ios - 通过oauth将图像发送到twitter

Question

我可以使用 oauth 成功登录 Twitter。现在我需要发布带有状态的图像。为此，我实现了以下......

-(void)shareontw{
    NSString *postUrl =@"https://api.twitter.com/1.1/statuses/update_with_media.json";
    NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:postUrl]];
    [req setValue:[oAuth oAuthHeaderForMethod:@"POST" andUrl:postUrl andParams:nil] forHTTPHeaderField:@"Authorization"];
    [req setHTTPMethod:@"POST"];
    NSString *boundary = @"0xKhTmLbOuNdArY---This_Is_ThE_BoUnDaRyy---pqo";
    NSString *headerBoundary = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",
                            boundary];
    [req addValue:headerBoundary forHTTPHeaderField:@"Content-Type"];
    NSMutableData *myRequestData = [NSMutableData data];
    NSData *imageData = UIImageJPEGRepresentation(globalimage, 0.8);

    [myRequestData appendData:[[NSString stringWithFormat:@"--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"Content-Disposition: form-data; name=\"media\"; filename=\"dummy.jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"Content-Type: image/jpeg\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"Content-Transfer-Encoding: binary\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

    // add it to body
    [myRequestData appendData:imageData];
    [myRequestData appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"Content-Disposition: form-data; name=\"message\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
    [myRequestData appendData:[@"Success\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

    [myRequestData appendData:[[NSString stringWithFormat:@"--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
    [req setHTTPBody:myRequestData];
    NSHTTPURLResponse *response;
    NSError *error = nil;
    NSString *responseString = [[[NSString alloc] initWithData:[NSURLConnection sendSynchronousRequest:req returningResponse:&response error:&error] encoding:NSUTF8StringEncoding] autorelease];

    if (error) {
        NSLog(@"Error from NSURLConnection: %@", error);
    }
    NSLog(@"Got HTTP status code from Twitter after posting profile image: %d", [response statusCode]);
    NSLog(@"Response string: %@", responseString);}

但它给我错误:响应字符串:{"errors":[{"message":"Bad Authentication data","code":215}]}

我找不到我在这里做错的问题。如果有人有想法，请帮助我。

提前致谢。

Answer 1

感谢你上面的代码工作正常，为我节省了很多时间。我只更改一行代码

这一行 NSData *imageData = UIImageJPEGRepresentation(globalimage, 0.8);

替换为

NSData *imageData = UIImageJPEGRepresentation(_imgView.image, 0.8);

它正在工作:)