将Twitter集成到iPhone应用程序

我希望将Twitter集成到我的应用程序中.我的项目是在ARC支持下创建的.当我添加Twitter框架时，我还用-fno-objc-arc标记了.m文件.

I am hoping to integrate Twitter to my application. My project is created with ARC support. When i added the Twitter framework i also flagged the .m files with -fno-objc-arc.

我可以登录到twitter(这意味着身份验证过程可以正常工作)，并且在身份验证之后，当我单击tweet按钮时，应用程序崩溃了.

I could login to twitter (meaning, the authentication process works), and after the authentication that application crashes when i click the tweet button.

1.)首先，这就是Twitter身份验证的工作原理.

1.) This is what gets called first, twitter authentication works fine.

-(void)loginTwitterUser{
    if(_engine) return;


    _engine = [[SA_OAuthTwitterEngine alloc] initOAuthWithDelegate:self];  
    _engine.consumerKey = @"xxxxxx";
    _engine.consumerSecret = @"xxxxxx";

    if (![_engine isAuthorized]) {
        UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine:_engine delegate:self];
        if (controller) {
            [self presentModalViewController:controller animated:YES];
        }

    }

• _engine-我已声明这是.h文件，但未在.m

  • _engine - i have declared this is the .h file, but did not synthesize it in the .m

    1. 这是我们要发布的地方

    1. This is where we are going to tweet

    -(void)tweetThis:(id)sender{
    [_engine sendUpdate:@"Tweet something"];
    }
    

3.)其他脱盐方法

#pragma mark SA_OAuthTwitterEngineDelegate
- (void) storeCachedTwitterOAuthData: (NSString *) data forUsername: (NSString *) username {
    NSUserDefaults   *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject: data forKey: @"authData"];
    [defaults synchronize];
}

- (NSString *) cachedTwitterOAuthDataForUsername: (NSString *) username {

    return [[NSUserDefaults standardUserDefaults] objectForKey: @"authData"];
}


#pragma mark TwitterEngineDelegate
- (void) requestSucceeded: (NSString *) requestIdentifier {

    NSLog(@"Request %@ succeeded", requestIdentifier);
}

- (void) requestFailed: (NSString *) requestIdentifier withError: (NSError *) error {

    NSLog(@"Request %@ failed with error: %@", requestIdentifier, error);
}

#pragma mark SA_OAuthTwitterController Delegate

在NSLog中，username是null.为什么会这样?

In the NSLog username is null. Why is this ?

- (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username {

    NSLog(@"Authenticated with user %@", username);

}


- (void) OAuthTwitterControllerFailed: (SA_OAuthTwitterController *) controller  {

    NSLog(@"Authentication Failure");
}

- (void) OAuthTwitterControllerCanceled: (SA_OAuthTwitterController *) controller {

    NSLog(@"Authentication Canceled");
}

应用程序在MGTwitterEngine.m的return语句中崩溃.

The application crashes in the MGTwitterEngine.m at the return statement.

- (NSString *)sendUpdate:(NSString *)status inReplyTo:(unsigned long)updateID
{
    if (!status) {
        return nil;
    }

    NSString *path = [NSString stringWithFormat:@"statuses/update.%@", API_FORMAT];

    NSString *trimmedText = status;
    if ([trimmedText length] > MAX_MESSAGE_LENGTH) {
        trimmedText = [trimmedText substringToIndex:MAX_MESSAGE_LENGTH];
    }

    NSMutableDictionary *params = [NSMutableDictionary dictionaryWithCapacity:0];
    [params setObject:trimmedText forKey:@"status"];
    if (updateID > 0) {
        [params setObject:[NSString stringWithFormat:@"%u", updateID] forKey:@"in_reply_to_status_id"];
    }
    NSString *body = [self _queryStringWithBase:nil parameters:params prefixed:NO];

    return [self _sendRequestWithMethod:HTTP_POST_METHOD path:path 
                        queryParameters:params body:body 
                            requestType:MGTwitterUpdateSendRequest
                           responseType:MGTwitterStatus];
}

我该如何解决?