iOS解耦与模块化之路 -路由的构建使用

上一篇中介绍了项目解耦中的构建Spec私有库，这篇记录一下本次模块化之路的另一个重要环节，构建路由。

路由，可以理解为一个模块的调度中心。我们写项目时，经常有业务模块与业务模块、业务模块与功能模块之间的相互调用，如果在使用的时候直接导头引用，做模块间的随意跳转，这样会产生很多耦合与依赖，而我们构建路由的目的，就是要去掉这些耦合，做到模块间互不依赖，不相影响。

先看看目前项目的路由构建：

下面开始一步一步地构建路由

一、路由注册

// 路由的发起+ (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id> *)options {    if ([url.absoluteString containsString:kOrderApplicationScheme]){        return [[JLRoutes routesForScheme:kOrderApplicationScheme] routeURL:url];    }    return NO;}// 路由的注册+ (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    [[JLRoutes routesForScheme:kOrderApplicationScheme] addRoute:@"order/puchase" handler:^BOOL(NSDictionary<NSString *,id> * _Nonnull parameters) {        LBOrderWorkbenchPageViewController *vc= [[LBOrderWorkbenchPageViewController alloc] init];        [[UIApplication getCurrentViewController].navigationController pushViewController:vc animated:YES];        return YES;    }];    [[JLRoutes routesForScheme:kOrderApplicationScheme] addRoute:@"order/supply" handler:^BOOL(NSDictionary<NSString *,id> * _Nonnull parameters) {        LBSupplyWorkbenchPageViewController *vc= [[LBSupplyWorkbenchPageViewController alloc] init];        [[UIApplication getCurrentViewController].navigationController pushViewController:vc animated:YES];        return YES;    }];    return NO;}

二、路由的发起

#define LBOrderOpen(n) NSString *url = [kOrderApplicationScheme stringByAppendingString:n];\[[UIApplication sharedApplication]openURL:[NSURL URLWithString:url]];\

        case 1:        {            // 采购            LBOrderOpen(@"order/puchase");        }            break;                case 5:        {            // 供应            LBOrderOpen(@"order/supply");        }            break;

三、中心调度

在项目的AppDelegate里面进行设置注册与发起路由之后的调度

    // 设置注册- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    [LBBeeApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBUserApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBHomeApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBPayApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBResourceApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBShareApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBUnionNumberApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBRecruitApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBMessageApplicationLifeCycle application:application didFinishLaunchingWithOptions:launchOptions];    [LBOrderApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBCategoryApplication application:application didFinishLaunchingWithOptions:launchOptions];    [LBTenderApplication application:application didFinishLaunchingWithOptions:launchOptions];    ...    return YES;}   // 中心调度   - (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id> *)options{    BOOL result;    result = [LBUserApplication application:app openURL:url options:options];    result = result ? :[LBBeeApplication application:app openURL:url options:options];    result = result ? :[LBResourceApplication application:app openURL:url options:options];    result = result ? :[LBShareApplication application:app openURL:url options:options];    result = result ? :[LBUnionNumberApplication application:app openURL:url options:options];    result = result ? :[LBOrderApplication application:app openURL:url options:options];    result = result ? :[LBRecruitApplication application:app openURL:url options:options];    result = result ? :[LBCategoryApplication application:app openURL:url options:options];    result = result ? :[LBTenderApplication application:app openURL:url options:options];    result = result ? :[LBHomeApplication application:app openURL:url options:options];    result = result ? :[LBPayApplication application:app openURL:url options:options];    if (!result) {        // url没人处理，则处理其他非业务模块的url    }    return result;}

四、传参与回调

我们在做路由的时候，经常会碰到需要传值与返参的操作：

• 入参

LBOrderOpen(@"order/puchase/1001/5001");

 [[JLRoutes routesForScheme:kOrderApplicationScheme] addRoute:@"order/puchase/:bsId/:bsCode" handler:^BOOL(NSDictionary<NSString *,id> * _Nonnull parameters) {        LBOrderWorkbenchPageViewController *vc= [[LBOrderWorkbenchPageViewController alloc] init];        vc.bsId = parameters[@"bsId"];        vc.bsCode = parameters[@"bsCode"];        [[UIApplication getCurrentViewController].navigationController pushViewController:vc animated:YES];        return YES;    }];

• 回调

[LBCategoryApplication openURL:@"category/selected/5/1/0" callBack:^(NSArray<NSDictionary *> *resultArray) {}];

+ (void)openURL:(NSString *)urlStr callBack:(LBCategoryApplicationCallBack)callBack{    [[self shareApplication] setCallBack:callBack];    LBCategoryOpen(urlStr);}

这里介绍的是一种思路，当然肯定有更好的思路去做这件事，我们可以进行再探讨，毕竟任何项目的构建都会不断的在完善。

注：

1. 模块间所有供外部使用的功能和页面，都应该制作成路由
2. 依赖关系是路由中需要重点考虑的，写代码时降低耦合性，可以使项目间的调度变得清晰
3. 路由集成的思想可以仿照写SDK，比如一个公司有几个app，写一个支付中心或者是消息IM推送中心，它可以无条件的使用在不用的app当中
4. 集成路由的前提还是模块化完成，将组件写成Spec私有库就是模块化前有效的工作

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