Question

我有一个调出键盘的文本字段。键盘隐藏文本字段的底部。我已将textField放在滚动视图中，并在视图中编写了以下代码。

- (void)registerForKeyboardNotifications {
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWasShown:) name:UIKeyboardDidShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillBeHidden:) name:UIKeyboardWillHideNotification object:nil];
}

- (void)keyboardWasShown:(NSNotification *)aNotification {
    // Called when the keyboard is shown
    NSDictionary *info = [aNotification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
    _driverSignupScrollView.contentInset = contentInsets;
    _driverSignupScrollView.scrollIndicatorInsets = contentInsets;

    // If active field is hidden by keyboard, scroll it so it's visible
    CGRect aRect = self.view.frame;
    aRect.size.height -= kbSize.height;

    CGPoint activeFieldPoint = CGPointMake(_activeField.frame.origin.x, _activeField.frame.origin.y + _activeField.frame.size.height);
    if (!CGRectContainsPoint(aRect, activeFieldPoint)) {
        [_scrollView scrollRectToVisible:_activeField.frame animated:YES];
    }
}

- (void)keyboardWillBeHidden:(NSNotification *)aNotification {
    // Called when the keyboard is hidden
    UIEdgeInsets contentInsets = UIEdgeInsetsZero;
    _scrollView.contentInset = contentInsets;
    _scrollView.scrollIndicatorInsets = contentInsets;
}

但控件永远不会进入我的if (!CGRectContainsPoint(aRect, activeFieldPoint))，因此它不会向上滚动。

正在另一种方法中正确设置_activeField。

这里有什么我想念的吗？

Answer 1

查看TPKeyboardAvoiding：https://github.com/michaeltyson/TPKeyboardAvoiding

它使键盘管理非常简单。这就是Apple应该如何设计它的开始。

Answer 2

你可以把你的textField放在UIView＆amp;试着提升你的UIView。

这是sample working code

在iOS中由键盘隐藏的TextField

2 个答案: