ios runtime 简单路由

1.协议

本路由通过协议方式实现

首先定义一个必须实现的方法

typedef void(^JCompletionHandler)(id _Nullable result,NSError *_Nullable error);
@protocol JRouteHandler
@required
+(void)handleRequestWithParameters:(nullable JParameters)parameters topViewController:(UIViewController *)topViewController completionHandler:(nullable JCompletionHandler)completionHandler;///< 路由找到路径d后调用该方法
@optional
+(NSString *)routePath; ///< 单路径 可以用这个方法d返回
+(NSArray *)multiRoutePath; ///< 多路径  可以用这个方法返回

@end

2.请求处理

建一个request类处理请求数据

-(instancetype)initWithPath:(NSString *)requestPath parameters:(nullable JParameters)parameters NS_DESIGNATED_INITIALIZER;
@property(nonatomic,strong,readonly)NSString *requestPath;
@property(nonatomic,strong,readonly,nullable)JParameters prts;///<参数

3.最后的路由

.h如下

typedef void(^JRouterUnhandledCallback)(JRouteRequest *request,UIViewController *topViewController);///<无法处理时的回调
@interface JRoute : NSObject
+(instancetype)shared;
-(void)handleRequest:(JRouteRequest*)request completionHandler:(nullable JCompletionHandler)completionHandler;
@property(nonatomic,copy,nullable)JRouterUnhandledCallback unhandledCallBack; /// < 协议方法
-(BOOL)canHandleRoutePath:(NSString *)routePath;/// < 是否可以处理某个路径
@end

topViewController为最初viewcontroller

static UIViewController *_sj_get_top_view_controller(){
    UIViewController *vc = UIApplication.sharedApplication.keyWindow.rootViewController;
    while ([vc isKindOfClass:[UINavigationController class]] || [vc isKindOfClass:[UITabBarController class]]) {
        if ([vc isKindOfClass:[UINavigationController class]]) {
            vc = [(UINavigationController *)vc topViewController];
        }
        if ([vc isKindOfClass:[UITabBarController class]]) {
            vc = [(UITabBarController*)vc selectedViewController];
        }
        if (vc.presentedViewController) {
            vc = vc.presentedViewController;
        }

    }
    return vc;
}

找到实现协议的类，并存储下来

-(instancetype)init{
    if (self = [super init]) {
        _handlersM = [NSMutableDictionary new];

        unsigned int img_count = 0;
        const char ** imgs = objc_copyImageNames(&img_count);
        const char *main = NSBundle.mainBundle.bundlePath.UTF8String;
        for (unsigned int i=0; i)cls routePath]] = cls;
                }else if ([(id)cls respondsToSelector:@selector(multiRoutePath)]){
                    for (NSString *rp in [(id)cls multiRoutePath]) {
                        _handlersM[rp] = cls;
                    }
                }
            }
            if (classes) {
                free(classes);
            }
        }
        if (imgs) {
            free(imgs);
        }
    }
    return self;

}

调用路由方法

-(void)handleRequest:(JRouteRequest *)request completionHandler:(JCompletionHandler)completionHandler{
    NSParameterAssert(request);
    if (!request) return;
    Class handler = _handlersM[request.requestPath];
    if (handler) {
        [handler handleRequestWithParameters:request.prts topViewController:_sj_get_top_view_controller() completionHandler:completionHandler];
    }
    else {
        printf("\n (-_-) Unhandled request:%s",request.description.UTF8String);
        if (_unhandledCallBack) {
            _unhandledCallBack(request,_sj_get_top_view_controller());
        }
    }
}

3.使用

首先在路由目标实现路径协议

+(NSString *)routePath{
    return @"xx";
}

起始点使用request

JRouteRequest *request = [[JRouteRequest alloc]initWithPath:@"xx" parameters:nil];
    [JRoute.shared handleRequest:request completionHandler:nil];

最后在目标实现方法

+ (void)handleRequestWithParameters:(nullable JParameters)parameters topViewController:(nonnull UIViewController *)topViewController completionHandler:(nullable JCompletionHandler)completionHandler {
    [topViewController presentViewController:[self new] animated:YES completion:nil];
}

demo地址