崩溃没有引用我的应用程序中这个被调用的部分,不幸的是,我一直无法重现它,所以我无法确定我的应用程序在哪里导致这一点.

如果有任何用途,所有的崩溃都已经在运行ios 7的iPhone中.

崩溃日志：

第126行：

if (accessToken == nil || [accessToken stringByTrimmingCharactersInSet:
                           [NSCharacterSet whitespaceCharacterSet]].length == 0) {

在

+ (FBAccessTokenData *) createTokenFromString:(NSString *)accessToken
                              permissions:(NSArray *)permissions
                           expirationDate:(NSDate *)expirationDate
                                loginType:(FBSessionLoginType)loginType
                              refreshDate:(NSDate *)refreshDate
                   permissionsRefreshDate:(NSDate *)permissionsRefreshDate
{
if (accessToken == nil || [accessToken stringByTrimmingCharactersInSet:
                           [NSCharacterSet whitespaceCharacterSet]].length == 0) {
    return nil;
}
if (expirationDate == nil) {
    expirationDate = [NSDate distantFuture];
}
if (refreshDate == nil) {
    refreshDate = [NSDate date];
}
if (permissionsRefreshDate == nil) {
    permissionsRefreshDate = [NSDate distantPast];
}

FBAccessTokenData* fbAccessToken = [[FBAccessTokenData alloc] initWithToken:accessToken
                                                                permissions:permissions
                                                             expirationDate:expirationDate
                                                                  loginType:loginType
                                                                refreshDate:refreshDate
                                                     permissionsRefreshDate:permissionsRefreshDate];
return [fbAccessToken autorelease];
}