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POHow to let a user hit the NEXT key and jump to the next `UITextField` within a ScrollView
 

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  1. POHow to let a user hit the NEXT key and jump to the next `UITextField` within a ScrollView
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    <p>I have several <code>UITextFields</code>, my keyboard has a "NEXT" key as the return key. I'd like to let the user hit the NEXT key and jump to the next <code>UITextField</code>. I read online that the best way to do that would be to implement the function:</p> <pre><code>-(BOOL)textFieldShouldReturn:(UITextField *)textField </code></pre> <p>I did this however it is not working for me. </p> <p>Please see my .m file</p> <pre><code>#import "customerInfoViewController.h" @implementation customerInfoViewController @synthesize infoModel; @synthesize Name; @synthesize AptNum; @synthesize Street1; @synthesize Street2; @synthesize City; @synthesize Telephone; @synthesize Email1; @synthesize textFieldBeingEdited; @synthesize scrollView; @synthesize doneButton; CartSingleton *Cart; //============================================================================== -(void)viewWillAppear:(BOOL)animated { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil/*self.view.window*/]; [super viewWillAppear:animated]; Cart = [CartSingleton getSingleton]; } //============================================================================== -(void)viewWillDisappear:(BOOL)animated { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); [[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil]; [super viewWillDisappear:animated]; } //============================================================================== - (IBAction)textFieldDidBeginEditing:(UITextField *)textField { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); textFieldBeingEdited = textField; } //============================================================================== -(IBAction)textFieldDoneEditing:(id)sender { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); textFieldBeingEdited = NULL; [sender resignFirstResponder]; if (moveViewUp) { [self scrollTheView:NO]; } } //============================================================================== -(BOOL)textFieldShouldReturn:(UITextField *)textField { NSLog(@"TextField tag is, %d ", textField.tag); if ([self.Name isFirstResponder]) { [self.AptNum becomeFirstResponder]; } if ([self.AptNum isFirstResponder]) { [self.Street1 becomeFirstResponder]; } if ([self.Street1 isFirstResponder]) { [self.Street2 becomeFirstResponder]; } if ([self.Street2 isFirstResponder]) { [self.City becomeFirstResponder]; } if ([self.City isFirstResponder]) { [self.Telephone becomeFirstResponder]; } if ([self.Telephone isFirstResponder]) { [self.Email1 becomeFirstResponder]; } if ([self.Email1 isFirstResponder]) { [self.Email1 resignFirstResponder]; } return YES; } //============================================================================== -(void)keyboardWillShow:(NSNotification *)notif { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); NSDictionary *info = [notif userInfo]; NSValue *aValue = [info objectForKey:UIKeyboardFrameBeginUserInfoKey]; //NSValue *aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; float bottomPoint = (textFieldBeingEdited.frame.origin.y + textFieldBeingEdited.frame.size.height /*+ 20*/); scrollAmount = keyboardSize.height - (self.view.frame.size.height- bottomPoint); /* CGRect viewFrame = self.view.frame; viewFrame.size.height += keyboardSize.height; scrollView.frame = viewFrame; */ if(scrollAmount &gt; 0) { moveViewUp = YES; [self scrollTheView:YES]; } else { moveViewUp = NO; } } //============================================================================== -(void)scrollTheView:(BOOL)movedUp { NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.3]; CGRect rect = self.view.frame; if(movedUp) { rect.origin.y -=scrollAmount; } else { rect.origin.y +=scrollAmount; } self.view.frame = rect; [UIView commitAnimations]; } //============================================================================== - (void)viewDidLoad { [super viewDidLoad]; NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); scrollView.contentSize = self.view.frame.size; textFieldBeingEdited = NULL; //If there is already if (Cart.customerInfoObtained) { self.Name.text = Cart.customerInfo.Name; self.AptNum.text = Cart.customerInfo.AptNo; self.Street1.text = Cart.customerInfo.Street1; self.Street2.text = Cart.customerInfo.Street2; self.City.text = Cart.customerInfo.City; self.Telephone.text = Cart.customerInfo.Tel; self.Email1.text = Cart.customerInfo.Email; } } //============================================================================== -(IBAction)doneButtonPressed { NSLog(@"Done button pressed "); NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); [self dismissModalViewControllerAnimated:YES]; /* infoModel = [[customerInfoModel alloc] initWithObjects:self.Name.text AptNo:self.AptNum.text Street1:self.Street1.text Street2:self.Street2.text City:self.City.text Tel:self.Telephone.text Email:self.Email1.text]; [Cart addCustomerInfo:infoModel]; [self.navigationController popViewControllerAnimated:YES]; */ } //============================================================================== - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); // Release any cached data, images, etc. that aren't in use. } //============================================================================== - (void)viewDidUnload { [super viewDidUnload]; NSLog(@"%s %d %s", __FILE__, __LINE__, __FUNCTION__); // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } //============================================================================== - (void)dealloc { NSLog(@"deallocating %@",self); [scrollView release]; [super dealloc]; } //============================================================================== @end </code></pre> <p>I am stepping through the function:</p> <pre><code>-(BOOL)textFieldShouldReturn:(UITextField *)textField </code></pre> <p>and here is the Consoleoutput</p> <pre> TextField tag is, 6 [customerInfoViewController textFieldDidBeginEditing:] [customerInfoViewController textFieldDidBeginEditing:] [customerInfoViewController textFieldDidBeginEditing:] [customerInfoViewController textFieldDidBeginEditing:] [customerInfoViewController textFieldDidBeginEditing:] [customerInfoViewController textFieldDidBeginEditing:] </pre>
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