Lock orientation view - orientation

My app opens in portrait. When your turn to lanscape, a second landscape view appears. I want the user to be able to lock the screen in this position so turning the device to potrait does not change the view back to the first view unless they unlock it.

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Dismissing imagePickerController while holding the device landscape style causes my app to rotate into landscape mode (but my app is portrait only)

I have a portrait and portrait upside-down app. I present an imagePickerController and it allows me to take pictures which can be either landscape or portrait. after taking a picture, the imagePicker verifies if I want to use the photo that was taken. If I hold my device 'sideways' (in a landscape fashion), the image picker view will dismiss like normal and my original view controller will be displayed, except it is in landscape mode (including the keyboard). This should be impossible because my app only supports portrait orientations.
Any ideas on how to keep my app in portrait mode so that the UI doesn't get messed up?
This is my app before I open the imagePicker:
This is the imagePicker right before I dismiss it. although this screenshot is in portrait mode, please imagine that I am holding the device SIDEWAYS (landscape style):
This is the resulting bugged out screen, that I would like to prevent:
I would first check Info.plist and confirm that the orientation is correct and does not contain any landscape options for either iphone or ipad:

iOS Orientation Change with ECSlidingViewController

I have an app that is a single view: a UIWebView that gets pdfs loaded into it. The pdfs are loaded from an ECSlidingViewController.
For some reason, when the app goes from portrait to landscape, the WebView remains in the same position and there is a large dark area to the left of the screen.
Portrait:
Landscape:
I have tried a number of techniques, but they each have problems. For example I can't simply reload a landscape view when the orientation changes, the user will lose their place in the webview. Any ideas?

ios set screen rotate whether the device locked or not

When my device is locked, but in my app, I want to tap a button, my app(view controller) will rotate. Just like my device is not locked and has already set orientationMaskAll, then I rotate my device, the view controller rotate?
I want to make a custom movie player. when MPMoviePlayerController view addsubview in a containView, when I tap a button, the device rotate, and the MPMoviePlayerController view enter fullscreen!

iOS Orientation adapts to unapproved device orientation after Camera dismissed

I am currently writing an iOS app in which have the acceptable device orientations set to Landscape Right and Landscape Left, and in all of my view controllers, I’m returning only those two in the supportedInterfaceOrientations method.
However, if the user uses the in-app camera functionality (which is implemented via UIImagePickerController presented modally in full screen) and rotates the device to Portrait orientation to take a picture, the camera rotates to portrait mode (which is fine), and if the user clicks "Use Photo", when the modal view is dismissed, the view from which the camera was launched is somehow now in portrait mode (which is not fine).
After the camera view has been dismissed, the view controller from which it was launched has UIDeviceOrientationIsPortrait set to true. I am wondering how it ended up in this orientation, and how when a picture is taken, I can ensure that the presenting view controller remains in a landscape orientation. Any help is greatly appreciated!
I am currently writing an iOS app in which have the acceptable device
orientations set to Landscape Right and Landscape Left, and in all of
my view controllers, I’m returning only those two in the
supportedInterfaceOrientations method.
In iOS 6 and later, your app supports the interface orientations defined in your app’s Info.plist file
Have you tried setting it here? Then see if the problem still occurs.
Also, if this doesn't work, try setting the supportedInterfaceOrientations values in the viewWillAppear method of the ViewController that launched UIImagePicker?

iOS: Change Orientation only for few pop-up views

I have an app which runs only in Landscape mode. All working well. But I have few pop-up views like Apptentative feedback view and Twitter Sheet view, works great when in portrait mode. So how can I change orientation forcefully when loading these pop-ups and back to landscape when these pop-up closes.
You can't force an orientation change. You can only support changes in orientation. IE moving the device 90 degrees to the right.

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