在AppDelegate上顯示條款和條件

我想先顯示UIAlertController條款appdelegate首先，如果用戶點擊「同意」，我就可以將我的視圖控制器拖到我的視圖控制器，但是如果用戶點擊「取消」，那麼應用程序應該保持在啓動畫面上。我有下面的代碼，但它顯示我的viewController沒有uinavigationController和沒有功能。在AppDelegate上顯示條款和條件

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

    userDefaults = [NSUserDefaults standardUserDefaults]; 
    if (![userDefaults boolForKey:@"TermsAndConditions"]) { 

     _window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds]; 
     _window.rootViewController = [[UIViewController alloc] init]; 
     _window.windowLevel = UIWindowLevelAlert; 
     _window.backgroundColor = [UIColor prosenseWhiteColor]; 

     UIImageView *windowImage = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Defaulte"]]; 
     [windowImage setFrame:[UIScreen mainScreen].bounds]; 
     [windowImage setContentMode:UIViewContentModeScaleAspectFit]; 
     [_window addSubview:windowImage]; 

     [_window makeKeyAndVisible]; 

     NSString *path = [[NSBundle mainBundle] pathForResource:@"termsAndConditions" ofType:@"txt"]; 
     NSString *tsAndCs = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:NULL]; 

     UIAlertController *termsAndConditionsController = [UIAlertController alertControllerWithTitle:@"Terms and conditions" message:tsAndCs preferredStyle:UIAlertControllerStyleAlert]; 
     UIAlertAction *agree = [UIAlertAction actionWithTitle:@"Agree" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action){ 

      [self.window.rootViewController dismissViewControllerAnimated:YES completion:nil]; 

      [userDefaults setBool:YES forKey:@"TermsAndConditions"]; 
      [userDefaults synchronize]; 

         UIStoryboard *st_board = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; 
         PTPdfFileListViewController *pdfFileListView = (PTPdfFileListViewController*)[st_board instantiateViewControllerWithIdentifier:@"PTPdfFileListViewController"]; 
         self.window.windowLevel = UIWindowLevelNormal; 
         [self.window makeKeyAndVisible]; 
         [(UINavigationController*)self.window.rootViewController presentViewController:pdfFileListView animated:NO completion:nil]; 
     }]; 

     UIAlertAction *cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action){ 
      NSLog(@"Cancel"); 
     }]; 

     [termsAndConditionsController addAction:cancel]; 
     [termsAndConditionsController addAction:agree]; 
     [_window.rootViewController presentViewController:termsAndConditionsController animated:YES completion:nil]; 

    }else { 
     NSLog(@"accepted terms already"); 
    } 
}

什麼是我做錯了？

來源

2016-03-01 Sipho Koza

希望你設置你的「的viewController」作爲初始視圖控制器。這可能是空白視圖控制器在啓動屏幕後顯示的原因。你能檢查一下嗎？謝謝。 –

爲什麼你讓這太複雜。只要創建一個UIveiw，然後顯示在rootviewcontroller上，一旦該accdept不加載它。 –

@Nitin Gohel我試過了，我認爲可能有更好的方法來做，因爲你建議先顯示rootview 2秒，然後顯示uiview的條款和條件 –

你應該在UINavigationController中以root身份嵌入PTPdfFileListViewController，並提供該UINavigationController。

來源

2016-03-01 12:07:49 kirander

嘗試使用pushViewController而不是presentViewController，那麼它將在您的主應用程序的導航控制器中。

用戶將能夠回去，所以我不確定這是您正在尋找的解決方案。

解決方案，而後退按鈕：

[(UINavigationController*)self.window.rootViewController setViewControllers:@[pdfFileListView] animated:NO];

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2016-03-01 15:51:47 Alistra

在AppDelegate上顯示條款和條件

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