facebook ios sdk 無法登出bug的解決方案

先說下facebook ios sdk中如何不跳到safari而在程式內登陸

//  UIDevice *device = [UIDevice currentDevice];//  if ([device respondsToSelector:@selector(isMultitaskingSupported)] && [device isMultitaskingSupported]) {//    if (tryFBAppAuth) {//      NSString *scheme = kFBAppAuthURLScheme;//      if (_urlSchemeSuffix) {//        scheme = [scheme stringByAppendingString:@"2"];//      }//      NSString *urlPrefix = [NSString stringWithFormat:@"%@://%@", scheme, kFBAppAuthURLPath];//      NSString *fbAppUrl = [FBRequest serializeURL:urlPrefix params:params];//      didOpenOtherApp = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:fbAppUrl]];//    }////    if (trySafariAuth && !didOpenOtherApp) {//      NSString *nextUrl = [self getOwnBaseUrl];//      [params setValue:nextUrl forKey:@"redirect_uri"];////      NSString *fbAppUrl = [FBRequest serializeURL:loginDialogURL params:params];//      didOpenOtherApp = [[UIApplication sharedApplication] openURL:[NSURL URLWithString:fbAppUrl]];//    }//  }

在Facbook.m檔案中，注釋掉上面那段即可，我的版本是241到260行

然後說下無法登出的原因，先看下登出時調用的方法：

- (void)logout {    [self invalidateSession];            if ([self.sessionDelegate respondsToSelector:@selector(fbDidLogout)]) {        [self.sessionDelegate fbDidLogout];    }}

- (void)invalidateSession {    self.accessToken = nil;    self.expirationDate = nil;        NSHTTPCookieStorage* cookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];    NSArray* facebookCookies = [cookies cookiesForURL:                                [NSURL URLWithString:@"http://login.facebook.com"]];        for (NSHTTPCookie* cookie in facebookCookies) {        [cookies deleteCookie:cookie];    }}

這時候我們發現他只是銷毀掉了http://login.facebook.com下的cookie，所以我們的帳號有時會無法正常登出，因為他沒銷毀https://login.facebook.com下的cookie！，所以我們需要在invalidateSession中加入如下代碼：

NSArray* facebookCookies1 = [cookies cookiesForURL:                                [NSURL URLWithString:@"https://login.facebook.com"]];        for (NSHTTPCookie* cookie in facebookCookies1) {        [cookies deleteCookie:cookie];    }

簡單起見我就加了個1，大家起名不要這樣啊！