gpt4 book ai didi

ios - TextView文本未正确显示

转载 作者:行者123 更新时间:2023-11-29 02:55:45 24 4
gpt4 key购买 nike

我使用自动布局。我有一个包含其他 View 的 TextView。当键盘出现时,部分 TextView 隐藏在键盘后面。因此,我通过降低其底部约束(及其父 View 的底部)来降低其高度,以便用户可以滚动并查看整个文本。

但问题是当键盘消失时,TextView 的文本只有一半是可见的。但是当我点击它时,它会显示整个文本。

正常情况下的样子:

enter image description here

键盘出现时的样子:

enter image description here

键盘消失后的样子:

enter image description here

现在,如果我点击 TextView,它看起来与第一张图片相同。即完整的文本是可见的:

enter image description here

代码: self.messageViewTextView

// Called when keyboard is going to be displayed
- (void)keyboardWillShow:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];

// get animation info from userInfo
NSTimeInterval animationDuration;
CGRect keyboardFrame;
[[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration];
[[info objectForKey:UIKeyboardFrameBeginUserInfoKey] getValue:&keyboardFrame];

// Save constant to set back later
self.bottomConstant = self.noticeMessageBottom.constant;

// Change bottom space constraint's constant
self.noticeMessageBottom.constant = keyboardFrame.size.height + 8.0f;

[UIView animateWithDuration:animationDuration delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{

[self.messageView setNeedsLayout];
[self.messageView layoutIfNeeded];

[self.view setNeedsLayout];
[self.view layoutIfNeeded];
} completion:nil];

[self.messageView flashScrollIndicators];
}

// Called when keyboard is going to be hidden
- (void)keyboardWillHide:(NSNotification*)aNotification
{
NSDictionary* info = [aNotification userInfo];

// get animation info from userInfo
NSTimeInterval animationDuration;
CGRect keyboardFrame;
[[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] getValue:&animationDuration];
[[info objectForKey:UIKeyboardFrameBeginUserInfoKey] getValue:&keyboardFrame];

// Reset contentOffset
self.messageView.contentOffset = CGPointZero;

// Change bottom space constraint's constant
self.noticeMessageBottom.constant = self.bottomConstant;

[UIView animateWithDuration:animationDuration delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{

[self.messageView setNeedsLayout];
[self.messageView layoutIfNeeded];

[self.view setNeedsLayout];
[self.view layoutIfNeeded];
} completion:nil];
}

注意:只有当 TextViewcontentOffset(0 ,0).即用户没有滚动它或滚动回顶部。如果用户滚动它并且 contentOffset 不是 (0,0) 那么它工作正常。

最佳答案

我只是取消选中 Storyboard中 TextView 的滚动启用属性,它不再出现该问题。

enter image description here

关于ios - TextView文本未正确显示,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23929490/

24 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com