[flutter_example_packages] Add check kIsAurora for android

example/lib/packages/flutter_keyboard_visibility/page.dart

@@ -4,6 +4,7 @@
  */
 import 'dart:async';
 
+import 'package:flutter/foundation.dart' show kIsAurora;
 import 'package:flutter/material.dart';
 import 'package:flutter_example_packages/base/di/app_di.dart';
 import 'package:flutter_example_packages/base/package/package.dart';
@@ -14,7 +15,6 @@ import 'package:flutter_example_packages/widgets/blocks/block_item.dart';
 import 'package:flutter_example_packages/widgets/layouts/block_layout.dart';
 import 'package:flutter_example_packages/widgets/texts/export.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
-import 'package:flutter/foundation.dart' show kIsAurora;
 
 import 'model.dart';
 import 'package.dart';
@@ -40,11 +40,13 @@ class _FlutterKeyboardVisibilityPageState
   @override
   void initState() {
     super.initState();
-    _streamSub = model.onChangeKeyboardHeight().listen((height) {
+    if (kIsAurora) {
-      setState(() {
+      _streamSub = model.onChangeKeyboardHeight().listen((height) {
-        _keyboardHeight = height;
+        setState(() {
+          _keyboardHeight = height;
+        });
       });
-    });
+    }
   }
 
   @override

example/lib/packages/flutter_secure_storage/page.dart

@@ -4,6 +4,7 @@
  */
 import 'dart:async';
 
+import 'package:flutter/foundation.dart' show kIsAurora;
 import 'package:flutter/material.dart';
 import 'package:flutter_example_packages/base/di/app_di.dart';
 import 'package:flutter_example_packages/base/package/package.dart';
@@ -63,11 +64,13 @@ class _FlutterSecureStoragePageState
   @override
   void initState() {
     super.initState();
-    _streamSub = _controllerAurora.onChangeHeight.listen((event) {
+    if (kIsAurora) {
-      setState(() {
+      _streamSub = _controllerAurora.onChangeHeight.listen((event) {
-        _keyboardHeight = event;
+        setState(() {
+          _keyboardHeight = event;
+        });
       });
-    });
+    }
   }
 
   @override

example/lib/packages/shared_preferences/page.dart

@@ -5,6 +5,7 @@
 import 'dart:async';
 import 'dart:convert';
 
+import 'package:flutter/foundation.dart' show kIsAurora;
 import 'package:flutter/material.dart';
 import 'package:flutter_example_packages/base/di/app_di.dart';
 import 'package:flutter_example_packages/base/package/package.dart';
@@ -56,11 +57,13 @@ class _SharedPreferencesPageState extends AppState<SharedPreferencesPage> {
   void initState() {
     super.initState();
     model.reloadValues();
-    _streamSub = _controllerAurora.onChangeHeight.listen((event) {
+    if (kIsAurora) {
-      setState(() {
+      _streamSub = _controllerAurora.onChangeHeight.listen((event) {
-        _keyboardHeight = event;
+        setState(() {
+          _keyboardHeight = event;
+        });
       });
-    });
+    }
   }
 
   @override