Ggtcf

iOS 11 & 12 - Swift 4.2 (Updated):

 if #available(iOS 12, *) 
 // iOS 12: Not the best solution, but it works.
 passwordTextField.textContentType = .oneTimeCode
 else 
 // iOS 11: Disables the autofill accessory view. 
 // For more information see the explanation below.
 emailTextField.textContentType = .init(rawValue: "")
 passwordTextField.textContentType = .init(rawValue: "")
 

iOS 11 explanation:

Make sure you setup all of your UITextField objects like this.

If you have for example an UITextField object where the user must enter his email address and another one where the user must enter his password assign UITextContentType("") to both of their textContentType property. Otherwise it will not work and the autoFill accessory view will still be shown.

The feature can be disabled by specifying a content type that is neither username nor password. For example, if the user should enter an email address, you could use

usernameTextField?.textContentType = .emailAddress

iOS 12 seems to recognise password textFields also by isSecureTextEntry property and not just by textContentType property, so making this accessory view disappear is not really possible unless you both set textContentType to nothing, and remove the secureEntry feature (and cause a security flaw in your app) which then prevents iOS 12 to recognise the textField as a password textField and show this annoying accessory view.

In my case the accessory caused a bug which made my app unresponsive when tapped (Which also got my app rejected in app review process). So I had to remove this feature. I didn't want to give on up this security feature so I had to solve things by my self.

The idea is to remove the secureEntry feature but add it by yourself manually. It did worked:

It can be done like that:

Swift 4 way:

First, as answered here, set textContentType to nothing:

if #available(iOS 10.0, *) 
 passwordText.textContentType = UITextContentType("")
 emailText.textContentType = UITextContentType("")

Than, declare a String variable which will later contain our textField real content:

var passwordValue = ""

Add a target to the passwordTextField, which will be called each time the textField content changes:

passwordText.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)

Now That's what will do the magic, declare the function that will handle the text replacements:

@objc func textFieldDidChange(_ textField: UITextField) 
 if textField.text!.count > 1 
 // User did copy & paste
 if passwordValue.count == 0 // Pasted into an empty textField
 passwordValue = String(textField.text!)
 else // Pasted to a non empty textField
 passwordValue += textField.text!.substring(from: passwordValue.count)
 
 else 
 // User did input by keypad
 if textField.text!.count > passwordValue.count // Added chars
 passwordValue += String(textField.text!.last!)
 else if textField.text!.count < passwordValue.count // Removed chars
 passwordValue = String(passwordValue.dropLast())
 
 
 self.passwordText.text = String(repeating: "•", count: self.passwordText.text!.count)

Finally, Set textField's autocorrectionType to .no to remove predictive text:

passwordText.autocorrectionType = .no

That's it, use passwordValue to perform your login.

Hope it'll help someone.

UPDATE

It catches pasted values also, forgot to add it before.

You can add extension for UITextContentType like this

extension UITextContentType 
 public static let unspecified = UITextContentType("unspecified")

after that, you can use it

if #available(iOS 10.0, *) 
 passwordField.textContentType = .unspecified

A very simple approach in ios11 worked for me. Suppose your iboutlets are usernametextfield and passwordtextfield. In viewDidLoad() function of your viewcontroller that holds the both outlest use the following code

usernametextfield.textContentType = UITextContentType("")
passwordtextfield.textContentType = UITextContentType("")

After this you wont see autofill accessory option when you tap on your textfields.

Objective-C

if (@available(iOS 10, *))
 self.tfEmail.textContentType = @"";
 self.tfPassword.textContentType = @"";

This worked for me.

Autofill is by default enabled for users. iOS saves all passwords in the keychain and make them available in keyboard in your apps. UITextView and UITextField automatically considered for AutoFill password. you can disable by specifying a content type that is neither username nor password but if the content type info already stored in keychain it will show in the quick bar. so better to assign empty UITextContentType type and it will not show quickbar.

Example:

 if #available(iOS 10.0, *) 
 self.textField.textContentType = UITextContentType("")
 else 
 // Fallback on earlier versions
 

Objective C version:

if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"10.0")) 
 self.passwordTextField.textContentType = @"";
 self.confirmPasswordTextField.textContentType = @"";

where

#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

You could try different answers here that conclude its likely possible to remove accessoryview. But this leaves some bugs.

How to hide inputAccessoryView without dismissing keyboard

You could try to implement a custom keyboard perhaps, only for password fields. Also try to disable suggestions for your textfield, i think that also hides the accessoryView.

EDIT:
No answer on apple forums on same question as of yet. Also i couldnt find anything regarding this in official uitextfield documentation.

https://forums.developer.apple.com/thread/82442

You can "turn off" the username/password combo detection by assigning a dummy textContentType to the password text field.

passwordFormField.textContentType = UITextContentType("dummy")

This turned off the key symbol for both the password field and the email field that preceded it, and in this way you don't use one of the predefined values and you avoid showing unrelated suggestions in the keyboard accessory view.

self.passwordTextField.autocorrectionType = NO;

It does not seem to work, the keychain sign still there,

self.passwordTextField.textContentType = UITextContentTypeName;

The code above does work, but if the users set up their Apple ID account, Then, the name of the apple id will be display on the keyboard you cannot disable it by set autocorrectionType to No, not sure if Apple still refines this autofill feature, it's quite buggy right now.

This worked for ios 12 and 10:

if (@available(iOS 10, *)) 
 passwordTextField.textContentType = UITextContentTypeStreetAddressLine2;


if (@available(iOS 12, *)) 
 passwordTextField.textContentType = UITextContentTypeOneTimeCode;

in response to @Gal Shahar Answer.

iOS 12 recognise password textFields by isSecureTextEntry property and not just by textContentType property.

Way Around to bypass Auto-fill Suggestion.

1. set isSecureTextEntry property to false.

self.passwordTextField.secureTextEntry = NO;

2. Add a UITextField Delegate Method and enable the isSecureTextEntry property.

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string 
 if (textField == self.passwordTextField && !self.passwordTextField.secureTextEntry) 
 self.passwordTextField.secureTextEntry = YES;
 

 return YES;

NOTE: -
Do NOT Use shouldBeginEditing UITextField delegate method it Will Still show Auto-filling Suggestion.
Do NOT Use textFieldDidChange UITextField delegate method it Will Auto-delete the first charachter as the it Will happen after the first charachter is displayed. And 'secureTextEntry' will empty the field.

This worked for me:

NOTE: try putting this code on the password, password confirm (if applicable), AND email textfields. I was not putting it on the email textfield and it was still popping up for the two password fields.

if #available(iOS 12, *) 
 // iOS 12: Not the best solution, but it works.
 cell.textField.textContentType = .oneTimeCode
 else 
 // iOS 11: Disables the autofill accessory view.
 cell.textField.textContentType = .init(rawValue: "")