ios 分享到新浪微博

参考（tiny4cocoa）：http://tiny4cocoa.com/thread-1771-1-1.html

参考（csdn）：http://blog.youkuaiyun.com/sjzsp/article/details/6338842
1.  首先在http://open.t.sina.com.cn / 中申请成为开发者，再创建不同的应用，获得相应的 App Key  （在下面链接中的source即为app key）

2.  登录认证：
NSString  *authString = [ NSString   stringWithFormat : @"%@:%@" , sinaIDField . text ,sinaPasswordField . text ];
NSData  *authData = [authString  dataUsingEncoding : NSUTF8StringEncoding ];
NSString  *authValue = [ NSString   stringWithFormat : @"Basic %@" ,[authData base64EncodingWithLineLength : 80 ]];

NSURL  *url = [ NSURL   URLWithString : @"http://api.t.sina.com.cn/account/verify_credentials.xml?source=3930264715 " ];
NSMutableURLRequest  *request = [[ NSMutableURLRequest   alloc ]  initWithURL :url];
[request  setHTTPMethod : @"GET" ];
[request  setValue :authValue  forHTTPHeaderField : @"Authorization" ];

NSURLResponse  *response;
NSError  *error;

[ NSURLConnection   sendSynchronousRequest :request  returningResponse :&response  error :&error];

[request  release ];

NSHTTPURLResponse  *httpResponse = ( NSHTTPURLResponse  *)response;

int  statusCode = [httpResponse  statusCode ];

NSLog ( @"status code = %d" ,statusCode);

if  (statusCode !=  200 ) {
alertTitle =  @" 帐号或密码错误 " ;
alertMassage =  @" 请您输入正确的帐号和密码！ " ;
} else  {
alertTitle =  @"" ;
alertMassage =  @" 登录成功！ " ;
}
}
UIAlertView  *alert = [[ UIAlertView   alloc ]  initWithTitle :alertTitle
message :alertMassage
delegate : nil   cancelButtonTitle : @" 确定 "
otherButtonTitles : nil ];
[alert  show ];
[alert  release ];


3. 将内容（图片   文字）发送到新浪微博
NSString  *authString = [ NSString   stringWithFormat : @"%@:%@" ,[[ NSUserDefaults  standardUserDefaults ]  objectForKey : @"sinaID" ],[[ NSUserDefaults   standardUserDefaults ] objectForKey : @"sinaPassword" ]];
NSData  *authData = [authString  dataUsingEncoding : NSUTF8StringEncoding ];
NSString  *authValue = [ NSString   stringWithFormat : @"Basic %@" ,[authData base64EncodingWithLineLength : 80 ]];


NSString  *boundary =  @"0xKhTmLbOuNdArYckkk" ;
NSString  *filename =  @" test .jpg" ;

NSData  *imageData =  UIImageJPEGRepresentation (shareImage, 1 );


NSString  *bodyPrefixString = [ NSString   stringWithFormat : @"--%@/r/n" , boundary];
NSString  *bodySuffixString = [ NSString   stringWithFormat : @"/r/n--%@--/r/n" , boundary];
NSString  *contentDisposition = [ NSString   stringWithFormat : @"Content-Disposition: form-data; name="pic"; filename="%@"/r/n" , filename];
NSString  *contentImageType = [ NSString   stringWithFormat : @"Content-Type: image/%@/r/n" , [filename  pathExtension ]];
NSString  *contentTransfer  =  @"Content-Transfer-Encoding: binary/r/n/r/n" ;

NSString  *bodyUpdateField = [ NSString   stringWithFormat : @"Content-Disposition: form-data;name="status"/r/n/r/n%@/r/n" ,[ NSString   stringWithFormat : @"%@" , textView . text ]];
NSMutableData  *postBody = [ NSMutableData   data ];

[postBody  appendData :[bodyPrefixString  dataUsingEncoding : NSUTF8StringEncoding  allowLossyConversion : NO ]];
[postBody  appendData :[bodyUpdateField  dataUsingEncoding : NSUTF8StringEncoding  ]];
[postBody  appendData :[bodyPrefixString  dataUsingEncoding : NSUTF8StringEncoding  allowLossyConversion : NO ]];
[postBody  appendData :[contentDisposition  dataUsingEncoding : NSUTF8StringEncoding  ]];
[postBody  appendData :[contentImageType  dataUsingEncoding : NSUTF8StringEncoding  ]];
[postBody  appendData :[contentTransfer  dataUsingEncoding : NSUTF8StringEncoding ]];
[postBody  appendData :imageData];
[postBody  appendData :[bodySuffixString  dataUsingEncoding : NSUTF8StringEncoding  allowLossyConversion : NO ]];


NSString  *baseURL = [ NSString   stringWithFormat :@"http://api.t.sina.com.cn/statuses/upload.xml?source=3930264715 " ];
NSURL  *url = [ NSURL   URLWithString :baseURL];
NSMutableURLRequest  *mainRequest = [[ NSMutableURLRequest   alloc ]  initWithURL :url
cachePolicy : NSURLRequestUseProtocolCachePolicy
timeoutInterval : 30.0f ];

[mainRequest  setHTTPMethod : @"POST" ];
[mainRequest  setValue :authValue  forHTTPHeaderField : @"Authorization" ];
NSString  *contentType = [ NSString   stringWithFormat : @"multipart/form-data; boundary=%@" , boundary,  nil ];
[mainRequest  setValue :contentType  forHTTPHeaderField : @"Content-Type" ];
[mainRequest  setHTTPBody :postBody];

NSURLResponse  *shareResponse;
NSError  *error;

NSData  *responseData = [ NSURLConnection   sendSynchronousRequest :mainRequest  returningResponse:&shareResponse  error :&error];
NSString  *responseString = [[ NSString   alloc ]  initWithData :responseData  encoding :NSUTF8StringEncoding ];

NSHTTPURLResponse  *httpResponse = ( NSHTTPURLResponse  *)shareResponse;

int  statusCode = [httpResponse  statusCode ];

NSLog ( @"status code = %d" ,statusCode);

BOOL  succeed =  NO ;
if  (statusCode ==  200 ) {
succeed =  YES ;
}
[mainRequest  release ];


NSLog ( @"response string : %@" ,responseString);

[responseString  release ];

[ uploadWaiting   stopAnimating ][ UIAlertView   alloc ] initWithTitle : @""   message :message
delegate : self
cancelButtonTitle : @" 确定 "   otherButtonTitles : nil ];
[alert  show ];
[alert  release ];