addKeyListener method

void addKeyListener(
  1. String key,
  2. VoidCallback f
)

Add a ChangeNotifier to this key

Implementation

void addKeyListener(String key, VoidCallback f) {
  if (_keyListeners[key] == null) {
    _keyListeners[key] = <VoidCallback>{};
  }
  _keyListeners[key]!.add(f);
}