containsKey static method

bool containsKey(
  1. String? key
)

Returns true if persistent storage the contains the given key. Return null if key is null

Implementation

static bool containsKey(String? key) {
  if (key == null) {
    return false;
  }
  assert(_initCalled,
      "Prefs.init() must be called first in an initState() preferably!");
  assert(_prefsInstance != null,
      "Maybe call Prefs.containsKeyF() instead. SharedPreferences not ready yet!");
  return _prefsInstance?.containsKey(key) ?? false;
}