没有选择器的类方法.即使Xcode能识别这个方法

Question

我有3个文件:m, cgoth .h, cgoth。M(取自https://github.com/guicocoa/cocoa-oauth)

在主要

。我调用(在main方法中):

 [GCOAuth URLRequestForPath:@"websites" 
  HTTPMethod:@"GET" 
  parameters:nil scheme:@"https" 
  host:@"blah"           
  consumerKey:CONSUMER_KEY 
  consumerSecret:CONSUMER_SECRET 
  accessToken:accessToken 
  tokenSecret:tokenSecret];

我得到的错误是，它说没有类方法的选择器URLRequestforPath... .

在我导入到main的GCOAuth.h中。M，是声明:

 + (NSURLRequest *)URLRequestForPath:(NSString *)path
                     HTTPMethod:(NSString *)HTTPMethod
                     parameters:(NSDictionary *)parameters
                         scheme:(NSString *)scheme
                           host:(NSString *)host
                    consumerKey:(NSString *)consumerKey
                 consumerSecret:(NSString *)consumerSecret
                    accessToken:(NSString *)accessToken
                    tokenSecret:(NSString *)tokenSecret;

实现在GCOAuth.m中。

我已经试过了:

[[GCOAuth alloc] URLRequestForPath:@"websites" 
  HTTPMethod:@"GET" 
  parameters:nil scheme:@"https" 
  host:@"blah"           
  consumerKey:CONSUMER_KEY 
  consumerSecret:CONSUMER_SECRET 
  accessToken:accessToken 
  tokenSecret:tokenSecret];

但我只是得到错误:没有可见的@interface声明选择器URLRequestForPath... .

我看不出我做错了什么。如果没有selector的类方法，为什么Xcode的自动完成提供这个方法给我使用?

EDIT(这是CGOAuth.m的实现):

 + (NSURLRequest *)URLRequestForPath:(NSString *)path
                     HTTPMethod:(NSString *)HTTPMethod
                     parameters:(NSDictionary *)parameters
                         scheme:(NSString *)scheme
                           host:(NSString *)host
                    consumerKey:(NSString *)consumerKey
                 consumerSecret:(NSString *)consumerSecret
                    accessToken:(NSString *)accessToken
                    tokenSecret:(NSString *)tokenSecret {
// check parameters
if (host == nil || path == nil) { return nil; }
// create object
GCOAuth *oauth = [[GCOAuth alloc] initWithConsumerKey:consumerKey
                                       consumerSecret:consumerSecret
                                          accessToken:accessToken
                                          tokenSecret:tokenSecret];
oauth.HTTPMethod = HTTPMethod;
oauth.requestParameters = parameters;
NSString *encodedPath = [path stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *URLString = [NSString stringWithFormat:@"%@://%@%@", scheme, host, encodedPath];
if ([[HTTPMethod uppercaseString] isEqualToString:@"GET"]) {
    // Handle GET
    if ([oauth.requestParameters count]) {
        NSString *query = [GCOAuth queryStringFromParameters:oauth.requestParameters];
        URLString = [NSString stringWithFormat:@"%@?%@", URLString, query];
    }
}
oauth.URL = [NSURL URLWithString:URLString];
NSMutableURLRequest *request = [oauth request];
if (![[HTTPMethod uppercaseString] isEqualToString:@"GET"] && [oauth.requestParameters count]) {
    // Add the parameters to the request body for non GET requests
    NSString *query = [GCOAuth queryStringFromParameters:oauth.requestParameters];
    NSData *data = [query dataUsingEncoding:NSUTF8StringEncoding];
    NSString *length = [NSString stringWithFormat:@"%lu", (unsigned long)[data length]];
    [request setHTTPBody:data];
    [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
    [request setValue:length forHTTPHeaderField:@"Content-Length"];
}
// return
return request;

}

这里有一些我尝试过的东西，但没有工作，重新启动Xcode和做一个干净的。

我知道Xcode可以识别这个方法，因为(a)代码完成会给我前面提到的方法的名字，(b)它会出现在侧边栏的层次视图中(在左边)。时间是至关重要的!

Answer 1

main类的CGOAuth.h导入了吗?检查CGOAuth类是否存在于项目构建阶段