Question

我在保留申请状态方面遇到了问题。我的应用程序基于故事板，这是它的方式。首先我有一个导航控制器，然后是一个登录屏幕。当用户登录时，我将其推送到左侧有桌面视图的控制器，使用UITabbar项目，这主要是一个自定义标签栏。单击每个按钮，我将该容器视图添加到self。应用程序状态保留到此为止，但每当我进一步推动时，它都不会保留和恢复状态。在自定义选项卡栏上，我甚至对子视图控制器进行编码和解码，并在状态恢复时相应地添加。但是当我进一步导航时却没有。此外，我看到了一个奇怪的行为，如果我最初点击第一个标签项并在导航中进一步移动，它会进一步保留和恢复状态。还有一件事，当我通过点击停止和播放按钮在模拟器上运行应用程序时，它会显示保留视图几秒钟并返回自定义选项卡栏。任何帮助将不胜感激。

我的标签栏代码是

// encodeRestorableStateWithCoder is called when the app is suspended to the background
- (void)encodeRestorableStateWithCoder:(NSCoder *)coder
{
    NSLog(@"ParentViewController: encodeRestorableStateWithCoder");
    [coder encodeObject:theNavigationController forKey:@"RootNav"];
    [coder encodeObject:ssTodayNaVController forKey:@"TodaysCallNavEncode"];
    // remember our children view controllers
    [coder encodeObject:self.ssDasboardVC forKey:@"DashboardChild"];
    [coder encodeObject:self.ssMessageVC forKey:@"MessageChild"];

    [coder encodeObject:self.ssSearchCustomerVC forKey:SEARCH_CUSTOMER_SCENE];
    [coder encodeObject:self.ssTodaysCallVC forKey:TODAYS_SCENE];

    // remember the segmented control state
    [coder encodeInteger:self.tabBar.mSelectedIndex forKey:@"selectedIndex"];

    [super encodeRestorableStateWithCoder:coder];
}

// decodeRestorableStateWithCoder is called when the app is re-launched
- (void)decodeRestorableStateWithCoder:(NSCoder *)coder
{
    NSLog(@"ParentViewController: decodeRestorableStateWithCoder");
    theNavigationController=[coder decodeObjectForKey:@"RootNav"];
    ssTodayNaVController=[coder decodeObjectForKey:@"TodaysCallNavEncode"];
    self.tabBar.mSelectedIndex = [coder decodeIntegerForKey:@"selectedIndex"];
    [[NSNotificationCenter defaultCenter]postNotificationName:TABBUTTON_NOTIFICATION object:[NSNumber numberWithInteger:self.tabBar.mSelectedIndex]];
    [self.tabBar reloadData];
    [super decodeRestorableStateWithCoder:coder];
}

如果我用这种方法打印保存的控制器，它会打印但不保存

- (UIViewController *)application:(UIApplication *)application
viewControllerWithRestorationIdentifierPath:(NSArray *)identifierComponents
                            coder:(NSCoder *)coder {

    //   return various navigation controllers here.
    //   actual view controlers will each be returned in their own classes
    SCLogNotice(@"Saved Controllers are %@",identifierComponents);
    return nil;
}

干杯

ChildViewController的状态保存和恢复问题

0 个答案: