如何防止预测词/纠正被禁用？

Question

如何防止在Xcode中禁用预测词/纠正？

我有一个Textfield，当键盘打开和关闭时它会上下移动，但当校正为Enabled / Disabled时，文本字段会跳转到视图的顶部。

我宁愿阻止预测文本被禁用，但如果不可能，我怎样才能阻止文本字段跳转到视图的顶部？

我有一个Outlet连接到文本字段的垂直空间 - 底部布局指南，如下所示：

property (weak, nonatomic) IBOutlet NSLayoutConstraint *textViewBottomConst;

以下是我的键盘willshow和willhide：

- (void)observeKeyboard {
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
    }

    - (void)keyboardWillShow:(NSNotification *)notification {
        NSDictionary *info = [notification userInfo];
        NSValue *kbFrame = [info objectForKey:UIKeyboardFrameEndUserInfoKey];

        NSTimeInterval animationDuration = [[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];
        CGRect keyboardFrame = [kbFrame CGRectValue];

        CGRect finalKeyboardFrame = [self.view convertRect:keyboardFrame fromView:self.view.window];

        int kbHeight = finalKeyboardFrame.size.height;
        int height = kbHeight + self.textViewBottomConst.constant;

        self.textViewBottomConst.constant = height;
        self.btnViewBottomConst.constant = height;
        _tvChat.scrollEnabled = YES;
        [_tvChat scrollRangeToVisible:_tvChat.selectedRange];
        [UIView animateWithDuration:animationDuration animations:^{
            [self.view layoutIfNeeded];
        }];
    }

    - (void)keyboardWillHide:(NSNotification *)notification {
        NSDictionary *info = [notification userInfo];

        NSTimeInterval animationDuration = [[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue];

        self.textViewBottomConst.constant = 10;
        self.btnViewBottomConst.constant = 10;
        [_tvChat scrollRangeToVisible:_tvChat.selectedRange];
        [UIView animateWithDuration:animationDuration animations:^{
            [self.view layoutIfNeeded];
        }];
    }