getAndroidHashKey method
Android apps must be digitally signed with a release key before you can upload them to the store. This method helps to get the release key for setup android in facebook portal
Implementation
Future<String?>? getAndroidHashKey() async{
String? hashKey;
if(Platform.isAndroid)
hashKey = await _channel!.invokeMethod('printHashKey') as String?;
else
hashKey = null;
return hashKey;
}