blocks|key|52748|text|[self.textView+scrollRangeToVisible:NSMakeRange(0,+1)];|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|52749|在viewDidLoad中|unstyled|offset|length|style|CODE|52750|entityMap^0|0|1|B|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@$G|O|H|P|I|J]]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>[self.textView scrollRangeToVisible:NSMakeRange(0, 1)];
</code></pre>

in <code>viewDidLoad</code>

blocks|key|52730|text|通过在加载内容之前以编程方式禁用textview+textview.scrollenabled+=+NO;的滚动属性|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|52731|并在加载后启用textview+textview.scrollenabled+=+YES;的滚动|52732|同时检查XIB，始终不检查Textview的滚动功能。|52733|entityMap^0|P|S|0|G|T|0|4|3|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|K|$]]

By Programmatically before loading the content disable the scrolling property of textview
 <code>textview.scrollenabled = NO;</code>

And after loading enable the scrolling of textview <code>textview.scrollenabled = YES;</code>

As well check the <code>XIB</code>, always non-check the scrolling enabled of Textview.

blocks|key|4559436|text|问题Blank+space+at+top+of+UITextView+in+iOS+10的答案提供了更清晰的最终用户体验。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4559437|在包含文本视图的视图控制器的viewDidLoad中：|style|CODE|4559438|+self.automaticallyAdjustsScrollViewInsets+=+false|code-block|syntax|javascript|4559439|在viewDidLayoutSubviews()中调用时，设置textView.setContentOffset(CGPointMake(0,0),+animated:+false)和其他一些建议确实有效，但在iPad+2和更早的设备上，当屏幕显示时，您将实际看到文本滚动。这不是您希望最终用户看到的内容。|4559440|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/18931934/blank-space-at-top-of-uitextview-in-ios-7^0|2|16|0|0|E|B|0|0|1|N|V|1O|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@$A|11|B|12|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|13|8|@]|9|@]|C|$K|L]]|$1|M|3|N|5|6|7|14|8|@$A|15|B|16|F|G]|$A|17|B|18|F|G]]|9|@]|C|$]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|C|$]]]|P|$Q|$5|R|S|T|C|$U|V]]]]

The answers for the question <a href="https://stackoverflow.com/questions/18931934/blank-space-at-top-of-uitextview-in-ios-7">Blank space at top of UITextView in iOS 10</a> provide a much cleaner end user experience. 

In <code>viewDidLoad</code> of the view controller containing the text view:

<pre><code> self.automaticallyAdjustsScrollViewInsets = false
</code></pre>

Setting <code>textView.setContentOffset(CGPointMake(0,0), animated: false)</code> and some of these other suggestions do work when called in the <code>viewDidLayoutSubviews()</code> but on older devices like iPad 2 and older you will actually see the text get scrolled when the screen is displayed. That is not something you want the end user to see.

blocks|key|52849|text|在使用这些解决方案后，我仍然有问题。这个问题显然与透明导航栏和选择自动调整视图控制器上的内容插图有关。如果你不关心文本在导航栏下面的滚动，那么最好关闭这些设置，并将文本视图的顶部限制在导航栏的底部，而不是视图控制器的顶部。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|52850|如果你像我一样希望它在向下滚动时出现在你的导航栏下面，那么对我有效的解决方案就是添加这个。|52851|-+(void)viewDidLayoutSubviews
{
++++[super+viewDidLayoutSubviews];

++++CGFloat+offset+=+self.navigationController.navigationBar.frame.size.height%2B[UIApplication+sharedApplication].statusBarFrame.size.height;

++++[self.textView+setContentOffset:CGPointMake(0,+-offset)+animated:NO];
}|code-block|syntax|javascript|52852|这只是查找导航栏和状态栏的高度，并相应地调整内容偏移量。|52853|请注意，这种方法的一个缺点是，当设备旋转时，您将最终滚动回到顶部。|52854|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I was still having problems after using these solutions. The problem definitely seems to relate to having transparent navigation bars and selecting to automatically adjust content insets on the view controller. If you don't care about your text scrolling underneath the navigation bar then it's best to leave these settings off and constrain the top of your textview to the bottom of the navigation bar, rather than to the top of the viewcontroller. 

If like me you wanted it to appear underneath your navigation bar when you scroll down; then the solution that worked for me was to add this.

<pre><code>- (void)viewDidLayoutSubviews
{
 [super viewDidLayoutSubviews];

 CGFloat offset = self.navigationController.navigationBar.frame.size.height+[UIApplication sharedApplication].statusBarFrame.size.height;

 [self.textView setContentOffset:CGPointMake(0, -offset) animated:NO];
}
</code></pre>

This just looks for the height of the navigation bar and status bar and adjusts the content offset accordingly. 

