Disabilita copia, incolla nel UITextField non funziona in iOS 9.x

Question

ho creato un campo di testo in una classe BBCustomUtility.h, file di classe .m e poi

+(UITextField*)createTextField: (CGRect)rect image:(NSString*)imageName tag:(int)tag secureText:(BOOL)entry placeh:(NSString*)placeholder 
{ 
    UITextField *transactionField = [ [ UITextField alloc ] initWithFrame: rect ]; 
    transactionField.background = [UIImage imageNamed:imageName]; 
    transactionField.adjustsFontSizeToFitWidth = YES; 
    transactionField.textColor = [UIColor blackColor]; 
    transactionField.font = [UIFont systemFontOfSize:17.0]; 
    transactionField.placeholder = placeholder; 
    transactionField.backgroundColor = [UIColor clearColor]; 
    transactionField.borderStyle = UITextBorderStyleNone; 
    transactionField.autocorrectionType = UITextAutocorrectionTypeNo; 
    transactionField.autocapitalizationType = UITextAutocapitalizationTypeNone; 
    transactionField.textAlignment = UITextAlignmentCenter; 
    transactionField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; 
    transactionField.keyboardType = UIKeyboardTypeDefault; 
    transactionField.returnKeyType = UIReturnKeyDone; 
    transactionField.tag = tag; 
    transactionField.delegate = self; 
    transactionField.clearButtonMode = UITextFieldViewModeWhileEditing; 
    transactionField.text = @""; 
    [ transactionField setEnabled: YES ]; 
    transactionField.secureTextEntry = entry; 
    return transactionField ; 
} 

importazione da classe comune e utilizzato in Class1 .m

mPasswordField1 = [BBCustomUtility createTextField:CGRectMake(IS_WIDTH_DEVICE/2-120, 140, 50, 50) image:@"txtField_bg_50.png" tag:1 secureText:YES placeh:[shareObj.mLabelDictionary valueForKey:@""]]; 
    mPasswordField1.keyboardType = UIKeyboardTypeNumberPad; 
    mPasswordField1.clearButtonMode = UITextFieldViewModeNever; 
    mPasswordField1.delegate = self; 
    [self.view addSubview:mPasswordField1]; 

provato a disabilitare l'opzione copia incolla sul campo di testo nei metodi indicati questi non stanno lavorando per me

1) 
    -(BOOL)canPerformAction:(SEL)action withSender:(id)sender 
    { 
     // Returning 'NO' here disables all actions on textfield 
     return NO; 
    } // not working still showing the paste option on textfield 

2)

-(BOOL)canPerformAction:(SEL)action withSender:(id)sender 
    { 
     if (action == @selector(copy:) || action == @selector(paste:)) { 
      return NO; 
     } 
     return [super canPerformAction:action withSender:sender]; 
    } // this is also not working still showing the paste option 

3)

-(BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string 
    { 

     if ([mPasswordField1 respondsToSelector:@selector(inputAssistantItem)]) 
     { 
      UITextInputAssistantItem *inputAssistantItem = [mPasswordField1 inputAssistantItem]; 
      inputAssistantItem.leadingBarButtonGroups = @[]; 
      inputAssistantItem.trailingBarButtonGroups = @[]; 
     } 
    } // this also not working 

uno può dirmi qual è l'errore che ho fatto nel mio codice.

Answer 1

Aggiungi al di sotto metodo nel codice e `s esso,

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender { 
[[NSOperationQueue mainQueue] addOperationWithBlock:^{ 
    [[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO]; 
}]; 
return [super canPerformAction:action withSender:sender]; 
} 

Sarà disabilitare ogni tipo di modifica.

Spero che questo vi aiuterà :)

Answer 2

-canPerformAction: withSender: deve essere in una sottoclasse di UITextField. Non sembra sottoclassi perché stai assegnando un UITextField.

Answer 3

//This code has side effects in the UISearchbar (white field is no more disappearing): 
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender { 
[[NSOperationQueue mainQueue] addOperationWithBlock:^{ 
[[UIMenuController sharedMenuController] setMenuVisible:NO animated:NO]; 
}]; 
return [super canPerformAction:action withSender:sender]; 
}