一:原生页面---->跳转flutter页面（方式1)
1. AndroidManifest.[xml]注册 FlutterActivity
<activity
android:name="io.flutter.embedding.android.FlutterActivity"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:theme="@style/Theme.AppCompat"
android:windowSoftInputMode="adjustResize" />
2.startActivity(new Intent(MainActivity.this, FlutterActivity.class));（FlutterActivity指向的是flutter系统main.dart页面)
这种方式原生传参flutter参照:https://zhuanlan.zhihu.com/p/66081592
二Android跳转到指定的Flutter页面啊（方式2)
通过路由来跳转，需要先声明路由。MeterialApp中声明路由：
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
//这种方式不能传递参数，主要是方便原生调用
routes: <String, WidgetBuilder>{
"login": (context) => FromPage(),
},
home: MyHomePage(title: "Flutter Demo"),
);
}
}
Android部分通过指定路由跳转:
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn2:
startActivity(FlutterActivity
.withNewEngine()
.initialRoute("login")
// .initialRoute("old_password")
// .initialRoute("code_password")
.build(MainActivity.this));
break;
}
}
class FromPage extends StatelessWidget{
String title;
//dart:
FromPage({this.title='默认From'});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(this.title), //在此处，将传递的数据进行引用
),
body: ListView(
children: <Widget>[
ListTile(
title: Text('我是表单'),
),
ListTile(
title: Text('我是表单'),
),
ListTile(
title: Text('我是表单'),
),
],
),
);
}
},
方式三:使用缓存的FlutterEngine跳转到指定的Flutter页面（解决跳转Flutter页面的卡顿）
在Application中设置好要缓存的页面
public class App extends Application {
FlutterEngine flutterEngine;// 使用缓存的FlutterEngine
@Override
public void onCreate() {
super.onCreate();
// 实例化FlutterEngine
flutterEngine = new FlutterEngine(this);
// 设置要缓存的页面
flutterEngine.getNavigationChannel().setInitialRoute("login");//这里login和Dart保持一致
// 开始执行Dart代码以预热FlutterEngine
flutterEngine.getDartExecutor().executeDartEntrypoint(DartExecutor.DartEntrypoint.createDefault());
// 缓存FlutterActivity要使用的FlutterEngine
FlutterEngineCache.getInstance().put("my_engine_id", flutterEngine);
}
@Override
public void onTerminate() {
//销毁flutter引擎
flutterEngine.destroy();
super.onTerminate();
}
}
原生页面跳转
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn3:
startActivity(FlutterActivity
.withCachedEngine("my_engine_id")
.build(MainActivity.this));
break;
}
}
**Dart页面**
import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:flutter_module/user_login_page.dart';
import 'package:flutter_module/user_update_password_page_for_code.dart';
import 'package:flutter_module/user_update_password_page_for_old.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
routes: <String, WidgetBuilder>{
"login": (context) => UserLoginPage()这里login和上面Application 保持一致
},
// home: MyHomePage(title: "Flutter Demo"),
home: _widgetForRoute(window.defaultRouteName),//根据传过来的值打开相应页面
);
}
}
Widget _widgetForRoute(String route) {
switch (route) {
case 'login':
return Center(
child: UserLoginPage(),
);
case 'old_password':
return Center(
UserUpdatePasswordForOldPage()
);
case 'code_password':
return Center(
UserUpdatePasswordForCodePage()
);
default:
return Center(
child: MyHomePage(title: "123456"),
);
}
}
