新的注册方式在onAttach时执行attachToView

android/src/main/java/com/idlefish/flutterboost/containers/FlutterSplashView.java

@@ -182,7 +182,7 @@ public class FlutterSplashView extends FrameLayout {
 
     public void onAttach() {
         Debuger.log("BoostFlutterView onAttach");
-
+        mFlutterEngine.getPlatformViewsController().attachToView(flutterView);
         flutterView.attachToFlutterEngine(mFlutterEngine);
 
     }
@@ -190,7 +190,7 @@ public class FlutterSplashView extends FrameLayout {
 
     public void onDetach() {
         Debuger.log("BoostFlutterView onDetach");
-
+        mFlutterEngine.getPlatformViewsController().detachFromView();
         flutterView.detachFromFlutterEngine();
 
     }