TextViewController.m

/*
     File: TextViewController.m 
 Abstract: The view controller for hosting the UITextView features of this sample. 
  Version: 2.10 
  
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 */

#import "TextViewController.h"

@implementation TextViewController

@synthesize textView;

- (void)dealloc
{
	[textView release];
	[super dealloc];
}

- (void)setupTextView
{
	self.textView = [[[UITextView alloc] initWithFrame:self.view.frame] autorelease];
	self.textView.textColor = [UIColor blackColor];
	self.textView.font = [UIFont fontWithName:@"Arial" size:18.0];
	self.textView.delegate = self;
	self.textView.backgroundColor = [UIColor whiteColor];
	
	self.textView.text = @"Now is the time for all good developers to come to serve their country.";
	self.textView.returnKeyType = UIReturnKeyDefault;
	self.textView.keyboardType = UIKeyboardTypeDefault;	// use the default type input method (entire keyboard)
	self.textView.scrollEnabled = YES;
	
    self.textView.accessibilityLabel = @"A Text View";
    
	// this will cause automatic vertical resize when the table is resized
	self.textView.autoresizingMask = UIViewAutoresizingFlexibleHeight;
	
	// note: for UITextView, if you don't like autocompletion while typing use:
	// myTextView.autocorrectionType = UITextAutocorrectionTypeNo;
	
	[self.view addSubview: self.textView];
}

- (void)viewDidLoad
{
	[super viewDidLoad];
	
	self.title = NSLocalizedString(@"TextViewTitle", @"");
	[self setupTextView];
}

// called after the view controller's view is released and set to nil.
// For example, a memory warning which causes the view to be purged. Not invoked as a result of -dealloc.
// So release any properties that are loaded in viewDidLoad or can be recreated lazily.
//
- (void)viewDidUnload
{
	[super viewDidUnload];
	
	self.textView = nil;
}

- (void)keyboardWillShow:(NSNotification *)aNotification 
{
	// the keyboard is showing so resize the table's height
	CGRect keyboardRect = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    NSTimeInterval animationDuration =
	[[[aNotification userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    CGRect frame = self.view.frame;
    frame.size.height -= keyboardRect.size.height;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    self.view.frame = frame;
    [UIView commitAnimations];
}

- (void)keyboardWillHide:(NSNotification *)aNotification
{
    // the keyboard is hiding reset the table's height
	CGRect keyboardRect = [[[aNotification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
    NSTimeInterval animationDuration =
	[[[aNotification userInfo] objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    CGRect frame = self.view.frame;
    frame.size.height += keyboardRect.size.height;
    [UIView beginAnimations:@"ResizeForKeyboard" context:nil];
    [UIView setAnimationDuration:animationDuration];
    self.view.frame = frame;
    [UIView commitAnimations];
}

- (void)viewWillAppear:(BOOL)animated 
{
	[super viewWillAppear:animated];
	
    // listen for keyboard hide/show notifications so we can properly adjust the table's height
	[[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}

- (void)viewDidDisappear:(BOOL)animated 
{
    [super viewDidDisappear:animated];
	
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillShowNotification
                                                  object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillHideNotification
                                                  object:nil];
}

#pragma mark -
#pragma mark UITextViewDelegate

- (void)saveAction:(id)sender
{
	// finish typing text/dismiss the keyboard by removing it as the first responder
	//
	[self.textView resignFirstResponder];
	self.navigationItem.rightBarButtonItem = nil;	// this will remove the "save" button
}

- (void)textViewDidBeginEditing:(UITextView *)textView
{
	// provide my own Save button to dismiss the keyboard
	UIBarButtonItem* saveItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
															target:self
															action:@selector(saveAction:)];
	self.navigationItem.rightBarButtonItem = saveItem;
	[saveItem release];
}

@end