objective-c - UIScrollView 和 UIKeyboard 的问题

Question

我这里有一些问题。我有一个 UITextView，当我点击里面时，它会被键盘关闭，所以，我在这里要做的是一个 UIScrollView，它让我可以看到我在 TextView 中写的内容......

到目前为止，这是我的代码：

-(void)keyboardWillShow {
    if (self.view.frame.origin.y >= 0)
    {
        [self setViewMovedUp:YES];
    }
    else if (self.view.frame.origin.y < 0)
    {
        [self setViewMovedUp:NO];
    }
}

-(void)keyboardWillHide {
    if (self.view.frame.origin.y >= 0)
    {
        [self setViewMovedUp:YES];
    }
    else if (self.view.frame.origin.y < 0)
    {
        [self setViewMovedUp:NO];
    }
}

-(void)setViewMovedUp:(BOOL)movedUp
{
    [UIView animateWithDuration:.3 animations:^{
        CGRect rect = self.view.frame;
        if (movedUp)
        {
            scrollView.contentSize = CGSizeZero;
            scrollView.frame = CGRectMake(0, 80, 320, 308);
//            rect.origin.y -= kOFFSET_FOR_KEYBOARD;
//            rect.size.height += kOFFSET_FOR_KEYBOARD;
        }
        else
        {
            scrollView.contentSize = CGSizeZero;
            scrollView.frame = CGRectMake(0, 190, 320, 308);
//            rect.origin.y += kOFFSET_FOR_KEYBOARD;
//            rect.size.height -= kOFFSET_FOR_KEYBOARD;
        }
        self.view.frame = rect;
    }];
}

- (void)viewWillDisappear:(BOOL)animated
{
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillShowNotification
                                                  object:nil];

    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIKeyboardWillHideNotification
                                                  object:nil];
}

问题是代码不能正常工作，当我点击 textView 视图而不是上升时，它下降了......

有任何想法吗？

Answer 1

我得到了所有问题的答案！

- (void)textViewDidBeginEditing:(UITextView *)textView{

    [self scrollViewAsd:130];

}

- (void)textViewDidEndEditing:(UITextView *)textView{

    [self scrollViewAsd:0];

}

- (void)scrollViewAsd:(float) inset
{

    [UIView animateWithDuration:.3 animations:^{
        scrollView.contentInset = UIEdgeInsetsMake(0, 0, inset, 0);
        scrollView.contentOffset = CGPointMake(0, inset); 

    }];
}

Answer 2

这已经UITextView是一个滚动视图。当您输入的文本多于可见时，它应该会自动滚动。此外，用户可以随时自行滚动里面的文字。