Push UIImagePickerController to the left

Question

I am making a camera app, which gives the user access to the Photo Library. They touch the button, and UIImagePickerControllerSourceTypeSavedPhotosAlbum pops up using presentModalViewController. When they touch a photo, I want a view to push the ImagePicker to the left and the new view to come in. The thing is, I want to keep the ImagePicker up, so when they go back to it there isn't a lag. This happens in many camera apps like NightCamera. Whenever I use [self.navigationController pushViewController:photoPreview];, it pushes the view to the main view, not the picker. When I use [picker.navigationController pushViewController:photoPreview];, nothing happens, because the picker's navigationController is nil. Does anyone know what to do?

Answer 1

Yes it is possible. There is no such thing as "modal view controller", any view controller can be presented modaly.

Since UIImagePickerController is already a UINavigationController, you can push views directly on it. So instead of

[picker.navigationController pushViewController:some_view_controller];

just do

[picker pushViewController:some_view_controller];

removing .navigationController.