FlutterBoost介绍
咸鱼Flutter Boost介绍
Flutter Boost Github
混合开发环境搭建
原生Android集成Flutter混合开发
Flutter SDK版本:
v1.9.1
Flutter Boost 版本:
flutter_boost: ^0.1.63
FlutterBoost是以插件方式的引入到我们的native项目工程的。
混合开发流程可以参考:
原生Android集成Flutter混合开发
在flutter_boost_module项目的pubspec.yaml文件中添加依赖插件配置
dependencies:
flutter:
sdk: flutter
flutter_boost: ^0.1.63
配置完成后下载依赖插件到本地
flutter packages get
在native原生项目中rebuild工程,即可引入flutter boost插件,引入flutter boost后的代码结构。其中的amap_base_map是引入了地图插件才显示的,如果没有引入地图插件则不会出现该文件。
在native的项目中,在app目录下的build.gradle中添加flutter_boost项目依赖
implementation project(':flutter_boost')
在Flutter项目中创建两个测试页面Widget:FirstRouteWidget和SecondRouteWidget。代码参考了flutter_boost的测试代码。
(1)关于onPressed里面的方法调用,其实就是调用flutter_boost的api进行页面的跳转和传递参数。
class FirstRouteWidget extends StatelessWidget {
static const KEY_FLUTTER_BOOST_FIRST_ROUTE = "flutterbus://flutterWidget_FirstPage";
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('First Route'),
),
body: Center(
child: RaisedButton(
child: Text('open amap widget'),
onPressed: () {
// print("open second page!");
FlutterBoost.singleton.open("flutterbus://flutternativePage", urlParams: {"test": "flutter to flutter "})
.then((Map value) {print(
"call me when page is finished. did recieve second route result $value");});
// BoostContainerSettings settings = BoostContainer.of(context).settings;
// FlutterBoost.singleton.close(settings.uniqueId, result: {"result": "data from second"});
},
),
),
);
}
}
class SecondRouteWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Second Route"),
),
body: Center(
child: RaisedButton(
onPressed: () {
// Navigate back to first route when tapped.
BoostContainerSettings settings =
BoostContainer.of(context).settings;
FlutterBoost.singleton.close(settings.uniqueId,
result: {"result": "data from second"});
},
child: Text('Go back with result!'),
),
),
);
}
}
在main.dart中注册注册这两个页面route。
(1)在build方法中初始化Flutter Boost
(2)在initState中注册需要native启动的route。这里的pageName一定要和native启动时配置的一致,否则会找不到对应route。
class _MyAppState extends State {
@override
void initState() {
super.initState();
FlutterBoost.singleton.registerPageBuilders({
//fisrt widget
FirstRouteWidget.KEY_FLUTTER_BOOST_FIRST_ROUTE: (pageName, params, _) {
debugPrint("params :${params.toString()}");
return FirstRouteWidget();
},
//second widget
'flutterbus://flutterSecondPage': (pageName, params, _) {
debugPrint("params :${params.toString()}");
return SecondRouteWidget();
},
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Boost example',
//初始化FlutterBoost
builder: FlutterBoost.init(postPush: _onRoutePushed),
home: Container());
}
void _onRoutePushed(
String pageName, String uniqueId, Map params, Route route, Future _) {
debugPrint("pageName :${pageName}" + "params :${params.toString()}");
}
}
初始化flutter引擎。
(1)Flutter引擎初始化,代码参考Flutter_boost demo.
(2)INativeRouter接口需要注意,不仅通过flutter启动native页面会调用该方法,而且通过flutter会用flutter页面,也会执行该方法。
(3)在Application中调用FlutterBootManager.init()方法完成初始化。
(4)NativePageRouter在启动route会用到。可以自行封装。
object FlutterBootManager {
fun init(app: Application) {
/**
* 不仅打开Native页面会执行,在Flutter页面打开Flutter widget也会执行该方法
**/
val router = INativeRouter { context, url, urlParams, requestCode, exts ->
val assembleUrl = Utils.assembleUrl(url, urlParams)
Timber.e("native open :${url} ${urlParams}")
NativePageRouter.openPageByUrl(context, assembleUrl, requestCode)
}
val pluginsRegister = object : FlutterBoost.BoostPluginsRegister {
override fun registerPlugins(mRegistry: PluginRegistry?) {
GeneratedPluginRegistrant.registerWith(mRegistry)
TextPlatformViewPlugin.register(mRegistry?.registrarFor("TextPlatformViewPlugin"))
}
}
val platform = FlutterBoost.ConfigBuilder(app, router)
.isDebug(BuildConfig.DEBUG)
.whenEngineStart(FlutterBoost.ConfigBuilder.ANY_ACTIVITY_CREATED)
.renderMode(FlutterView.RenderMode.texture)
.pluginsRegister(pluginsRegister)
.build()
FlutterBoost.instance().init(platform)
}
}
配置Flutter页面对应的Native容器。
页面路由跳转我把它分成了三种情况,下面说说每中情况的代码实现。
一、native启动flutter
(1)不携带参数:
在native测可以通过BoostFlutterActivity通过构建者模式构建一个intent。BoostFlutterActivity要注册在manifest文件中。
companion object {
const val FLUTTER_FIRST_PAGE_URL = "flutterbus://flutterWidget_FirstPage"
}
override fun openFlutterWidget(context: Context, params: HashMap?): Boolean {
try {
val intent = BoostFlutterActivity.withNewEngine().url(FLUTTER_FIRST_PAGE_URL)
