show method Null safety

void show(
  1. [dynamic _]
)
inherited

show is used to show the OverlayBuilder.overlayChild widget overlaying its screen or child.

Implementation

void show([_]) {
  assert(
    !isShowing,
    'Cannot show an overlay widget when it is already showing.',
  );

  final overlay = _overlayEntry = OverlayEntry(
    builder: _builder,
    maintainState: widget.maintainState,
    opaque: widget.opaque,
  );

  _state.insert(overlay);
}