blocks|key|1814178|text|我相信给你打电话|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814179|+tableView.setContentOffset(CGPoint(x:+0,+y:+CGFloat.greatestFiniteMagnitude),+animated:+false)|code-block|syntax|javascript|1814180|会照你说的做。|1814181|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|$]]

I believe that calling

<pre><code> tableView.setContentOffset(CGPoint(x: 0, y: CGFloat.greatestFiniteMagnitude), animated: false)
</code></pre>

will do what you want.

blocks|key|426051|text|您应该改用UITableViewScrollPositionBottom。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|426052|entityMap^0|5|V|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

You should use <code>UITableViewScrollPositionBottom</code> instead.

blocks|key|1174309|text|来自Jacob's+answer的代码如下：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1174310|-+(void)+viewDidAppear:(BOOL)animated
{
++++[super+viewDidAppear:animated];

++++if+(self.messagesTableView.contentSize.height+>+self.messagesTableView.frame.size.height)+
++++{
++++++++CGPoint+offset+=+CGPointMake(0,+self.messagesTableView.contentSize.height+-+self.messagesTableView.frame.size.height);
++++++++[self.messagesTableView+setContentOffset:offset+animated:YES];
++++}
}|code-block|syntax|javascript|1174311|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/2770189/3345644^0|2|E|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

From <a href="https://stackoverflow.com/a/2770189/3345644">Jacob's answer</a>, this is the code:

<pre><code>- (void) viewDidAppear:(BOOL)animated
{
 [super viewDidAppear:animated];

 if (self.messagesTableView.contentSize.height &gt; self.messagesTableView.frame.size.height) 
 {
 CGPoint offset = CGPointMake(0, self.messagesTableView.contentSize.height - self.messagesTableView.frame.size.height);
 [self.messagesTableView setContentOffset:offset animated:YES];
 }
}
</code></pre>

blocks|key|1814236|text|我想要用框架中显示的表格末尾来加载表格。我发现使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814237|NSIndexPath+*scrollIndexPath+=+[NSIndexPath+indexPathForRow:([self.tableView+numberOfRowsInSection:0]+-+1)+inSection:0];
[[self+tableView]+scrollToRowAtIndexPath:scrollIndexPath+atScrollPosition:UITableViewScrollPositionBottom+animated:NO];|code-block|syntax|javascript|1814238|不起作用，因为当表格高度小于框架高度时，它会给出错误。注意:我的表只有一个部分。|1814239|对我有效的解决方案是用viewWillAppear实现以下代码：|1814240|-+(void)viewWillAppear:(BOOL)animated
{
[super+viewWillAppear:animated];
//+on+the+initial+cell+load+scroll+to+the+last+row+(ie+the+latest+Note)
if+(initialLoad==TRUE)+{
++++initialLoad=FALSE;+
++++NSIndexPath+*scrollIndexPath+=+[NSIndexPath+indexPathForRow:([self.tableView+numberOfRowsInSection:0]+-+1)+inSection:0];
++++[[self+tableView]+scrollToRowAtIndexPath:scrollIndexPath+atScrollPosition:UITableViewScrollPositionBottom+animated:NO];
++++++++CGPoint+offset+=+CGPointMake(0,+(1000000.0));
++++++++[self.tableView+setContentOffset:offset+animated:NO];
++++}
}|1814241|在viewDidLoad中，BOOL+ivar+initialLoad设置为TRUE。|1814242|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I wanted the table to load with the end of the table shown in the frame. I found using

<pre><code>NSIndexPath *scrollIndexPath = [NSIndexPath indexPathForRow:([self.tableView numberOfRowsInSection:0] - 1) inSection:0];
[[self tableView] scrollToRowAtIndexPath:scrollIndexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];
</code></pre>

did not work because it gave an error when table height was less than the frame height. Note my table only has one section.

