上一篇文章介绍了如何集成Flutter_Boost，本篇将详细介绍flutter如何与原生进行交互。
首先给出文章demo，具体代码可作参考。
一：flutter_module项目使用FlutterBoost进行路由配置
import 'package:flutter/material.dart';
import 'package:flutter_boost/flutter_boost.dart';
import 'simple_page_widgets.dart';
void main() {
run App(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
@override
void initState() {
super.initState();
FlutterBoost.singleton.registerPageBuilders({
'first': (pageName, params, _) => FirstRouteWidget(),
'second': (pageName, params, _) => SecondRouteWidget(),
'flutterPage': (pageName, params, _) {
print("flutterPage params:$params");
return FlutterRouteWidget(params:params);
},
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter example',
builder: FlutterBoost.init(postPush: _onRoutePushed),
home: Container());
}
void _onRoutePushed(
String pageName, String uniqueId, Map params, Route route, Future _) {
}
}
这里首先在Widget builder中初始化了FlutterBoost，然后在initState方法中通过FlutterBoost为三个页面注册了路由，这里注册的路由是原生与flutter通用的，这个后面可以体现。
二：在Flutter页面路由中使用FlutterBoost跳转
总结在Flutter中有以下几种跳转方式：
1.Flutter=>Flutter（使用Flutter自己的路由）
Navigator.push(context, MaterialPageRoute(builder: (_) => FirstRouteWidget()));
以下三种跳转方式，都是通过FlutterBoost进行跳转，使用的是同一个方法，只是场景有所不同
FlutterBoost.singleton.open( String url,{Map<dynamic,dynamic> urlParams,Map<dynamic,dynamic> exts)
参数分别为：页面名称，通信传参，扩展参数。对应相应跳转方式使用如下：
2.Flutter=>Flutter（使用原生的navigationController）
例：first页面打开路由名称为second页面，传参为{"query": “aaa”}，扩展参数中可以添加一些特殊数据，这里添加了{"animated": true}，在原生中会解析为带动画跳转
FlutterBoost.singleton.open( "second",urlParams: {"query": "aaa"}, exts: {"animated": true})
3.Flutter=>原生（push）
例：first页面打开原生NativeViewController页面，拼接native将在原生项目中解析为跳转原生页面，拼接push表明跳转方式。
FlutterBoost.singleton.open( "native_push_NativeViewController",urlParams: {"query": "aaa"}, exts: {"animated": true})
4.Flutter=>原生（present）
同上，使用present跳转方式。
FlutterBoost.singleton.open( "native_present_NativeViewController",urlParams: {"query": "aaa"}, exts: {"animated": true})
另外，Flutter关闭或返回上级页面使用的是close方法，分为两种
1.关闭当前页面
FlutterBoost.singleton.closeCurrent(result: {}, exts: {});
2.通过id关闭指定页面
FlutterBoost.singleton.close('id', result: {}, exts: {});
三：原生项目中配置路由通信
import Foundation
//实现FLBPlatform协议方法，flutter项目和原生项目使用FlutterBoost进行的跳转都会通过该类进行处理
class PlatformRouterImp: NSObject, FLBPlatform {
//处理打开原生页面逻辑
func openNative(_ url: String, urlParams: [AnyHashable : Any], exts: [AnyHashable : Any], completion: @escaping (Bool) -> Void) {
var animated = false
if exts["animated"] != nil{
animated = exts["animated"] as! Bool
}
//与flutter端约定跳转原生的url为三段式结构native_method_name
let urlArr = url.components(separatedBy: "_")
if urlArr.count == 3 {
//通过类名找到相应页面
let cls : AnyClass? = NSClassFromString("TestWithFlutter." + urlArr[2])
//该项目中的vc都继承于BaseViewController，加了一个params用来接收Flutter传过来的参数，另有方案的话改为UIViewController即可。
if let clsType = cls as? BaseViewController.Type {
let targetVC = clsType.init()
targetVC.params = urlParams
if urlArr[1] == "push" {
self.navigationController().pushViewController(targetVC, animated: animated)
completion(true)
} else if urlArr[1] == "present" {
let navVC = UINavigationController(rootViewController: targetVC)
self.navigationController().present(navVC, animated: animated) {
completion(true)
}
}
}
}
}
//FlutterBoost的open方法会在这里进行处理
func open(_ url: String, urlParams: [AnyHashable : Any], exts: [AnyHashable : Any], completion: @escaping (Bool) -> Void) {
if url.prefix(6) == "native" {//约定前面字符为native时跳转原生页面
openNative(url, urlParams: urlParams, exts: exts, completion: completion)
} else {//否则打开Flutter页面
var animated = false
if exts["animated"] != nil{
animated = exts["animated"] as! Bool
}
let vc = FLBFlutterViewContainer.init()
vc.setName(url, params: urlParams)
self.navigationController().pushViewController(vc, animated: animated)
completion(true)
}
}
//FlutterBoost的present方法会在这里进行处理，Flutter项目中不分present打开方式，都会走open方法
func present(_ url: String, urlParams: [AnyHashable : Any], exts: [AnyHashable : Any], completion: @escaping (Bool) -> Void) {
//直接present出的navVC，会导致flutter路由中uniqueid混乱，有待研究
// var animated = false
// if exts["animated"] != nil{
// animated = exts["animated"] as! Bool
// }
let vc = FLBFlutterViewContainer.init()
vc.setName(url, params: urlParams)
let navVC = UINavigationController(rootViewController: vc)
navVC.modalPresentationStyle = .fullScreen
let delegate = UIApplication.shared.delegate as! AppDelegate
delegate.window?.rootViewController = navVC
// navigationController().present(navVC, animated: animated) {
// completion(true)
// }
}
//FlutterBoost的close方法会在这里进行处理
func close(_ uid: String, result: [AnyHashable : Any], exts: [AnyHashable : Any], completion: @escaping (Bool) -> Void) {
var animated = false;
if exts["animated"] != nil{
animated = exts["animated"] as! Bool
}
let presentedVC = self.navigationController().presentedViewController
let vc = presentedVC as? FLBFlutterViewContainer
if vc?.uniqueIDString() == uid {
vc?.dismiss(animated: animated, completion: {
completion(true)
})
}else{
self.navigationController().popViewController(animated: animated)
}
}
//获取应用的navigationController，用来进行跳转
func navigationController() -> UINavigationController {
let delegate = UIApplication.shared.delegate as! AppDelegate
let navigationController = delegate.window?.rootViewController as! UINavigationController
return navigationController
}
}
四：在AppDelegate中初始化FlutterBoost
import UIKit
import Flutter
@UIApplicationMain
class AppDelegate: FlutterAppDelegate {
override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
let router = PlatformRouterImp.init();
FlutterBoostPlugin.sharedInstance().startFlutter(with: router, onStart: { (engine) in
});
self.window = UIWindow.init(frame: UIScreen.main.bounds)
let viewController = ViewController.init()
let navi = UINavigationController.init(rootViewController: viewController)
self.window.rootViewController = navi
self.window.makeKeyAndVisible()
return true
}
}
五：原生使用FlutterBoost进行跳转
例：原生跳转Flutter路由名为flutterPage的页面
FlutterBoostPlugin.open("flutterPage", urlParams:["query":"aaa"], exts: ["animated":true], onPageFinished: { (_ result:Any?) in
print(String(format:"call me when page finished, and your result is:%@", result as! CVarArg));
}) { (f:Bool) in
print(String(format:"page is opened"));
}
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