在Facebook上發佈圖像iOS

Question

我正在製作和應用程序，你修改圖像，然後你可以上傳到Twitter，Facebook等...我的問題是與Facebook。還有fbDidLogin從不叫。我遵循這個教程的分配，並搜索分配，並嘗試解決方案的分配和任何東西。

因爲我不知道用戶是否會將照片導出到Facebook我只有在必要時才登錄它離開代碼。我希望有一個人可以幫助我。

我需要它的發佈我的形象，我創建到用戶牆上

//<FBSessionDelegate, FBDialogDelegate, FBRequestDelegate> 

- (void)publishFacebook:(UIImage *)img { 

    [self loginFacebook]; 
    NSMutableDictionary * params = [NSMutableDictionary dictionaryWithObjectsAndKeys: 
             img, @"picture", @"Testing...", @"caption", 
             nil]; 
    [_facebook requestWithGraphPath:@"me/photos" andParams:params andHttpMethod:@"POST" andDelegate:self]; 
    NSLog(@"Image posted"); 
} 

- (void)loginFacebook { 

    if (_facebook == nil) { 
     _facebook = [[Facebook alloc] initWithAppId:kAppId andDelegate:self]; 
    } 

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    if ([defaults objectForKey:@"FBAccessTokenKey"] && [defaults objectForKey:@"FBExpirationDateKey"]) { 
     _facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"]; 
     _facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"]; 
    } 

    if (![_facebook isSessionValid]) { 
     NSArray *permissions = [NSArray arrayWithObjects:@"email", @"offline_access", @"publish_stream", nil]; 
     [_facebook authorize:permissions]; 
     [defaults synchronize]; 
    } 
} 

- (void)fbDidLogin { 
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
    [defaults setObject:[_facebook accessToken] forKey:@"FBAccessTokenKey"]; 
    [defaults setObject:[_facebook expirationDate] forKey:@"FBExpirationDateKey"]; 
    [defaults synchronize]; 

} 

在我的應用程序委託

// Pre 4.2 support 
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url { 
    return [[_viewController facebook] handleOpenURL:url]; 
} 

// For 4.2+ support 
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { 
    return [_viewController.facebook handleOpenURL:url]; 
} 

它去Facebook的應用程序，它要求所有的權限等..和IT在控制檯說：「圖像發佈」，但如果我留在Facebook應用程序沒有接受或拒絕，只是呆在那裏它執行上傳圖像...

如果在Facebook應用程序我接受它返回到我的普通應用程序的所有權限。應用程序委託方法返回正常值Facebook的網頁與一個非常長的字符串。

我該怎麼辦？

感謝

Answer 1

試試這個代碼...

-(void)buttonPressed:(id)sender{ //start the facebook action by clicking any button 
    facebook = [[Facebook alloc] initWithAppId:@"YOUR_APP_ID" andDelegate:self]; 

    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
      if ([defaults objectForKey:@"FBAccessTokenKey"] && [defaults objectForKey:@"FBExpirationDateKey"]) { 
       facebook.accessToken = [defaults objectForKey:@"FBAccessTokenKey"]; 
       facebook.expirationDate = [defaults objectForKey:@"FBExpirationDateKey"]; 
      } 
    if (![facebook isSessionValid]) { 
     [facebook authorize:nil]; 
    }else{ 
    [self postWall]; 
    } 
    // Pre 4.2 support 
    - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url { 
     return [facebook handleOpenURL:url]; 
    } 
// after 4.2 support 
    - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url 
    sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { 
    return [facebook handleOpenURL:url]; 
} 
    - (void)fbDidLogin { 
     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
     [defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"]; 
     [defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"]; 
     [defaults synchronize]; 
     [self postWall]; 
    } 
    -(void)postWall{ 

      NSString *filePath = [[NSBundle mainBundle] pathForResource:@"image" ofType:@"jpg"]; 
NSData *imageData = [NSData dataWithContentsOfFile:filePath]; 
NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys: 
           @"Test message", @"message", imageData, @"source", nil]; 
[facebook requestWithGraphPath:@"me/photos" andParams:params andHttpMethod:@"POST" andDelegate:self]; 

     NSLog(@"Image posted"); 
    } 
-(void)fbDidNotLogin:(BOOL)cancelled{ 
    if (cancelled) { 
     UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"Could not Login" message:@"Facebook Cannot login for your application" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles: nil]; 
     [alertView show]; 
    } 
} 

退房沒你把委託FBsessionDelegate，FBRequestDelegate在你的控制器File.Try在您的應用程序運行你的Facebook本身，而不是在Safari要做到這一點檢查這個鏈接。 Facebook Implementation within app (without opening in safari or native app)

EDITED： 與postWall方法改變的代碼，並加入fbDidNotLoginMethod.This是正確的。