The solution that worked for me was implement the following code in viewWillAppear:

<pre><code>- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
// on the initial cell load scroll to the last row (ie the latest Note)
if (initialLoad==TRUE) {
 initialLoad=FALSE; 
 NSIndexPath *scrollIndexPath = [NSIndexPath indexPathForRow:([self.tableView numberOfRowsInSection:0] - 1) inSection:0];
 [[self tableView] scrollToRowAtIndexPath:scrollIndexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];
 CGPoint offset = CGPointMake(0, (1000000.0));
 [self.tableView setContentOffset:offset animated:NO];
 }
}
</code></pre>

The BOOL ivar initialLoad is set to TRUE in viewDidLoad.

blocks|key|1174334|text|使用上面的解决方案，这将滚动到您的表格的底部(仅当表格内容首先被加载时)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1174335|//Scroll+to+bottom+of+table
CGSize+tableSize+=+myTableView.contentSize;
[myTableView+setContentOffset:CGPointMake(0,+tableSize.height)];|code-block|syntax|javascript|1174336|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|$]]

Using the above solutions, this will scroll to the bottom of your table (only if the table content is loaded first):

<pre><code>//Scroll to bottom of table
CGSize tableSize = myTableView.contentSize;
[myTableView setContentOffset:CGPointMake(0, tableSize.height)];
</code></pre>

blocks|key|1174347|text|如果您需要滚动到内容的确切结尾，您可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1174348|-+(void)scrollToBottom
{
++++CGFloat+yOffset+=+0;

++++if+(self.tableView.contentSize.height+>+self.tableView.bounds.size.height)+{
++++++++yOffset+=+self.tableView.contentSize.height+-+self.tableView.bounds.size.height;
++++}

++++[self.tableView+setContentOffset:CGPointMake(0,+yOffset)+animated:NO];
}|code-block|syntax|javascript|1174349|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|$]]

If you need to scroll to the EXACT end of the content, you can do it like this:

<pre><code>- (void)scrollToBottom
{
 CGFloat yOffset = 0;

 if (self.tableView.contentSize.height &gt; self.tableView.bounds.size.height) {
 yOffset = self.tableView.contentSize.height - self.tableView.bounds.size.height;
 }

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

blocks|key|1814320|text|我认为最简单的方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814321|if+(self.messages.count+>+0)
{
++++[self.tableView+
++++++++scrollToRowAtIndexPath:[NSIndexPath+indexPathForRow:self.messages.count-1+
++++++++inSection:0]+
++++++++atScrollPosition:UITableViewScrollPositionBottom+animated:YES];
}|code-block|syntax|javascript|1814322|Swift+3版本：|1814323|if+messages.count+>+0+{
++++userDefinedOptionsTableView.scrollToRow(at:+IndexPath(item:messages.count-1,+section:+0),+at:+.bottom,+animated:+true)
}|1814324|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|$]]

I think the easiest way is this:

<pre><code>if (self.messages.count &gt; 0)
{
 [self.tableView 
 scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:self.messages.count-1 
 inSection:0] 
 atScrollPosition:UITableViewScrollPositionBottom animated:YES];
}
</code></pre>

Swift 3 Version:

<pre><code>if messages.count &gt; 0 {
 userDefinedOptionsTableView.scrollToRow(at: IndexPath(item:messages.count-1, section: 0), at: .bottom, animated: true)
}
</code></pre>

blocks|key|3222376|text|感谢雅各布的回答。如果有人对monotouch+c#版本感兴趣，真的很有帮助|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222377|private+void+SetScrollPositionDown()+{
++++if+(tblShoppingListItem.ContentSize.Height+>+tblShoppingListItem.Frame.Size.Height)+{
++++++++PointF+offset+=+new+PointF(0,+tblShoppingListItem.ContentSize.Height+-+tblShoppingListItem.Frame.Size.Height);
++++++++tblShoppingListItem.SetContentOffset(offset,true+);
++++}
}|code-block|syntax|javascript|3222378|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|$]]

Thanks Jacob for the answer. really helpfull if anyone interesting with monotouch c# version 

<pre><code>private void SetScrollPositionDown() {
 if (tblShoppingListItem.ContentSize.Height &gt; tblShoppingListItem.Frame.Size.Height) {
 PointF offset = new PointF(0, tblShoppingListItem.ContentSize.Height - tblShoppingListItem.Frame.Size.Height);
 tblShoppingListItem.SetContentOffset(offset,true );
 }
}
</code></pre>

