getDouble static method
Returns 0 if key is null.
Implementation
static double getDouble(String? key, [double? defValue]) {
if (key == null) {
return 0;
}
assert(_initCalled, 'Prefs.init() must be called first!');
assert(_prefsInstance != null,
'Maybe call Prefs.getDoubleF(key) instead. SharedPreferences not ready yet!');
return _prefsInstance?.getDouble(key) ?? defValue ?? 0.0;
}