fix Input box bug

android/src/main/java/com/idlefish/flutterboost/BoostFlutterView.java

@@ -54,6 +54,7 @@ public class BoostFlutterView extends FrameLayout {
     private BoostFlutterEngine mFlutterEngine;
 
     private XFlutterView mFlutterView;
+    private PlatformPlugin mPlatformPlugin;
 
     private Bundle mArguments;
 
@@ -113,6 +114,7 @@ public class BoostFlutterView extends FrameLayout {
         if (mArguments == null) {
             mArguments = new Bundle();
         }
+        mPlatformPlugin = new PlatformPlugin((Activity) getContext(), mFlutterEngine.getPlatformChannel());
 
         mFlutterView = new XFlutterView(getContext(), getRenderMode(), getTransparencyMode());
         addView(mFlutterView, new FrameLayout.LayoutParams(

android/src/main/java/com/idlefish/flutterboost/XFlutterView.java

@@ -450,16 +450,15 @@ public class XFlutterView extends FrameLayout {
 
     // Initialize various components that know how to process Android View I/O
     // in a way that Flutter understands.
-    if(textInputPlugin==null){
-      textInputPlugin = new XTextInputPlugin(
-              this,
-              this.flutterEngine.getDartExecutor()
-      );
-      androidKeyProcessor = new XAndroidKeyProcessor(
-              this.flutterEngine.getKeyEventChannel(),
-              textInputPlugin
-      );
-    }
+
+    textInputPlugin = new XTextInputPlugin(
+            this,
+            this.flutterEngine.getDartExecutor()
+    );
+    androidKeyProcessor = new XAndroidKeyProcessor(
+            this.flutterEngine.getKeyEventChannel(),
+            textInputPlugin
+    );