点击 UITextField 禁用菜单

Question

当点击 UITextField 时，我们如何禁用 Cut-Copy-Paste 或 Select-SelectAll 菜单。我尝试了以下代码，但没有成功。

if ([UIMenuController sharedMenuController]) {
    [UIMenuController sharedMenuController].menuVisible = NO;
}

Answer 1

如果UITextView创建一个子类并实现这个功能

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {
   if (action == @selector(paste:) || action == @selector(copy:))//and put other actions also
      return NO;
   return [super canPerformAction:action withSender:sender];
}

Answer 2

canBecomeFirstResponderhere 应该可以解决问题。确保你委托你的UITextField

- (BOOL)canBecomeFirstResponder {
    return NO;
}