Routable中的類

UPRouterOptions
UPRouter
Routable : UPRouter
RouterParams

Routable繼承自UPRouter，提供了一個單例方法：+ (instancetype)sharedRouter;保證一個生命周期中只使用同一個Routable對象琉雳。

Routable是核心類辆沦，實現(xiàn)了注冊、調(diào)用Open跳轉(zhuǎn)頁面等基本功能挤土。

注冊

[[Routable sharedRouter] map:@"user/:id" toController:[ViewController class]];這里的map是和后臺約定好的規(guī)則琴庵，user是host，后面接著你需要的參數(shù)，后臺返回給你字符串迷殿，就可以自己去跳轉(zhuǎn)和處理需要的參數(shù)了儿礼。注冊的格式為host/:param1/:param2

查看源代碼，他其實通過map值經(jīng)過UPRouterOptions類的轉(zhuǎn)換庆寺，把map的值當(dāng)做key映射到字典self.routes里蚊夫，value值是對應(yīng)的viewcontroller。

- (void)map:(NSString *)format toController:(Class)controllerClass withOptions:(UPRouterOptions *)options {
  if (!format) {
    @throw [NSException exceptionWithName:@"RouteNotProvided"
                                   reason:@"Route #format is not initialized"
                                 userInfo:nil];
    return;
  }
  if (!options) {
      // like [NSArray array]
    options = [UPRouterOptions routerOptions];
  }
  options.openClass = controllerClass;
  [self.routes setObject:options forKey:format];
}

頁面跳轉(zhuǎn)

注冊成功后就可以調(diào)用open方法進行頁面跳轉(zhuǎn)懦尝。

- (void)open:(NSString *)url animated:(BOOL)animated {
    
    // routerParams 包含ViewController 打開的方式  參數(shù)（openParams）
  RouterParams *params = [self routerParamsForUrl:url];
  UPRouterOptions *options = params.routerOptions;
  
    // callBack
  if (options.callback) {
    RouterOpenCallback callback = options.callback;
    callback([params controllerParams]);
    return;
  }
  
    
  if (!self.navigationController) {
    if (_ignoresExceptions) {
      return;
    }
    
    @throw [NSException exceptionWithName:@"NavigationControllerNotProvided"
                                   reason:@"Router#navigationController has not been set to a UINavigationController instance"
                                 userInfo:nil];
  }
  
  UIViewController *controller = [self controllerForRouterParams:params];
  
  if (self.navigationController.presentedViewController) {
    [self.navigationController dismissViewControllerAnimated:animated completion:nil];
  }
  
  if ([options isModal]) {
    if ([controller.class isSubclassOfClass:UINavigationController.class]) {
      [self.navigationController presentViewController:controller
                                              animated:animated
                                            completion:nil];
    }
    else {
      UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:controller];
      navigationController.modalPresentationStyle = controller.modalPresentationStyle;
      navigationController.modalTransitionStyle = controller.modalTransitionStyle;
      [self.navigationController presentViewController:navigationController
                                              animated:animated
                                            completion:nil];
    }
  }
  else if (options.shouldOpenAsRootViewController) {
    [self.navigationController setViewControllers:@[controller] animated:animated];
  }
  else {
    [self.navigationController pushViewController:controller animated:animated];
  }
}

首先根據(jù)url獲取對應(yīng)的RouterParams對象知纷，RouterParams包含RouterOptions包含openClass和跳轉(zhuǎn)方式等，openParams是需要傳遞的參數(shù)陵霉。

然后取到需要跳轉(zhuǎn)的ViewController琅轧，并且為參數(shù)賦值，設(shè)置跳轉(zhuǎn)形式動畫等撩匕。ViewController需要實現(xiàn)initWithRouterParams:方法或者allocWithRouterParams方法鹰晨，完成參數(shù)的傳遞。然后通過UPRouterOptions中的參數(shù)判斷跳轉(zhuǎn)方式完成頁面跳轉(zhuǎn)止毕。

如果是callBack

typedef void (^RouterOpenCallBack)(NSDictionary *params)