme .headlineMedium! .copyWith(color: Colors.white), ), ), ), ), IconButton( color: Colors.white, icon: ValueListenableBuilder<CameraFacing>( valueListenable: controller.cameraFacingState, builder: (context, state, child) { switch (state) { case CameraFacing.front: return const Icon(Icons.camera_front); case CameraFacing.back: return const Icon(Icons.camera_rear); } }, ), iconSize: 32.0, onPressed: (numberOfCameras ?? 0) < 2 ? null : () => controller.switchCamera(), ), ], ), ), ), ], ); }, );
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