路由单独模块化

目录
|-pages
|-routes
|—Routes.dart

// routes/Routes.dart
import 'package:flutter/material.dart';

import '../pages/Tabs.dart';
import '../pages/Form.dart';
import '../pages/Search.dart';
import '../pages/Product.dart';
import '../pages/ProductInfo.dart';

//配置路由
final routes={
'/':(context)=>Tabs(),
'/form':(context)=>FormPage(),
'/product':(context)=>ProductPage(),
'/productinfo':(context,{arguments})=>ProductInfoPage(arguments:arguments),
'/search':(context,{arguments})=>SearchPage(arguments:arguments),
};

//固定写法
var onGenerateRoute=(RouteSettings settings) {
// 统一处理
final String name = settings.name;
final Function pageContentBuilder = routes[name];
if (pageContentBuilder != null) {
if (settings.arguments != null) {
final Route route = MaterialPageRoute(
builder: (context) =>
pageContentBuilder(context, arguments: settings.arguments));
return route;
}else{
final Route route = MaterialPageRoute(
builder: (context) =>
pageContentBuilder(context));
return route;
}
}
};
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