public override void didChangeDependencies()
{
base.didChangeDependencies();
if (widget.onWillPop != null)
{
_route?.removeScopedWillPopCallback(widget.onWillPop);
}
_route = ModalRoute.of(context);
if (widget.onWillPop != null)
{
_route?.addScopedWillPopCallback(widget.onWillPop);
}
}
public override void didUpdateWidget(StatefulWidget _oldWidget)
{
base.didUpdateWidget(_oldWidget);
D.assert(_route == ModalRoute.of(context));
WillPopScope oldWidget = _oldWidget as WillPopScope;
if (widget.onWillPop != oldWidget.onWillPop && _route != null)
{
if (oldWidget.onWillPop != null)
{
_route.removeScopedWillPopCallback(oldWidget.onWillPop);
}
if (widget.onWillPop != null)
{
_route.addScopedWillPopCallback(widget.onWillPop);
}
}
}