UITextField如何禁用粘貼？

Question

UITextField如何禁用粘貼？

Answer 1

覆蓋canPerformAction:withSender:方法返回NO不要爲您不想讓操作：

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender 
    { 
     if (action == @selector(paste:)) 
      return NO; 
     if (action == @selector(select:)) 
      return NO; 
     if (action == @selector(selectAll:)) 
      return NO; 
     return [super canPerformAction:action withSender:sender]; 
    } 

在上面的代碼中，你需要編寫只爲貼

另一種方式

-(BOOL)canPerformAction:(SEL)action withSender:(id)sender { 
    UIMenuController *menuController = [UIMenuController sharedMenuController]; 
    if (menuController) { 
     [UIMenuController sharedMenuController].menuVisible = NO; 
    } 
    return NO; 
} 

另請檢查This link

EDITED

在iOS中7，你可以做這樣類似,,

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

爲SWIFT用戶

override public func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool { 
    if action == #selector(copy(_:)) || action == #selector(paste(_:)) { 
     return false 
    } 

    return true 
}