在 iPhone 上使用 Objective C 中的 OAuth 将照片上传到 TwitPic 时遇到问题

Question

我一直在开发一款 iPhone 应用程序，它具有将照片上传到 TwitPic 的功能。我让它与基本身份验证一起使用。

我正在尝试让它与 OAuth 一起使用。我收到身份验证错误。我非常仔细地研究了 TwitPic 文档。

我通过显示 UI Web 视图来授权该应用程序，并且它返回 PIN 值。我在应用程序中输入 PIN 值并请求令牌。

我可以将状态更新上传到 Twitter，但不能上传照片。

我的代码基于此处的一些示例代码：

使用 OAuth 的示例 iPhone 应用程序

这是我的代码：

NSString *url = @"http://api.twitpic.com/2/upload.json";
NSString *oauth_header = [oAuth oAuthHeaderForMethod:@"POST" andUrl:url andParams:nil];

NSLog(@"OAuth header : %@\n\n", oauth_header);

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:url]];
[request addRequestHeader:@"User-Agent" value:@"ASIHTTPRequest"];
request.requestMethod = @"POST";

[request addRequestHeader:@"X-Auth-Service-Provider" value:@"https://api.twitter.com/1/account/verify_credentials.json"];   

[request addRequestHeader:@"X-Verify-Credentials-Authorization" value:oauth_header];    

NSData *imageRepresentation = UIImageJPEGRepresentation(imageToUpload, 0.8);        
[request setData:imageRepresentation forKey:@"media"];
[request setPostValue:@"Some Message"  forKey:@"message"];  
[request setPostValue:TWITPIC_API_KEY  forKey:@"key"];  

[request setDelegate:self];
[request setDidFinishSelector:@selector(requestDone:)];
[request setDidFailSelector:@selector(requestFailed:)];

[request start];    

这是 OAuth 标头：

OAuth realm="http://api.twitter.com/", oauth_timestamp="1275492425", oauth_nonce="b686f20a18ba6763ac52b689b2ac0c421a9e4013", oauth_signature_method="HMAC-SHA1", oauth_consumer_key="zNbW3Xi3MuS7i9cpz6fw", oauth_version="1.0", oauth_token="147275699-jmrjpwk3B6mO2FX2BCc9Ci9CRBbBKYW1bOni2MYs", oauth_signature="d17HImz6VgygZgbcp845CD2qNnI%3D"

Answer 1

哈！我找到了！
我们应该使用 https://api.twitter 创建标头 .com/1/account/verify_credentials.json 并发布到 http://api .twitpic.com/2/upload.json！ （并使用 GET）

    NSString *fakeurl = @"https://api.twitter.com/1/account/verify_credentials.json";
NSString *oauth_header = [oAuth oAuthHeaderForMethod:@"GET" andUrl:fakeurl andParams:nil];

NSLog(@"OAuth header : %@\n\n", oauth_header);

NSString *url = @"http://api.twitpic.com/2/upload.json";
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:url]];
request.delegate = self;
[request addRequestHeader:@"User-Agent" value:@"ASIHTTPRequest"];
request.requestMethod = @"GET";

[request addRequestHeader:@"X-Verify-Credentials-Authorization" value:oauth_header];    
[request addRequestHeader:@"X-Auth-Service-Provider" value:@"https://api.twitter.com/1/account/verify_credentials.json"];   


NSData *imageRepresentation = UIImageJPEGRepresentation([UIImage imageNamed:@"IMG_0717.jpg"], 0.2);    
if (imageRepresentation) {
    NSLog(@"Pic not nil");
}
[request setData:imageRepresentation forKey:@"media"];
[request setPostValue:@"twitpic, i hate you. die painfully."  forKey:@"message"];  
[request setPostValue:twitPicKey  forKey:@"key"];  

[request setDelegate:self];
[request setDidFinishSelector:@selector(requestDone:)];
[request setDidFailSelector:@selector(requestFailed:)];

[request start];

Answer 2

使用GSTwitPicEngine：https://github.com/Gurpartap/GSTwitPicEngine

使用GSTwitPicEngine ：

使用类或根据需要初始化引擎：

self.twitpicEngine = (GSTwitPicEngine *)[GSTwitPicEngine twitpicEngineWithDelegate:self];

查找授权令牌并提供给 twitpicEngine：

[twitpicEngine setAccessToken:token];

然后上传图像并附加文本消息（不发布到 Twitter）：

[twitpicEngine uploadPicture:[UIImage imageNamed:@"mypic.png"]  withMessage:@"Hello world!"]; // This message is supplied back in success delegate call in request's userInfo.

仅上传图像：

[twitpicEngine uploadPicture:uploadImageView.image];

请求结束时，使用适当的数据和信息调用委托方法之一。

---

GSTwitPicEngineDelegate 协议指定了两个委托方法：

- (void)twitpicDidFinishUpload:(NSDictionary *)response {
  NSLog(@"TwitPic finished uploading: %@", response);

  // [response objectForKey:@"parsedResponse"] gives an NSDictionary of the response one of the parsing libraries was available.
  // Otherwise, use [[response objectForKey:@"request"] objectForKey:@"responseString"] to parse yourself.

  if ([[[response objectForKey:@"request"] userInfo] objectForKey:@"message"] > 0 && [[response objectForKey:@"parsedResponse"] count] > 0) {
    // Uncomment to update status upon successful upload, using MGTwitterEngine's instance.
    // [twitterEngine sendUpdate:[NSString stringWithFormat:@"%@ %@", [[[response objectForKey:@"request"] userInfo] objectForKey:@"message"], [[response objectForKey:@"parsedResponse"] objectForKey:@"url"]]];
  }
}

和

- (void)twitpicDidFailUpload:(NSDictionary *)error {
  NSLog(@"TwitPic failed to upload: %@", error);

  if ([[error objectForKey:@"request"] responseStatusCode] == 401) {
    // UIAlertViewQuick(@"Authentication failed", [error objectForKey:@"errorDescription"], @"OK");
  }
}

---

All set?

Answer 3

生成标头的 OAuth 方法必须是 GET。不是邮寄。

另外，网址必须为 https://api.twitter.com/1/account/verify_credentials。 json

Answer 4

谢谢，这也帮助我让它工作:)我还更新了 http://github.com/jaanus/PlainOAuth< /a> 带有工作示例代码。