如何通過使用http://upload.twitter.com/1/statuses/update_with_media下面的ios 5.0發佈映像到twitter

Question

我試圖通過使用新的API狀態/ update_with_media在Twitter上分享圖像。然後我搜索並從dev.twitter.com/discussion頁面下面得到了代碼。這裏的代碼如下。

輸入代碼在這裏

- (NSString *) _uploadImage:(UIImage *)image requestType:(MGTwitterRequestType)requestType responseType:(MGTwitterResponseType)responseType 
{ 

    NSString *boundary = @"----------------------------991990ee82f7"; 

    NSURL *finalURL = [NSURL URLWithString:@"http://upload.twitter.com/1/statuses/update_with_media.json"]; 
    if (!finalURL) 
    { 
     return nil; 
    } 

    NSLog(@"-> Open Connection: %@", finalURL); 


    OAMutableURLRequest *theRequest = [[OAMutableURLRequest alloc] initWithURL:finalURL 
                     consumer:self.consumer 
                     token:_accessToken 
                     realm: nil 
                  signatureProvider:nil]; 

    [theRequest setHTTPMethod:@"POST"]; 
    [theRequest setHTTPShouldHandleCookies:NO]; 

    // Set headers for client information, for tracking purposes at Twitter. 
    [theRequest setValue:_clientName forHTTPHeaderField:@"X-Twitter-Client"]; 
    [theRequest setValue:_clientVersion forHTTPHeaderField:@"X-Twitter-Client-Version"]; 
    [theRequest setValue:_clientURL  forHTTPHeaderField:@"X-Twitter-Client-URL"]; 


    NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary]; 
    [theRequest setValue:contentType forHTTPHeaderField:@"content-type"]; 

    NSMutableData *body = [NSMutableData dataWithLength:0]; 
    [body appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 

    [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"media_data[]\"; filename=\"1.jpg\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:[UIImageJPEGRepresentation(image, 1.0) base64EncodingWithLineLength:0]] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"status\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithString:@"Honeymoon uploads image\r\n"] dataUsingEncoding:NSUTF8StringEncoding]]; 
    [body appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 

    // -------------------------------------------------------------------------------- 
    // modificaiton from the base clase 
    // our version "prepares" the oauth url request 
    // -------------------------------------------------------------------------------- 
    [theRequest prepare]; 

    [theRequest setHTTPBody:body]; 

    // Create a connection using this request, with the default timeout and caching policy, 
    // and appropriate Twitter request and response types for parsing and error reporting. 
    MGTwitterHTTPURLConnection *connection; 
    connection = [[MGTwitterHTTPURLConnection alloc] initWithRequest:theRequest 
                  delegate:self 
                 requestType:requestType 
                 responseType:responseType]; 

    if (!connection) 
    { 
     return nil; 
    } 
    else 
    { 
     [_connections setObject:connection forKey:[connection identifier]]; 
     //[connection release]; 
    } 

    return [connection identifier]; 
} 

後來才知​​道是因爲我使用後的文本或圖像的OAuth方法嘰嘰喳喳，因爲我的應用程序部署目標開始表格3.0 SA_OAuthtwitterengine執行代碼（IOS，iPod的） ，所以我嘗試這種方法。

現在我的問題是如何創建代碼發送圖像Twitter的消息。

我嘗試發送圖像使用下面的類型

[_engine sendupdate:@"http://www.prepare-community.com/ShareFiles/index-fr.jpg"]; 

我有連接錯誤，這意味着401錯誤到Twitter。

請問我可以如何使用上面的代碼發送圖像到twitter？

Answer 1

下面是使用新的twitter api update_with_media圖像上傳的解決方案。使用這個api你可以直接上傳圖片到twitter賬戶。上面的_uploadimage代碼應該先放在SA_OAuthtwitter引擎的.m文件中，然後放入.h文件中。

並做一個小正確的地方是放置filenamed = 1.jpg而不是1.png。

現在只需將下面的代碼放在MGTwitterengine.m類中。這裏的代碼是

- (NSString *)_uploadImage:(UIImage *)image withStatus:(NSString *)status 
{ 
    return [self _uploadImage:image withStatus:status requestType:MGTwitterImageRequest responseType:MGTwitterStatuses]; 
} 

然後我們使用這段代碼上傳圖片到twitter。也就是

[_engine _uploadImage：yourpicture withStatus：yourstatus];

希望它會爲你工作....