blocks|key|1814393|text|在使用自动布局的iOS+7.0中，accepted+solution+by+@JacobRelkin不适用于我。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1814394|我有一个自定义的UIViewController子类，并添加了一个实例变量_tableView作为其view的子视图。我使用自动布局来定位_tableView。我试着在viewDidLoad的末尾甚至在viewWillAppear:中调用这个方法。两种方法都不起作用。|style|CODE|1814395|因此，我将以下方法添加到UIViewController的自定义子类中。|1814396|-+(void)tableViewScrollToBottomAnimated:(BOOL)animated+{
++++NSInteger+numberOfRows+=+[_tableView+numberOfRowsInSection:0];
++++if+(numberOfRows)+{
++++++++[_tableView+scrollToRowAtIndexPath:[NSIndexPath+indexPathForRow:numberOfRows-1+inSection:0]+atScrollPosition:UITableViewScrollPositionBottom+animated:animated];
++++}
}|code-block|syntax|javascript|1814397|在viewDidLoad结束时调用[self+tableViewScrollToBottomAnimated:NO]是可行的。不幸的是，它还会导致每个单元格调用tableView:heightForRowAtIndexPath:三次。|1814398|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/2770189/242933^0|H|X|0|0|8|G|11|A|1E|4|1X|A|2C|B|2T|F|0|C|G|0|0|1|B|H|15|28|Y|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@$A|13|B|14|F|G]|$A|15|B|16|F|G]|$A|17|B|18|F|G]|$A|19|B|1A|F|G]|$A|1B|B|1C|F|G]|$A|1D|B|1E|F|G]]|9|@]|C|$]]|$1|H|3|I|5|6|7|1F|8|@$A|1G|B|1H|F|G]]|9|@]|C|$]]|$1|J|3|K|5|L|7|1I|8|@]|9|@]|C|$M|N]]|$1|O|3|P|5|6|7|1J|8|@$A|1K|B|1L|F|G]|$A|1M|B|1N|F|G]|$A|1O|B|1P|F|G]]|9|@]|C|$]]|$1|Q|3|-4|5|6|7|1Q|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

The <a href="https://stackoverflow.com/a/2770189/242933">accepted solution by @JacobRelkin</a> didn't work for me in iOS 7.0 using Auto Layout.

I have a custom subclass of <code>UIViewController</code> and added an instance variable <code>_tableView</code> as a subview of its <code>view</code>. I positioned <code>_tableView</code> using Auto Layout. I tried calling this method at the end of <code>viewDidLoad</code> and even in <code>viewWillAppear:</code>. Neither worked. 

So, I added the following method to my custom subclass of <code>UIViewController</code>.

<pre><code>- (void)tableViewScrollToBottomAnimated:(BOOL)animated {
 NSInteger numberOfRows = [_tableView numberOfRowsInSection:0];
 if (numberOfRows) {
 [_tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:numberOfRows-1 inSection:0] atScrollPosition:UITableViewScrollPositionBottom animated:animated];
 }
}
</code></pre>

Calling <code>[self tableViewScrollToBottomAnimated:NO]</code> at the end of <code>viewDidLoad</code> works. Unfortunately, it also causes <code>tableView:heightForRowAtIndexPath:</code> to get called three times for every cell.

blocks|key|3222417|text|我使用的是自动布局，没有一个答案对我有效。以下是我最终成功的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222418|@property+(nonatomic,+assign)+BOOL+shouldScrollToLastRow;


-+(void)viewDidLoad+{
++++[super+viewDidLoad];

++++_shouldScrollToLastRow+=+YES;
}


-+(void)viewDidLayoutSubviews+{
++++[super+viewDidLayoutSubviews];

++++//+Scroll+table+view+to+the+last+row
++++if+(_shouldScrollToLastRow)
++++{
++++++++_shouldScrollToLastRow+=+NO;
++++++++[self.tableView+setContentOffset:CGPointMake(0,+CGFLOAT_MAX)];
++++}
}|code-block|syntax|javascript|3222419|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|$]]

I'm using autolayout and none of the answers worked for me. Here is my solution that finally worked:

<pre><code>@property (nonatomic, assign) BOOL shouldScrollToLastRow;


- (void)viewDidLoad {
 [super viewDidLoad];

 _shouldScrollToLastRow = YES;
}


- (void)viewDidLayoutSubviews {
 [super viewDidLayoutSubviews];

