iPad模式視圖控制器縱向縱向運行

Question

我在橫向模式下呈現ModalViewController時遇到了一些困難。基本上，它以正確的界面方向顯示，並且只有當設備處於橫向模式時才旋轉，但視圖控制器的行爲好像處於縱向模式。

2012-03-06 13:51:49.308 OrientationTest[3132:207] {{0, 0}, {1024, 748}} 
2012-03-06 13:51:49.310 OrientationTest[3132:207] {{0, 0}, {1024, 748}} 
2012-03-06 13:51:49.310 OrientationTest[3132:207] {{0, 0}, {1024, 748}} 
2012-03-06 13:51:49.310 OrientationTest[3132:207] {{0, 0}, {1024, 748}} 
2012-03-06 13:51:49.313 OrientationTest[3132:207] {{0, 20}, {1024, 748}} 
2012-03-06 13:51:49.314 OrientationTest[3132:207] {{0, 0}, {748, 1024}} 
2012-03-06 13:51:49.315 OrientationTest[3132:207] {{20, 0}, {748, 1024}} 
2012-03-06 13:51:50.991 OrientationTest[3132:207] {{20, 0}, {748, 1024}} 
2012-03-06 13:51:50.991 OrientationTest[3132:207] {{20, 0}, {748, 1024}} 
2012-03-06 13:51:51.647 OrientationTest[3132:207] {{20, 0}, {748, 1024}} 
2012-03-06 13:51:51.648 OrientationTest[3132:207] {{0, 0}, {748, 1024}} 
2012-03-06 13:51:53.481 OrientationTest[3132:207] {{0, 0}, {748, 1024}} 
2012-03-06 13:51:53.482 OrientationTest[3132:207] {{0, 0}, {748, 1024}} 
2012-03-06 13:51:53.897 OrientationTest[3132:207] {{0, 0}, {748, 1024}} 
2012-03-06 13:51:53.898 OrientationTest[3132:207] {{20, 0}, {748, 1024}} 

基本上loginViewController行爲，如果：

我幾個旋轉後

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    NSLog(@"%@",NSStringFromCGRect(self.view.frame)); 
    return UIInterfaceOrientationIsLandscape(interfaceOrientation); 
}  

日誌結果呈現模式這樣

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 
    // Override point for customization after application launch. 
    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil]; 
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:self.viewController]; 
    self.window.rootViewController = navController; 
    [self.window makeKeyAndVisible]; 

    LoginViewController *lvc = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:[NSBundle mainBundle]]; 
    [self.window.rootViewController presentModalViewController:lvc animated:NO]; 

    return YES; 
} 

在LoginViewController它是在肖像模式。我在這個視圖上有兩個文本字段，當我點擊其中的一個時，我想將視圖向上移動，因此鍵盤不顯示在文本字段上。爲了做到這一點，我不得不修改frame.origin.x而不是y，因爲軸是倒置的（視圖像人像一樣），這導致了很多問題。

編輯：

如果我改變LoginViewController模態呈現風格UIModalPresentationPageSheet它按預期工作所以有一些問題與全屏模式下

第二個編輯：

我已將代碼分解爲基本代碼。我甚至不提出一個模式視圖控制器，只是將該視圖控制器初始化爲根視圖控制器，但仍然發生這種情況。

應用程序的委託：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; 
    // Override point for customization after application launch. 
    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil]; 
    self.window.rootViewController = self.viewController; 
    [self.window makeKeyAndVisible]; 
    return YES; 
} 

在我的視圖控制器：

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    NSLog(@"%@",NSStringFromCGRect(self.view.frame)); 
    return UIInterfaceOrientationIsLandscape(interfaceOrientation); 
} 

Answer 1

好了，我終於找到了這個正常工作的一種方式。看起來，如果你只是創建一個新的視圖控制器，並表示它將始終被顛倒。我發現的修復是把視圖控制器放在導航控制器中。

LoginViewController *lvc = [[LoginViewController alloc] initWithNibName:@"LoginViewController" bundle:[NSBundle mainBundle]]; 
UINavigationController *nvc = [[UINavigationController alloc] initWithRootViewController:lvc]; 
nvc.navigationBarHidden = YES; 
lvc.modalPresentationStyle = UIModalPresentationFullScreen; 
lvc.parentView = self.navController.view; 
[self.window.rootViewController presentModalViewController:nvc animated:NO]; 

Answer 2

改變這種

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    NSLog(@"%@",NSStringFromCGRect(self.view.frame)); 
    return UIInterfaceOrientationIsLandscape(interfaceOrientation); 
}  

這個

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{ 
    // Return YES for supported orientations 
    NSLog(@"%@",NSStringFromCGRect(self.view.frame)); 
    return YES; 
}  

Answer 3

被x/y倒轉的幀是一個「特徵」;）您缺少convertRect:fromView。看看converting rects and points之間的意見。

就你而言，你需要將鍵盤框的矩形轉換爲你的視圖控制器的主視圖。沒有看到你的鍵盤邊框的東西，我不知道到底，但也可能是這樣的：

[self.view convertRect:keyboardFrame fromView:keyboardView];