Note that one downside of this approach is that when the device rotates you'll end up scrolling back to the top.

blocks|key|4559509|text|对我来说，这段代码很好用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4559510|++++textView.attributedText+=+newText+//or+textView.text+=+...

++++//this+part+of+code+scrolls+to+top
++++textView.contentOffset.y+=+-64+//or+=+0+if+no+Navigation+Bar
++++textView.scrollEnabled+=+false
++++textView.layoutIfNeeded()
++++textView.scrollEnabled+=+true|code-block|syntax|javascript|4559511|为了滚动到准确的位置并将其显示在屏幕顶部，我使用以下代码：|4559512|++++var+scrollToLocation+=+50+//<needed+position>
++++textView.contentOffset.y+=+textView.contentSize.height
++++textView.scrollRangeToVisible(NSRange.init(location:+scrollToLocation,+length:+1))|4559513|设置contentOffset.y会滚动到文本的末尾，然后scrollRangeToVisible会向上滚动到scrollToLocation的值。因此，所需的位置出现在scrollView的第一行。|4559514|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

For me fine works this code:

<pre><code> textView.attributedText = newText //or textView.text = ...

 //this part of code scrolls to top
 textView.contentOffset.y = -64 //or = 0 if no Navigation Bar
 textView.scrollEnabled = false
 textView.layoutIfNeeded()
 textView.scrollEnabled = true
</code></pre>

For scroll to exact position and show it on top of screen I use this code:

<pre><code> var scrollToLocation = 50 //&lt;needed position&gt;
 textView.contentOffset.y = textView.contentSize.height
 textView.scrollRangeToVisible(NSRange.init(location: scrollToLocation, length: 1))
</code></pre>

Setting contentOffset.y scrolls to the end of text, and then scrollRangeToVisible scrolls up to value of scrollToLocation. Thereby, needed position appears in first line of scrollView.

blocks|key|52989|text|与其他一些答案类似，但有一个额外的好处，即您不会导致滚动到后续设备旋转的顶部。在Swift+2.2中运行良好|type|unstyled|depth|inlineStyleRanges|entityRanges|data|52990|///+Whether+view+has+laid+out+subviews+at+least+once+before.
var+viewDidLayoutSubviewsAtLeastOnce+=+false

override+func+viewDidLayoutSubviews()+{
++++super.viewDidLayoutSubviews()

++++if+!viewDidLayoutSubviewsAtLeastOnce+{
++++++++textView.setContentOffset(CGPoint(x:+0,+y:+-textView.contentInset.top),+animated:+false)
++++}

++++viewDidLayoutSubviewsAtLeastOnce+=+true
}|code-block|syntax|javascript|52991|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Similar to some other answers, but with the added benefit that you won't cause a scroll to top on subsequent device rotations. Works well in Swift 2.2

<pre><code>/// Whether view has laid out subviews at least once before.
var viewDidLayoutSubviewsAtLeastOnce = false

override func viewDidLayoutSubviews() {
 super.viewDidLayoutSubviews()

 if !viewDidLayoutSubviewsAtLeastOnce {
 textView.setContentOffset(CGPoint(x: 0, y: -textView.contentInset.top), animated: false)
 }

 viewDidLayoutSubviewsAtLeastOnce = true
}
</code></pre>

blocks|key|53067|text|Swift+3.0|type|unstyled|depth|inlineStyleRanges|entityRanges|data|53068|override+func+viewWillAppear(_+animated:+Bool)+{
++++privacyText.isScrollEnabled+=+false
}

override+func+viewDidAppear(_+animated:+Bool)+{
++++privacyText.isScrollEnabled+=+true
}|code-block|syntax|javascript|53069|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift 3.0

<pre><code>override func viewWillAppear(_ animated: Bool) {
 privacyText.isScrollEnabled = false
}

override func viewDidAppear(_ animated: Bool) {
 privacyText.isScrollEnabled = true
}
</code></pre>

blocks|key|53071|text|这对我来说是最好的！我将其放在viewDidLoad()中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|53072|//TextView+Scroll+starts+from+the+top
myTextView.contentOffset.y+=+0|code-block|syntax|javascript|53073|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This worked the best for me! I placed this within viewDidLoad().