 // Scroll table view to the last row
 if (_shouldScrollToLastRow)
 {
 _shouldScrollToLastRow = NO;
 [self.tableView setContentOffset:CGPointMake(0, CGFLOAT_MAX)];
 }
}
</code></pre>

blocks|key|1814421|text|对于Swift：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814422|if+tableView.contentSize.height+>+tableView.frame.size.height+{
++++let+offset+=+CGPoint(x:+0,+y:+tableView.contentSize.height+-+tableView.frame.size.height)
++++tableView.setContentOffset(offset,+animated:+false)
}|code-block|syntax|javascript|1814423|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|$]]

For Swift:

<pre><code>if tableView.contentSize.height &gt; tableView.frame.size.height {
 let offset = CGPoint(x: 0, y: tableView.contentSize.height - tableView.frame.size.height)
 tableView.setContentOffset(offset, animated: false)
}
</code></pre>

blocks|key|1174422|text|实际上，在swift中有一种“更快”的方法是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1174423|var+lastIndex+=+NSIndexPath(forRow:+self.messages.count+-+1,+inSection:+0)
self.messageTableView.scrollToRowAtIndexPath(lastIndex,+atScrollPosition:+UITableViewScrollPosition.Bottom,+animated:+true)|code-block|syntax|javascript|1174424|对我来说太完美了。|1174425|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|$]]

Actually a "Swifter" way to do it in swift is :

<pre><code>var lastIndex = NSIndexPath(forRow: self.messages.count - 1, inSection: 0)
self.messageTableView.scrollToRowAtIndexPath(lastIndex, atScrollPosition: UITableViewScrollPosition.Bottom, animated: true)
</code></pre>

work Perfect for me.

blocks|key|1814457|text|在iOS中，这对我来说很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814458|CGFloat+height+=+self.inputTableView.contentSize.height;
if+(height+>+CGRectGetHeight(self.inputTableView.frame))+{
++++height+-=+(CGRectGetHeight(self.inputTableView.frame)+-+CGRectGetHeight(self.navigationController.navigationBar.frame));
}
else+{
++++height+=+0;
}
[self.inputTableView+setContentOffset:CGPointMake(0,+height)+animated:animated];|code-block|syntax|javascript|1814459|需要从viewDidLayoutSubviews调用它|offset|length|style|CODE|1814460|entityMap^0|0|0|3|L|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]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

In iOS this worked fine for me

<pre><code>CGFloat height = self.inputTableView.contentSize.height;
if (height &gt; CGRectGetHeight(self.inputTableView.frame)) {
 height -= (CGRectGetHeight(self.inputTableView.frame) - CGRectGetHeight(self.navigationController.navigationBar.frame));
}
else {
 height = 0;
}
[self.inputTableView setContentOffset:CGPointMake(0, height) animated:animated];
</code></pre>

It needs to be called from <code>viewDidLayoutSubviews</code>

blocks|key|1174450|text|当然是个Bug。您可能在代码中的某个地方使用了table.estimatedRowHeight+=+value+(例如100)。将此值替换为您认为行高可以获得的最大值，例如500.。这应该可以结合以下代码来解决问题：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|BOLD|entityRanges|data|1174451|//auto+scroll+down+example
let+delay+=+0.1+*+Double(NSEC_PER_SEC)
let+time+=+dispatch_time(DISPATCH_TIME_NOW,+Int64(delay))

dispatch_after(time,+dispatch_get_main_queue(),+{
++++self.table.scrollToRowAtIndexPath(NSIndexPath(forRow:+self.Messages.count+-+1,+inSection:+0),+atScrollPosition:+UITableViewScrollPosition.Bottom,+animated:+false)
})|code-block|syntax|javascript|1174452|entityMap^0|N|W|1S|J|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|D]]|E|@]|F|$]]|$1|G|3|H|5|I|7|S|8|@]|E|@]|F|$J|K]]|$1|L|3|-4|5|6|7|T|8|@]|E|@]|F|$]]]|M|$]]

Is of course a Bug.
Probably somewhere in your code you use <code>table.estimatedRowHeight = value</code> (for example 100). Replace this value by the highest value you think a row height could get, for example 500..
This should solve the problem in combination with following code:

<pre><code>//auto scroll down example
let delay = 0.1 * Double(NSEC_PER_SEC)
let time = dispatch_time(DISPATCH_TIME_NOW, Int64(delay))

dispatch_after(time, dispatch_get_main_queue(), {
 self.table.scrollToRowAtIndexPath(NSIndexPath(forRow: self.Messages.count - 1, inSection: 0), atScrollPosition: UITableViewScrollPosition.Bottom, animated: false)
})
</code></pre>

blocks|key|1814555|text|动画滚动scrollRectToVisible:CGRectMake(0，self.tableViewInfo.contentSize.height-self.tableViewInfo.height，self.tableViewInfo.width，self.tableViewInfo.height)+self.tableViewInfo+:是；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814556|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|$]]

