ios move scrollview when keyboard is over text field
ios, objective-c
Solution
Moving up textfield while clicking it, use below code . it requires only outlet of your scroll
- (void)textFieldDidBeginEditing:(UITextField *)textField {
self.scroll.contentOffset = CGPointMake(0, textField.frame.origin.y);
}
you can change the position of textfield where should appear by minus the y position value (textfield.frame.origin.y - some value)
If you want to animate the scroll you can do like this :
CGPoint newOffset = CGPointMake(0, textField.frame.origin.y-40);
[self.scroll setContentOffset: newOffset animated: YES];
Problem
please, could you correct my code, so i have an example of simple app with text field which moves up when keyboard is over it? I tried to implement it using code from from ios developer library https://developer.apple.com/library/ios/documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html but i don't know what they mean by "The active field is stored in a custom variable (called activeField in this example)" and I did probably something else wrong. Using registerForKeyboardNotifications in viewWillAppear is ok? I know there are some threads about this problem, but I am newbie and it's hard to understand them for me. And I don't want to just learn how, but why, that's why I don't want to use ready to use solution from github others advised etc. My code atm: .h: ``` #import <UIKit/UIKit.h> @interface VNViewController : UIViewController<UIScrollViewDelegate, UITextFieldDelegate> @property (weak, nonatomic) IBOutlet UITextField *texticek; @property (strong, nonatomic) IBOutlet UIScrollView *scrollView; @end ``` .m: ``` #import "VNViewController.h" @interface VNViewController () @end @implementation VNViewController @synthesize scrollView; @synthesize texticek; - (void) viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [self registerForKeyboardNotifications]; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } // Call this method somewhere in your view controller setup code. - (void)registerForKeyboardNotifications { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil]; } // Called when the UIKeyboardDidShowNotification is sent. - (void)keyboardWasShown:(NSNotification*)aNotification { NSDictionary* info = [aNotification userInfo]; CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size; UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0); scrollView.contentInset = contentInsets; scrollView.scrollIndicatorInsets = contentInsets; // If active text field is hidden by keyboard, scroll it so it's visible // Your app might not need or want this behavior. CGRect aRect = self.view.frame; aRect.size.height -= kbSize.height; if (!CGRectContainsPoint(aRect, activeField.frame.origin) ) { [self.scrollView scrollRectToVisible:activeField.frame animated:YES]; } } // Called when the UIKeyboardWillHideNotification is sent - (void)keyboardWillBeHidden:(NSNotification*)aNotification { UIEdgeInsets contentInsets = UIEdgeInsetsZero; scrollView.contentInset = contentInsets; scrollView.scrollIndicatorInsets = contentInsets; } - (void)textFieldDidBeginEditing:(UITextField *)textField { activeField = textField; } - (void)textFieldDidEndEditing:(UITextField *)textField { activeField = nil; } @end ```