signIn method
设置用户账号 provider 账号来源。不能以下划线"_"开头,使用大写字母和数字标识,长度小于32 字节
Implementation
Future<bool> signIn(String userID, {String? provider}) async {
if (!_supportPlatform) return false;
final Map<String, String> map = <String, String>{'userID': userID};
if (provider != null) map['provider'] = provider;
final bool? state =
await _channel.invokeMethod<bool?>('onProfileSignIn', map);
return state ?? false;
}