<pre><code>//TextView Scroll starts from the top
myTextView.contentOffset.y = 0
</code></pre>

blocks|key|4559609|text|这里有另一种方法，对我来说总是有效的。Objective-C：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4559610|-+(void)viewDidAppear:(BOOL)animated+{
++++[super+viewDidAppear:animated];
++++[self.textView+setContentOffset:CGPointZero+animated:NO];
}|code-block|syntax|javascript|4559611|在Swift中：|4559612|override+func+viewDidAppear(animated:+Bool)+{
++++super.viewDidAppear(animated)
++++textView.setContentOffset(CGPointZero,+animated:+false)
}|4559613|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Here's another way to do it that always works for me. Objective-C:

<pre><code>- (void)viewDidAppear:(BOOL)animated {
 [super viewDidAppear:animated];
 [self.textView setContentOffset:CGPointZero animated:NO];
}
</code></pre>

And in Swift:

<pre><code>override func viewDidAppear(animated: Bool) {
 super.viewDidAppear(animated)
 textView.setContentOffset(CGPointZero, animated: false)
}
</code></pre>

blocks|key|4559622|text|Swift版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4559623|override+func+viewDidLayoutSubviews()+{
++++yourTextView.setContentOffset(CGPointZero,+animated:+false)
}|code-block|syntax|javascript|4559624|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Swift version:

<pre><code>override func viewDidLayoutSubviews() {
 yourTextView.setContentOffset(CGPointZero, animated: false)
}
</code></pre>

blocks|key|4559699|text|将以下函数添加到视图控制器类中...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4559700|Swift+3

override+func+viewDidLayoutSubviews()+{
++++self.mainTextView.setContentOffset(.zero,+animated:+false)
}
Swift+2.1

override+func+viewDidLayoutSubviews()+{
++++self.mainTextView.setContentOffset(CGPointZero,+animated:+false)
}
Objective+C

-+(void)viewDidLayoutSubviews+{
++++[self.mainTextView+setContentOffset:CGPointZero+animated:NO];
}|code-block|syntax|javascript|4559701|或者你在ViewDidAppear外观里面加上滚动，这样用户会看到他往上滚动到第一行|4559702|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

add the following function to your view controller class...

<pre><code>Swift 3

override func viewDidLayoutSubviews() {
 self.mainTextView.setContentOffset(.zero, animated: false)
}
Swift 2.1

override func viewDidLayoutSubviews() {
 self.mainTextView.setContentOffset(CGPointZero, animated: false)
}
Objective C

- (void)viewDidLayoutSubviews {
 [self.mainTextView setContentOffset:CGPointZero animated:NO];
}
</code></pre>

或者 你在ViewDidAppear 里面加上滚动，这样用户会看到他往上滚动到第一行

blocks|key|4559710|text|在带有属性文本的swift+4中，任何答案都对我没有帮助，我在主题中组合了一些答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4559711|override+func+viewWillAppear(_+animated:+Bool)+{
+++++super.viewWillAppear(animated)
+++++uiTextview.isScrollEnabled+=+false
}

override+func+viewDidAppear(_+animated:+Bool)+{
+++++uiTextview.isScrollEnabled+=+true
+++++uiTextview.setContentOffset(CGPoint.zero,+animated:+false)
}|code-block|syntax|javascript|4559712|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

in swift 4 with attributed text any of answer does not help me and i combine some answers in topic. 

<pre><code>override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(animated)
 uiTextview.isScrollEnabled = false
}

override func viewDidAppear(_ animated: Bool) {
 uiTextview.isScrollEnabled = true
 uiTextview.setContentOffset(CGPoint.zero, animated: false)
}
</code></pre>

blocks|key|52965|text|我就是这么做的。我将textview子类化，并且：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|52966|override+func+willMoveToSuperview(newSuperview:+UIView?)+{
++++self.scrollEnabled+=+false
}

override+func+layoutSubviews()+{
++++super.layoutSubviews()
++++self.scrollEnabled+=+true
}|code-block|syntax|javascript|52967|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is how i did it. I subclassed textview, and:

<pre><code>override func willMoveToSuperview(newSuperview: UIView?) {
 self.scrollEnabled = false
}

override func layoutSubviews() {
 super.layoutSubviews()
 self.scrollEnabled = true
}
</code></pre>

blocks|key|53051|text|从情节提要中，选择放置文本视图的视图控制器。在属性检查器中，取消选中“调整滚动视图插入”。就这样。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|53052|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

From storyboard, select the view controller on which you have you text view placed. In the attributes inspector, uncheck "Adjust Scroll View Insets". That's it.

blocks|key|52919|text|向viewdidload添加代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|52920|self.automaticallyAdjustsScrollViewInsets+=+NO;|code-block|syntax|javascript|52921|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Add code to the viewdidload

<pre><code>self.automaticallyAdjustsScrollViewInsets = NO;
</code></pre>

I have a long text coming from my JSON file but when I click the link from my UITableViewCell to go to my UIViewController page, the UITextView text loads the string content but it does not show the content from the beginning and I have to scroll up all the time. 

What I need to do?

UITextView text content doesn't start from the top

我有一个来自JSON文件的很长的文本，但是当我单击UITableViewCell中的链接转到我的UIViewController页面时，UITextView文本加载了字符串内容，但它没有从头开始显示内容，我必须一直向上滚动。我需要做什么？

问UITextView文本内容不是从顶部开始的
EN

回答 15

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问UITextView文本内容不是从顶部开始的
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