在appDelegate中第一次呈现视图 [英] Presenting a view for the first time in appDelegate

问题描述

目标：

当我的应用启动时 - 我需要它在显示视图才能进入主页屏幕。它是一个标签栏应用程序，此视图不是标签栏的一部分。

我使用的是Storyboards和Xcode 5 - 仅限iOS7应用。

问题：

我的代码会检查应用是否是首次启动与否。基于此，我想向用户呈现一次性视图。

我尝试了什么：

以下代码位于appDelegate中这个应用就是这一切的开始。我在那里调用以下代码：

   - （void）showCountrySettings 
 {
 
 if（self.termsHaveBeenAccepted）{
 
 BBCounterySettingsViewController * countrySettings = [[BBCounterySettingsViewController alloc] initWithNibName：@Viewbundle：nil]; 
 
 UIStoryboard * storyboard = [UIStoryboard storyboardWithName：@MainStoryboardbundle：nil]; 
 UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier：@IDENTIFIER]; 
 [self.navigationController pushViewController：vc animated：YES]; 
} 
  

我的编译错误为 [self.navigationController。 。] 不存在。也不是 [self.tabbarcontroller ...];

这很明显，因为我没有设置属性对于这些 - 但我如何解决这个问题并将标签栏连接到故事板？

我错过了什么？

解决方案

   - （BOOL）应用程序：（UIApplication *）application didFinishLaunchingWithOptions：（NSDictionary * ）launchOptions 
 {
 //在应用程序启动后覆盖自定义点。 
 
 
 if（！isAgreementAccepted）
 {
 
 UIStoryboard * storyboard = [UIStoryboard storyboardWithName：@Mainbundle：nil]; 
 UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier：@IDD]; 
 self.window.rootViewController = vc; 
} 
 
返回YES; 
} 
  

如果不接受协议，请设置T& C viewController as rootViewController 当用户单击接受按钮，然后以root身份设置 TabBarviewController 。 / p>

你可以通过申请委托访问任何地方的寡妇对象

  [ [[UIApplication sharedApplication]委托]窗口] .rootViewController = tabViewController。 
  

The goal:

When my app starts up - I need it to display a view before it gets to the "Home" screen. Its a tab bar application and this view is not part of the tabbar.

I am using Storyboards and Xcode 5 - iOS7 only app.

The problem:

I have code that will check if the app is first launch or not. Based on that, I then want to present a one time only view to the user.

What I have tried:

The following code is in the appDelegate of the application as this is where it all starts. I call the following bit of code in there:

-(void)showCountrySettings
{

    if (self.termsHaveBeenAccepted){

        BBCounterySettingsViewController *countrySettings = [[BBCounterySettingsViewController alloc]initWithNibName:@"View" bundle:nil];

        UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
        UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"IDENTIFIER"];
        [self.navigationController pushViewController:vc animated:YES];
}

I get compile errors as [self.navigationController..] doesn't exist. Nor does [self.tabbarcontroller...];

This is obvious as I don't have properties setup for these - but how do I go about resolving this and connecting the tab bar to the storyboard?

What am I missing?

解决方案

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.


    if(!isAgreementAccepted)
    {

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"IDD"];
    self.window.rootViewController=vc;
    }

    return YES;
}

If agreement is not accepted set the T&C viewController as rootViewController when user click the accept button then set the TabBarviewController as root.

u can access the widow object through application delegate any where

[[[UIApplication sharedApplication]delegate] window].rootViewController=tabViewController.

这篇关于在appDelegate中第一次呈现视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！