UIScrollView contentInset重置不能正常工作iOS8 / 9

Question

显示/隐藏键盘时使用以下内容：

- (void)keyboardWasShown:(NSNotification *)notification
{
    NSDictionary *info = [notification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue].size;

    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height, 0.0);
    self.scrDetails.contentInset = contentInsets;
    self.scrDetails.scrollIndicatorInsets = contentInsets;
}

- (void)keyboardWillHide:(NSNotification *)notification
{
    /* Set to NO so after the keyboard is hidden, the size goes back to normal */
    self.automaticallyAdjustsScrollViewInsets = NO;

    UIEdgeInsets contentInsets = UIEdgeInsetsZero;
    self.scrDetails.contentInset = contentInsets;
    self.scrDetails.scrollIndicatorInsets = contentInsets;

    [self.view layoutIfNeeded];
}

但由于某些原因，即使在解除键盘时正确设置了尺寸

(lldb) po self.scrDetails.contentInset
 (top = 0, left = 0, bottom = 0, right = 0)

效果未在设备/模拟器上显示（滚动条保持在上一个键盘向上位置）

见图片

我使用autolayout，所以我没有直接设置contentSize。

有什么建议可能有助于追踪这一点吗？

Answer 1

您可以使用第三方类TPKeyboardAvoiding。它管理键盘。

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