本文共 810 字，大约阅读时间需要 2 分钟。

These days, I  troubled by  the  problem about Flutter Class not found.

Today I seen a example  from flutter sdk.

I found that creating FlutterView didn't use the Flutter Class

So, I tried this  method to create FlutterView Successful

I think the new version of sdk was not have Flutter Class already

protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        if (flutterEngine == null) {            flutterEngine = new FlutterEngine(this, null);            flutterEngine.getDartExecutor().executeDartEntrypoint(                    DartExecutor.DartEntrypoint.createDefault()            );        }        FlutterView flutterView=findViewById(R.id.fv);        flutterView.attachToFlutterEngine(flutterEngine);    }