本次提交扩展了example的覆盖场景，增加了两个场景：

1.在Flutter页面中需要使用Navigator.push去打开新页面，而按返回键时调用Navigator.pop，这样可以达到不退出当前Activity的效果。

2.在打开新页面时FLutter和Native相互传递页面打开参数的场景。

本次的修改只在Android平台有效，后续iOS跟进，不过做法是一样的。

example/android/app/src/main/java/com/taobao/idlefish/flutterboostexample/FlutterPageActivity.java

@@ -2,6 +2,7 @@ package com.taobao.idlefish.flutterboostexample;
 
 import com.taobao.idlefish.flutterboost.containers.BoostFlutterActivity;
 
+import java.util.HashMap;
 import java.util.Map;
 
 import io.flutter.plugin.common.PluginRegistry;
@@ -14,15 +15,44 @@ public class FlutterPageActivity extends BoostFlutterActivity {
         GeneratedPluginRegistrant.registerWith(registry);
     }
 
+    /**
+     * 该方法返回当前Activity在Flutter层对应的name，
+     * 混合栈将会在flutter层根据这个名字，在注册的Route表中查找对应的Widget
+     *
+     * 在flutter层有注册函数：
+     *     FlutterBoost.singleton.registerPageBuilders({
+     *       'first': (pageName, params, _) => FirstRouteWidget(),
+     *       'second': (pageName, params, _) => SecondRouteWidget(),
+     *       ...
+     *     });
+     *
+     * 该方法中返回的就是注册的key：first , second
+     *
+     * @return
+     */
     @Override
     public String getContainerName() {
         return "flutterPage";
     }
 
+    /**
+     * 该方法返回的参数将会传递给上层的flutter对应的Widget
+     *
+     * 在flutter层有注册函数：
+     *    FlutterBoost.singleton.registerPageBuilders({
+     *       'first': (pageName, params, _) => FirstRouteWidget(),
+     *       'second': (pageName, params, _) => SecondRouteWidget(),
+     *        ...
+     *     });
+     *
+     * 该方法返回的参数就会封装成上面的params
+     *
+     * @return
+     */
     @Override
     public Map getContainerParams() {
-        return null;
+        Map<String,String> params = new HashMap<>();
+        params.put("aaa","bbb");
+        return params;
     }
-
-
 }

example/android/app/src/main/java/com/taobao/idlefish/flutterboostexample/MyApplication.java

@@ -6,6 +6,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.text.TextUtils;
 
+import com.taobao.idlefish.flutterboost.Debuger;
 import com.taobao.idlefish.flutterboost.FlutterBoostPlugin;
 import com.taobao.idlefish.flutterboost.interfaces.IPlatform;
 
@@ -38,8 +39,22 @@ public class MyApplication extends FlutterApplication {
                 return true;
             }
 
+            /**
+             * 如果flutter想打开一个本地页面，将会回调这个方法，页面参数将会拼接在url中
+             *
+             * 例如：sample://nativePage?aaa=bbb
+             *
+             * 参数就是类似 aaa=bbb 这样的键值对
+             *
+             * @param context
+             * @param url
+             * @param requestCode
+             * @return
+             */
             @Override
             public boolean startActivity(Context context, String url, int requestCode) {
+                Debuger.log("startActivity url="+url);
+
                 return PageRouter.openPageByUrl(context,url,requestCode);
             }
 

example/lib/main.dart

@@ -20,8 +20,15 @@ class _MyAppState extends State<MyApp> {
       'first': (pageName, params, _) => FirstRouteWidget(),
       'second': (pageName, params, _) => SecondRouteWidget(),
       'tab': (pageName, params, _) => TabRouteWidget(),
-      'flutterPage': (pageName, params, _) => FlutterRouteWidget(),
       'flutterFragment': (pageName, params, _) => FragmentRouteWidget(params),
+
+      ///可以在native层通过 getContainerParams 来传递参数
+      'flutterPage': (pageName, params, _){
+
+        print("flutterPage params:$params");
+
+        return FlutterRouteWidget();
+      },
     });
 
     FlutterBoost.handleOnStartPage();

example/lib/simple_page_widgets.dart

@@ -60,6 +60,10 @@ class TabRouteWidget extends StatelessWidget {
 }
 
 class FlutterRouteWidget extends StatelessWidget {
+  final String message;
+
+  FlutterRouteWidget({this.message});
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -72,7 +76,7 @@ class FlutterRouteWidget extends StatelessWidget {
           Container(
             margin: const EdgeInsets.only(top: 80.0),
             child: Text(
-              "This is a flutter activity",
+              message ?? "This is a flutter activity",
               style: TextStyle(fontSize: 28.0, color: Colors.blue),
             ),
             alignment: AlignmentDirectional.center,
@@ -87,8 +91,13 @@ class FlutterRouteWidget extends StatelessWidget {
                   'open native page',
                   style: TextStyle(fontSize: 22.0, color: Colors.black),
                 )),
+
+            ///后面的参数会在native的IPlatform.startActivity方法回调中拼接到url的query部分。
+            ///例如：sample://nativePage?aaa=bbb
             onTap: () =>
-                FlutterBoost.singleton.openPage("sample://nativePage", {}),
+                FlutterBoost.singleton.openPage("sample://nativePage", {
+                  "query": {"aaa": "bbb"}
+                }),
           ),
           InkWell(
             child: Container(
@@ -99,8 +108,27 @@ class FlutterRouteWidget extends StatelessWidget {
                   'open flutter page',
                   style: TextStyle(fontSize: 22.0, color: Colors.black),
                 )),
+
+            ///后面的参数会在native的IPlatform.startActivity方法回调中拼接到url的query部分。
+            ///例如：sample://nativePage?aaa=bbb
             onTap: () =>
-                FlutterBoost.singleton.openPage("sample://flutterPage", {}),
+                FlutterBoost.singleton.openPage("sample://flutterPage", {
+                  "query": {"aaa": "bbb"}
+                }),
+          ),
+          InkWell(
+            child: Container(
+                padding: const EdgeInsets.all(8.0),
+                margin: const EdgeInsets.all(8.0),
+                color: Colors.yellow,
+                child: Text(
+                  'push flutter widget',
+                  style: TextStyle(fontSize: 22.0, color: Colors.black),
+                )),
+            onTap: () {
+              Navigator.push(
+                  context, MaterialPageRoute(builder: (_) => PushWidget()));
+            },
           ),
           InkWell(
             child: Container(
@@ -192,3 +220,48 @@ class FragmentRouteWidget extends StatelessWidget {
     );
   }
 }
+
+class PushWidget extends StatefulWidget {
+  @override
+  _PushWidgetState createState() => _PushWidgetState();
+}
+
+class _PushWidgetState extends State<PushWidget> {
+  VoidCallback _backPressedListenerUnsub;
+
+  @override
+  void initState() {
+    // TODO: implement initState
+    super.initState();
+  }
+
+  @override
+  void didChangeDependencies() {
+    // TODO: implement didChangeDependencies
+    super.didChangeDependencies();
+
+    if (_backPressedListenerUnsub == null) {
+      _backPressedListenerUnsub =
+          BoostContainer.of(context).addBackPressedListener(() {
+        if (BoostContainer.of(context).onstage &&
+            ModalRoute.of(context).isCurrent) {
+          Navigator.pop(context);
+        }
+      });
+    }
+  }
+
+  @override
+  void dispose() {
+    // TODO: implement dispose
+    super.dispose();
+    _backPressedListenerUnsub?.call();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return FlutterRouteWidget(
+      message: "pushed Widget",
+    );
+  }
+}