Modal View Controller Won't Start in Landscape Mode

Question

Hi all.

I'm at a loss...

I have a navigation based app that has a detail view (UIWebView) with action buttons across the bottom in a UIToolbar. I want to add 'notes' when the 'notes' button is pushed. Everything works fine when the webview is in portrait mode. I press the notes button, the modal view opens fine and works great.

The problem occurs when the webview is in landscape mode. If I press the notes button, all the code to open the modal view gets called but all I get is a white screen. One comment: If I open the modal view in portrait and then rotate the device, it rotates fine into landscape mode. It just won't open correctly in landscape mode.

I have another button that brings up the mail composer which has the identical behavior. Here is the code in my UIWebViewController:

- (IBAction)addNotes:(id)sender {

 NotesViewController *notesViewController;

 // create the view controller and set it as the root view of a new navigation
 // controller

 notesViewController = [[NotesViewController alloc] initWithPrimaryKey:self.record.primaryKey];
 UINavigationController *newNavigationController =  
 [[UINavigationController alloc] initWithRootViewController:notesViewController];

 // present the navigation controller modally

 [self presentModalViewController:newNavigationController animated:YES];
 [notesViewController release]; 
 [self.view setNeedsDisplay]; // not sure if I need this!  I was trying different things...
 [self.devotionText setNeedsDisplay]; // ditto...
 [newNavigationController release];
}

Any ideas? I've tried all sorts of different things to no avail...I just get a white screen with no navigation bar (although there is a status bar at the top).

I'm desperate! I'd love some feedback!!

Thanks so much!

Beth

Answer 1

You don't need a new Navigation Controller.

- (IBAction)addNotes:(id)sender {

 NotesViewController *notesViewController;

 // create the view controller and set it as the root view of a new navigation
 // controller

 notesViewController = [[NotesViewController alloc] initWithPrimaryKey:self.record.primaryKey];

 [self.navigationController pushViewController: notesViewController animated: YES];
 [notesViewController release];
}

Answer 2

Modals don't always get information about rotations, and they get their info from the status bar, which doesn't always work right. Put this in your viewWillAppear to fix: [UIApplication sharedApplication].statusBarOrientation = self.interfaceOrientation And, if you want a navigation controller inside your modal, you need to create one.

Also, you don't need the setNeedsDisplay. That only effects the current views, not the modal you are presenting.

Answer 3

The init function for the NotesViewController is as follows:

- (id)initWithPrimaryKey:(NSInteger)key {
    // initialize the view, passing in the primary key so that we can 
    // load any existing notes
    if (self = [super initWithNibName:@"NotesViewController" bundle:nil]) {

    }
    self.primaryKey = key;

    return self;
}

Again, it works just as expected when starting in portrait and when rotating TO landscape while displaying the text...

viewDidLoad just calls setupTextView which looks like:

- (void)setupTextView
{
    self.textView = [[[UITextView alloc] initWithFrame:self.view.frame] autorelease];

    self.view.backgroundColor = [UIColor blueColor]; // for debugging

    // set up a text view for the user to enter notes into
    self.textView.textColor = [UIColor blackColor];
    self.textView.font = [UIFont fontWithName:@"Arial" size:18];
    self.textView.delegate = self;
    self.textView.backgroundColor = [UIColor redColor]; // for debugging

    // if there are previous notes, edit them else add new ones
    [self loadNotesIntoTextView];
    self.textView.returnKeyType = UIReturnKeyDefault;
    self.textView.keyboardType = UIKeyboardTypeDefault; // use the default type input method (entire keyboard)
    self.textView.scrollEnabled = YES;

    // this will cause automatic vertical resize when the table is resized
    self.textView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
    self.navigationItem.title = @"Notes";

    UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStyleBordered target:self action:@selector(backAction:)];
    self.navigationItem.leftBarButtonItem = backButton;
    [backButton release];
    [self.view addSubview: self.textView];
}

Again...thanks so much!