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POObjective-C:UIScroller and UItextfields hidden by keyboard appearing in UIViewController
 

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    <p>I need help trying to configure in a UIViewController, the keyboard : (a) not hovering over both UITextfields, so the scroller should be positioned correctly; and (b) When the user touches the background the keyboard disappears.</p> <p>I havent tried (b) yet but im trying (a) and the code I got from googling around didn't give me the desired effects. In-fact, it makes my textboxes dissapear when I touch one of them. Im sure my implementation of activeField is also wrong. I got this example from Apple Development's Keyboard section.</p> <p>Any help would be appreciated. Thanks</p> <h2>The code I have so far is below:</h2> <pre><code>@interface FirstViewController : UIViewController { IBOutlet UITextField *emailAddress; IBOutlet UITextField *password; IBOutlet UIButton *loginButton; IBOutlet UIScrollView *scroller; BOOL keyboardShown; UITextField *activeField; ASIHTTPRequest *requestRequiringAuthentication; ASINetworkQueue *networkQueue; } - (IBAction) LoginUser:(id)sender; @property (nonatomic,retain) IBOutlet UITextField *emailAddress; @property (nonatomic,retain) IBOutlet UITextField *password; @property (nonatomic, retain) IBOutlet UIScrollView *scroller; @property (nonatomic, retain) UITextField *activeField; @property (retain) ASINetworkQueue *networkQueue; @property (retain) ASIHTTPRequest *requestRequiringAuthentication; @end @implementation FirstViewController @synthesize requestRequiringAuthentication; @synthesize networkQueue; @synthesize password; @synthesize emailAddress; @synthesize scroller; @synthesize activeField; #pragma mark - #pragma mark LifeCycle - (void)awakeFromNib { NSLog(@"awaking from nib"); [self setNetworkQueue:[[[ASINetworkQueue alloc] init] autorelease]]; } - (void)viewDidLoad { NSLog(@"viewdidload"); [super viewDidLoad]; } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)viewWillAppear:(BOOL)animated { keyboardShown = NO; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasHidden:) name:UIKeyboardDidHideNotification object:nil]; [super viewWillAppear:animated]; } - (void)viewWillDisappear:(BOOL)animated { [[NSNotificationCenter defaultCenter] removeObserver:self]; [super viewWillDisappear:animated]; } // Called when the UIKeyboardDidShowNotification is sent. - (void)keyboardWasShown:(NSNotification*)aNotification { if (keyboardShown) return; NSDictionary* info = [aNotification userInfo]; // Get the size of the keyboard. NSValue* aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; // Resize the scroll view (which is the root view of the window) CGRect viewFrame = [scroller frame]; viewFrame.size.height -= keyboardSize.height; scroller.frame = viewFrame; // Scroll the active text field into view. CGRect textFieldRect = [activeField frame]; [scroller scrollRectToVisible:textFieldRect animated:YES]; keyboardShown = YES; } // Called when the UIKeyboardDidHideNotification is sent - (void)keyboardWasHidden:(NSNotification*)aNotification { NSDictionary* info = [aNotification userInfo]; // Get the size of the keyboard. NSValue* aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; // Reset the height of the scroll view to its original value CGRect viewFrame = [scroller frame]; viewFrame.size.height += keyboardSize.height; scroller.frame = viewFrame; keyboardShown = NO; } - (void)textFieldDidBeginEditing:(UITextField *)textField { activeField = textField; } - (void)textFieldDidEndEditing:(UITextField *)textField { activeField = nil; } </code></pre>
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