TextFieldShoudReturn not being called

Question

How can I get the textfield in this method to call textfieldshouldreturn? I'm guessing its not working beause the UIView doesn't have a delegate property, but I'm not sure how to make a UIView I've created within a method conform to a protocol. I've seen several posts regarding delegation but everything I've tried hasn't worked. I'm sure its something simple. Thanks in advance.

- (void) launchCreateNewListActionSheet{
    self.listActionSheet= [[UIActionSheet alloc] initWithTitle:@"Create A New List"
                                                  delegate:self
                                         cancelButtonTitle:nil
                                    destructiveButtonTitle:nil
                                         otherButtonTitles:nil];

    UIView *addToNewList = [[UIView alloc] initWithFrame:CGRectMake(0, 44, 320, 464)];
    addToNewList.backgroundColor = [UIColor whiteColor];

    UILabel *addToNewListLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 23, 100, 20)];
    addToNewListLabel.text = @"List Name: ";

    UITextField *enterNewListName = [[UITextField alloc] initWithFrame:CGRectMake(100, 20, 180, 30)];
    enterNewListName.layer.borderWidth = 1;
    enterNewListName.layer.borderColor = [[UIColor blackColor] CGColor];
    enterNewListName.delegate = self;

    [addToNewList addSubview:addToNewListLabel];
    [addToNewList addSubview:enterNewListName];


    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc]     initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(addToExistingList)];

    UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelListPicker)];

    UIBarButtonItem *fixedCenter = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
fixedCenter.width = 180.0f;

    UIToolbar* toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
    toolbar.barStyle = UIBarStyleBlackOpaque;
    [toolbar sizeToFit];

    [toolbar setItems:@[cancelBtn, fixedCenter, doneBtn] animated:YES];

    [self.listActionSheet addSubview:toolbar];
    [self.listActionSheet addSubview:addToNewList];
    [self.listActionSheet showInView:self.view];
    [self.listActionSheet setBounds:CGRectMake(0,0,320, 464)];
} 

Here is my .h file. I have implemented as it is working for text fields in other methods.

#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#import "ZBarSDK.h"
#import "ProgressView.h"

@class ScannerViewController;

@protocol ScanViewDelegate <NSObject>;
@required
-(void)postURL:(NSURL*)url selectedAction:(NSString*)action;
@end

@interface ScannerViewController : UIViewController <ZBarReaderViewDelegate,        UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate, UIWebViewDelegate,    UIPickerViewDelegate, UIActionSheetDelegate>

    id <ScanViewDelegate> delegate;
}
@property (weak, nonatomic) IBOutlet ZBarReaderView *readerView;
@property (weak, nonatomic) IBOutlet UITableView *scannerList;
@property (retain) id delegate;

@property (strong) NSMutableArray* barCodeArray;
@property (strong) NSMutableArray* quantityArray;
@property (strong) NSURL* url;
@property (strong) NSString* action;
@property NSString *listItems;
@property NSString *listItemNames;
@property NSArray *listItemNamesArray;
@property NSArray *hrefArray;
@property int pickerViewRow;
@property (strong) UIWebView *webView;
@property (strong) ProgressView* loading;
@property BOOL isLoading;
@property (strong) UITextField *enterNewListName;
@property (strong) UITextField *addToNewListDescription;
@property (strong) NSMutableArray *textFieldArray;

-(IBAction)sendToCart:(id)sender;
-(IBAction)sendToList:(id)sender;
-(void)startLoadingURL;
@end

Here is the textfieldshouldreturn method:

-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
    if([self.textFieldArray containsObject:textField])
    {
        NSUInteger index = [self.textFieldArray indexOfObject:textField];
        NSNumber *newQuantity = [NSNumber numberWithInteger:[textField.text integerValue]];
        [self.quantityArray replaceObjectAtIndex:index withObject:newQuantity];
        NSLog(@"Your new quantity is: %@", newQuantity);
    }
    [textField resignFirstResponder];
    return YES;
}

Answer 1

The key point here is that Andres would like to use UiTextField on an UIActionSheet. UIActionSheet has a little bit different behaviour eating taps, actually it prevents a healthy use of UiTextField added to the actionsheet.

Please see this SO answer where it was found that using a custom solution is better: keyboard in UIActionSheet does not type anything

Basically it is better to use UIAlertView for a modal text input view form (please see this link) a custom view imitating UIActionSheet with more space for customisation (search eg. github as a starting point) but there's one solution for UIActionSheet too.

In order to place the UITextField in the view hierarchy where UIActionSheet doesn't steel pushes use after showing the UIActionSheet this code snippet:

    [self.listActionSheet addSubview:toolbar];
    // [self.listActionSheet addSubview:addToNewList];  // please comment-delete this line
    [self.listActionSheet showInView:self.view];
    [self.listActionSheet setBounds:CGRectMake(0,0,320, 464)];
    // this is the 2 new lines below
    UIWindow *appWindow = [UIApplication sharedApplication].keyWindow;
    [appWindow insertSubview:addToNewList aboveSubview:listActionSheet];  // you add custom view here