我有 3 个文件:main.m、CGOAuth.h、CGOAuth.m(取自https://github.com/guicocoa/cocoa-oauth)
在 main.m 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选择器 URLRequestforPath... 没有类方法。
在我导入 main.m 的 GCOAuth.h 中,声明如下:
+ (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。
我试过这样做:
[[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。如果没有选择器的类方法,为什么 Xcode 的自动补全提供方法供我使用?
编辑(这里是 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;
}
这是我尝试过的更多事情,但没有奏效,重新启动 Xcode 并进行清理。
我知道 Xcode 可以识别该方法,因为 (a) 代码完成为我提供了上述方法的名称,并且 (b) 它出现在侧边栏(左侧)的分层视图中。时间就是生命!