[self.tableViewInfo scrollRectToVisible:CGRectMake(0, self.tableViewInfo.contentSize.height-self.tableViewInfo.height, self.tableViewInfo.width, self.tableViewInfo.height) animated:YES];

blocks|key|1814668|text|被接受的答案不适用于我的表(数千行，动态加载)，但以下代码有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814669|-+(void)scrollToBottom:(id)sender+{
++++if+([self.sections+count]+>+0)+{
++++++++NSInteger+idx+=+[self.sections+count]+-+1;
++++++++CGRect+sectionRect+=+[self.tableView+rectForSection:idx];
++++++++sectionRect.size.height+=+self.tableView.frame.size.height;
++++++++[self.tableView+scrollRectToVisible:sectionRect+animated:NO];
++++}
}|code-block|syntax|javascript|1814670|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|$]]

The accepted answer didn't work with my table (thousands of rows, dynamic loading) but the code below works:

<pre><code>- (void)scrollToBottom:(id)sender {
 if ([self.sections count] &gt; 0) {
 NSInteger idx = [self.sections count] - 1;
 CGRect sectionRect = [self.tableView rectForSection:idx];
 sectionRect.size.height = self.tableView.frame.size.height;
 [self.tableView scrollRectToVisible:sectionRect animated:NO];
 }
}
</code></pre>

blocks|key|1814696|text|不需要任何滚动，只需使用以下代码即可完成：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1814697|[YOURTABLEVIEWNAME+setContentOffset:CGPointMake(0,+CGFLOAT_MAX)];|code-block|syntax|javascript|1814698|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|$]]

No need for any scrolling you can just do it by using this code:

<pre><code>[YOURTABLEVIEWNAME setContentOffset:CGPointMake(0, CGFLOAT_MAX)];
</code></pre>

blocks|key|3222686|text|在做了大量的修改之后，这是对我有效的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222687|var+viewHasAppeared+=+false

override+func+viewDidLayoutSubviews()+{
++++super.viewDidLayoutSubviews()
++++if+!viewHasAppeared+{+goToBottom()+}
}

override+func+viewDidAppear(animated:+Bool)+{
++++super.viewDidAppear(animated)
++++viewHasAppeared+=+true
}

private+func+goToBottom()+{
++++guard+data.count+>+0+else+{+return+}
++++let+indexPath+=+NSIndexPath(forRow:+data.count+-+1,+inSection:+0)
++++tableView.scrollToRowAtIndexPath(indexPath,+atScrollPosition:+.Bottom,+animated:+false)
++++tableView.layoutIfNeeded()
}|code-block|syntax|javascript|3222688|事实证明，关键不是像一些人所说的那样将scrollToRowAtIndexPath包装在dispatch_async中，而是简单地调用layoutIfNeeded。|offset|length|style|CODE|3222689|我对此的理解是，在当前线程中调用scroll方法可以确保在显示视图之前立即设置滚动偏移量。当我调度到主线程时，视图在滚动生效之前显示了一段时间。|3222690|(还要注意，您需要viewHasAppeared标志，因为您不希望每次调用viewDidLayoutSubviews时都使用goToBottom。例如，只要方向发生变化，它就会被调用。)|3222691|entityMap^0|0|0|J|M|18|E|1V|E|0|0|9|F|11|L|1Q|A|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]|$I|Z|J|10|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|12|8|@$I|13|J|14|K|L]|$I|15|J|16|K|L]|$I|17|J|18|K|L]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|R|$]]

After a lot of fiddling this is what worked for me:

<pre><code>var viewHasAppeared = false

override func viewDidLayoutSubviews() {
 super.viewDidLayoutSubviews()
 if !viewHasAppeared { goToBottom() }
}

override func viewDidAppear(animated: Bool) {
 super.viewDidAppear(animated)
 viewHasAppeared = true
}

private func goToBottom() {
 guard data.count &gt; 0 else { return }
 let indexPath = NSIndexPath(forRow: data.count - 1, inSection: 0)
 tableView.scrollToRowAtIndexPath(indexPath, atScrollPosition: .Bottom, animated: false)
 tableView.layoutIfNeeded()
}
</code></pre>

The key turned out to be not wrapping <code>scrollToRowAtIndexPath</code> inside of <code>dispatch_async</code> as some have suggested, but simply following it with a call to <code>layoutIfNeeded</code>.

