键盘覆盖Notes应用程序中的UITextView

Question

大家好我正在制作笔记应用程序而且遇到了一个大问题。我使用UITextView作为记事本。当键盘出现时，它会阻止UITextView中的一些文本。我在UITextView上有一个输入附件视图。我试图在互联网上找到答案，找不到一个好的答案。任何方法来解决它？这是一张图片：

Answer 1

您可能希望查看修改UITextView的contentOffset和contentInset。毕竟，UITextField是一个UIScrollView子类。

Answer 2

我决定用键盘高度减去UITextView高度：

NSDictionary* info = [notification userInfo];
kbSIZE = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue];
CGRect newTextViewFrame = self.notesTextView.frame;
newTextViewFrame.size.height -= kbSIZE.size.height;
newTextViewFrame.size.height += self.notesTextView.inputAccessoryView.frame.size.height;
self.notesTextView.frame = newTextViewFrame;

Answer 3

您必须将contentInset和scrollIndicatorInsets设置为键盘高度的UIEdgeInsets。 contentInset值使滚动高度更高，但允许您仍然在键盘下滚动内容。 scrollIndicatorInsets使滚动指示器停在键盘底部。

- (void)viewDidLoad
{
    [super viewDidLoad];

    [[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];
    CGSize kbSize = [info[UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);

    self.textView.contentInset = contentInsets;
    self.textView.scrollIndicatorInsets = contentInsets;
}

- (void)keyboardWillHide:(NSNotification *)aNotification
{
    self.textView.contentInset = UIEdgeInsetsZero;
    self.textView.scrollIndicatorInsets = UIEdgeInsetsZero;
}