openUniMp method
Implementation
@override
Future<String?> openUniMp(String appID,
{String? path, Map<String, dynamic>? extraData}) async {
// 通过渠道,调用原生代码代码的方法
return await methodChannel.invokeMethod<String>(
"open", {"AppID": appID, "Path": path, "ExtraData": extraData});
}