My understanding of this is, calling the scroll method in the current thread guarantees that the scroll offset is set immediately, before the view is displayed. When I was dispatching to the main thread, the view was getting displayed for an instant before the scroll took effect.

(Also NB you need the <code>viewHasAppeared</code> flag because you don't want to <code>goToBottom</code> every time <code>viewDidLayoutSubviews</code> is called. It gets called for example whenever the orientation changes.)

blocks|key|1171842|text|这是我在Swift+2.0中实现的一个扩展。这些函数应在加载tableview后调用：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1171843|import+UIKit

extension+UITableView+{
++++func+setOffsetToBottom(animated:+Bool)+{
++++++++self.setContentOffset(CGPointMake(0,+self.contentSize.height+-+self.frame.size.height),+animated:+true)
++++}

++++func+scrollToLastRow(animated:+Bool)+{
++++++++if+self.numberOfRowsInSection(0)+>+0+{
++++++++++++self.scrollToRowAtIndexPath(NSIndexPath(forRow:+self.numberOfRowsInSection(0)+-+1,+inSection:+0),+atScrollPosition:+.Bottom,+animated:+animated)
++++++++}
++++}
}|code-block|syntax|javascript|1171844|entityMap^0|U|9|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Here's an extension that I implemented in Swift 2.0. These functions should be called after the <code>tableview</code> has been loaded:

<pre><code>import UIKit

extension UITableView {
 func setOffsetToBottom(animated: Bool) {
 self.setContentOffset(CGPointMake(0, self.contentSize.height - self.frame.size.height), animated: true)
 }

 func scrollToLastRow(animated: Bool) {
 if self.numberOfRowsInSection(0) &gt; 0 {
 self.scrollToRowAtIndexPath(NSIndexPath(forRow: self.numberOfRowsInSection(0) - 1, inSection: 0), atScrollPosition: .Bottom, animated: animated)
 }
 }
}
</code></pre>

blocks|key|3222775|text|使用这个简单的代码来滚动tableView+bottom|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3222776|NSInteger+rows+=+[tableName+numberOfRowsInSection:0];
if(rows+>+0)+{
++++[tableName+scrollToRowAtIndexPath:[NSIndexPath+indexPathForRow:rows-1+inSection:0]
+++++++++++++++++++++atScrollPosition:UITableViewScrollPositionBottom
+++++++++++++++++++++++++++++animated:YES];
}|code-block|syntax|javascript|3222777|entityMap^0|0|S|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Use this simple code to scroll tableView bottom

<pre><code>NSInteger rows = [tableName numberOfRowsInSection:0];
if(rows &gt; 0) {
 [tableName scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:rows-1 inSection:0]
 atScrollPosition:UITableViewScrollPositionBottom
 animated:YES];
}
</code></pre>

blocks|key|3222841|text|如果您正在以编程方式为tableview设置frame，请确保正确设置了frame。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222842|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|$]]

If you are setting up frame for tableview programmatically, make sure you are setting frame correctly.

blocks|key|3222873|text|在Swift中，您只需要|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222874|self.tableView.scrollToNearestSelectedRowAtScrollPosition(UITableViewScrollPosition.Bottom,+animated:+true)|code-block|syntax|javascript|3222875|使其自动滚动到按钮|3222876|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|$]]

In Swift, you just need

<pre><code>self.tableView.scrollToNearestSelectedRowAtScrollPosition(UITableViewScrollPosition.Bottom, animated: true)
</code></pre>

to make it automatically scroll to the buttom

blocks|key|426429|text|如果您必须在向下滚动之前异步加载数据，以下是可能的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426430|tableView.alpha+=+0+//+We+want+animation!
lastMessageShown+=+false+//+This+is+ivar

viewModel.fetch+{+[unowned+self]+result+in
++++self.tableView.reloadData()