.backgroundMode(BoostFlutterActivity.BackgroundMode.opaque).build(context)
context.startActivity(intent)
return true
} catch (e: Exception) {
return false
}
}
在flutter module中打印出请求的url,和params。
FirstRouteWidget.KEY_FLUTTER_BOOST_FIRST_ROUTE: (pageName, params, _) {
debugPrint("params :${params.toString()}");
return FirstRouteWidget();
}
(2)携带请求参数
flutter module代码不变。
companion object {
const val FLUTTER_FIRST_PAGE_URL = "flutterbus://flutterWidget_FirstPage"
}
override fun openFlutterWidget(context: Context, params: HashMap?): Boolean {
try {
var params = mutableMapOf()
params["str"] = "flutter boost"
params["in"] = 1
val intent = BoostFlutterActivity.withNewEngine().url(FLUTTER_FIRST_PAGE_URL).params(params)
.backgroundMode(BoostFlutterActivity.BackgroundMode.opaque).build(context)
context.startActivity(intent)
return true
} catch (e: Exception) {
return false
}
}
(3)获取flutter的处理结果。
在native测通过startActivityForResult启动flutter container。
override fun openFlutterWidgetForResult(activity: BaseActivity, params: HashMap?, requestCode: Int): Boolean {
try {
var params = mutableMapOf()
params["str"] = "flutter boost"
params["in"] = 1
val intent = BoostFlutterActivity.withNewEngine().url(FLUTTER_FIRST_PAGE_URL).params(params)
.backgroundMode(BoostFlutterActivity.BackgroundMode.opaque).build(activity)
activity.startActivityForResult(intent, requestCode)
return true
} catch (e: Exception) {
return false
}
}
}
在当前activity的onActivityResult获取请求结果
注意这里的KEY值,这个值是定值,不可修改。并且在flutter获取native的返回值是也需要用到该值。
REQUEST_CODE -> {
Timber.e("flutter data :"+data?.extras?.get(IFlutterViewContainer.RESULT_KEY))
}
在flutter module通过FlutterBoost的close方法,把处理结果返回给上一个页面。
BoostContainerSettings settings = BoostContainer.of(context).settings;
FlutterBoost.singleton.close(settings.uniqueId, result: {"result": "data from second"});
最终native获取的返回值格式:
flutter data :{result=data from second}
二、flutter启动flutter
(1)直接启动,不携带参数
注意;这里还需要在native层进行实现,才能最终启动flutter route,因为flutter route需要一个native容器。
FlutterBoost.singleton.open("flutterbus://flutterSecondPage");
在native的FlutterBootManager中有个INativeRouter接口的实现类,在给INativeRouter的openContainer方法中,能获取到启动的url,请求参数urlParams、和requestCode和当前的activity的上下问context。
在openContainer方法中,在调用启动**“native启动flutter”**的相关方法,启动flutter route。
例如:
val intent = BoostFlutterActivity.withNewEngine().url(NATIVE_FIRST_PAGE_URL)
.backgroundMode(BoostFlutterActivity.BackgroundMode.opaque).build(context)
if(context is Activity){
(context as Activity).startActivityForResult(intent,0x13)
}
(2)携带参数启动
FlutterBoost.singleton.open("flutterbus://flutterSecondPage", urlParams: {"test": "flutter to flutter "})
(3)获取返回值
在first route通过如下代码启动second route
FlutterBoost.singleton.open("flutterbus://flutternativePage", urlParams: {"test": "flutter to flutter "})
.then((Map value) {print(
"call me when page is finished. did recieve second route result $value");});
在second通过如下代码关闭当前页面,并返回处理的数据
BoostContainerSettings settings =
BoostContainer.of(context).settings;
FlutterBoost.singleton.close(settings.uniqueId,
result: {"result": "data from second"});
三、flutter 启动native页面
(1)直接启动,不带参数
FlutterBoost.singleton.open("flutterbus://flutternativePage");
在native的FlutterBootManager中有个INativeRouter接口的实现类,在给INativeRouter的openContainer方法中,能获取到启动的url,请求参数urlParams、和requestCode和当前的activity的上下问context。
在openContainer方法中,在调用启动startActivity的相关方法,启动native route。
例如
var intent = Intent(context,FlutterOpenNativeTestActivity::class.java)
if(context is Activity){
(context as Activity).startActivityForResult(intent,requestCode)
}
(2)携带请求参数
在INativeRouter的openContainer方法,可以获取到请求的参数。
这里的请求最终会执行到native的INativeRouter 实现类。
FlutterBoost.singleton.open("flutterbus://flutternativePage", urlParams: {"test": "flutter to flutter "})
(3)获取返回值
flutter 的代码实现
FlutterBoost.singleton.open("flutterbus://flutternativePage", urlParams: {"test": "flutter to flutter "})
.then((Map value) {print(
"call me when page is finished. did recieve second route result $value");});
native的代码实现
注意点:putExtra的key是定值,并且值只能是map。
close_btn.setOnClickListener{
var map = mutableMapOf()
map.put("native","test native")
intent.putExtra(IFlutterViewContainer.RESULT_KEY,(map as Serializable))
setResult(Activity.RESULT_OK,intent)
finish()
}
四、native启动native
和原生开发没有区别。
PS:主要点不是flutter_boost的API使用,而是获取返回值的阅读官方demo遇到的坑,demo写的不够全面,一些常见的场景都没有覆盖。