视图控制器一个闪烁在另一个之上

Question

我正在更新以ios 6上传到AppStore的应用程序，以适应IOS 7 SDK，我有一个UIViewController的问题我看到UIViewControllers在另一个上面闪烁一秒然后我可以看到第二个就像我应该的那样，我添加了这张照片：

ViewController中间的橙色来自前一个，它只发生在IOS 7上 推送到下一个视图控制器的代码是：` - （IBAction）goButtonPressed     {         NSString * UsersListViewControllerXIB = [[NSString alloc] init];         if（sing.iPhoneType == 5）{         UsersListViewControllerXIB = @＆＃34; UsersListViewController5＆＃34 ;;         }         其他{             UsersListViewControllerXIB = @＆＃34; UsersListViewController＆＃34 ;;

    }

    // sanity check
    if (toAge < fromAge)
    {
        self.alert.title = @"שגיאה";
        self.alert.message = [NSString stringWithFormat:@"\"עד גיל\": %d - לא יכול להיות     קטן מ %d", toAge, fromAge];
        [self.alert show];
        return;
    }
    NSLog(@"goButtonPressed: area:%d from:%d to:%d ", areaCode, fromAge, toAge);
    UsersListViewController *usersListViewController = [[UsersListViewController alloc]               initWithNibName:UsersListViewControllerXIB bundle:[NSBundle mainBundle]];

// save new defaults value:
[[NSUserDefaults standardUserDefaults] setInteger:toAge forKey:@"OnlineAgeMax"];
[[NSUserDefaults standardUserDefaults] setInteger:fromAge forKey:@"OnlineAgeMin"];
[[NSUserDefaults standardUserDefaults] setInteger:areaCode forKey:@"OnlineArea"];

// call synchronize to save changes to disk now
[[NSUserDefaults standardUserDefaults] synchronize];

usersListViewController.areaCode = areaCode;
usersListViewController.fromAge = fromAge;
usersListViewController.toAge = toAge;
usersListViewController.genderCode = [self generateGenderCodeAccordingToUserPref];

NSLog(@"genderCode = %@", usersListViewController.genderCode);

usersListViewController.userGuid = [[NSUserDefaults standardUserDefaults]
                                    objectForKey:@"userGuid"];
usersListViewController.listText = @"מחוברים";
self.title = @"הגדרות מחוברים";

[self.navigationController pushViewController:usersListViewController animated:YES];

}`

Answer 1

最有可能的是：你的第二个（推送的）viewController的backgroundColor有alpha = 0（[UIColor clearColor]）