++++if+!self.lastMessageShown+{
++++++++dispatch_async(dispatch_get_main_queue())+{+[unowned+self]+in
++++++++++++if+self.rowCount+>+0+{
++++++++++++++++self.tableView.scrollToRowAtIndexPath(NSIndexPath(forRow:+self.rowCount,+inSection:+0),+atScrollPosition:+.Bottom,+animated:+false)
++++++++++++}

++++++++++++UIView.animateWithDuration(0.1)+{
++++++++++++++++self.tableView.alpha+=+1
++++++++++++++++self.lastMessageShown+=+true+//+Do+it+once
++++++++++++}
++++++++}
++++}
}|code-block|syntax|javascript|426431|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|$]]

If you have to load the data asynchronously prior to scrolling down, here's the possible solution:

<pre><code>tableView.alpha = 0 // We want animation!
lastMessageShown = false // This is ivar

viewModel.fetch { [unowned self] result in
 self.tableView.reloadData()

 if !self.lastMessageShown {
 dispatch_async(dispatch_get_main_queue()) { [unowned self] in
 if self.rowCount &gt; 0 {
 self.tableView.scrollToRowAtIndexPath(NSIndexPath(forRow: self.rowCount, inSection: 0), atScrollPosition: .Bottom, animated: false)
 }

 UIView.animateWithDuration(0.1) {
 self.tableView.alpha = 1
 self.lastMessageShown = true // Do it once
 }
 }
 }
}
</code></pre>

blocks|key|426437|text|对于Swift+3(+Xcode+8.1+)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426438|override+func+viewDidAppear(_+animated:+Bool)+{
++++let+numberOfSections+=+self.tableView.numberOfSections
++++let+numberOfRows+=+self.tableView.numberOfRows(inSection:+numberOfSections-1)

++++let+indexPath+=+IndexPath(row:+numberOfRows-1+,+section:+numberOfSections-1)
++++self.tableView.scrollToRow(at:+indexPath,+at:+UITableViewScrollPosition.middle,+animated:+true)
}|code-block|syntax|javascript|426439|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|$]]

For Swift 3 ( Xcode 8.1 ):

<pre><code>override func viewDidAppear(_ animated: Bool) {
 let numberOfSections = self.tableView.numberOfSections
 let numberOfRows = self.tableView.numberOfRows(inSection: numberOfSections-1)

 let indexPath = IndexPath(row: numberOfRows-1 , section: numberOfSections-1)
 self.tableView.scrollToRow(at: indexPath, at: UITableViewScrollPosition.middle, animated: true)
}
</code></pre>

blocks|key|3222919|text|在Swift+3.0中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3222920|self.tableViewFeeds.setContentOffset(CGPoint(x:+0,+y:+CGFLOAT_MAX),+animated:+true)|code-block|syntax|javascript|3222921|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 3.0

<pre><code>self.tableViewFeeds.setContentOffset(CGPoint(x: 0, y: CGFLOAT_MAX), animated: true)
</code></pre>

blocks|key|1174694|text|在swift+3.0中，如果你想去tableview的任何特定的单元格，改变单元格的索引值，比如改变"self.yourArr.count“值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1174695|self.yourTable.reloadData()
self.scrollToBottom()+
func+scrollToBottom(){
++++DispatchQueue.global(qos:+.background).async+{
++++++++let+indexPath+=+IndexPath(row:+self.yourArr.count-1,+section:+0)
++++++++self.tblComment.scrollToRow(at:+indexPath,+at:+.bottom,+animated:+true)
++++}
}|code-block|syntax|javascript|1174696|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 3.0 
If you want to go any particular Cell of tableview Change cell index Value like change "self.yourArr.count" value .

<pre><code>self.yourTable.reloadData()
self.scrollToBottom() 
func scrollToBottom(){
 DispatchQueue.global(qos: .background).async {
 let indexPath = IndexPath(row: self.yourArr.count-1, section: 0)
 self.tblComment.scrollToRow(at: indexPath, at: .bottom, animated: true)
 }
}
</code></pre>

blocks|key|426484|text|swift+3滚动到底部的功能|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|426485|+override+func+viewWillAppear(_+animated:+Bool)+{
++++++++super.viewWillAppear(false)
++++++++//scroll+down
++++++++if+lists.count+>+2+{
++++++++++++let+numberOfSections+=+self.tableView.numberOfSections
++++++++++++let+numberOfRows+=+self.tableView.numberOfRows(inSection:+numberOfSections-1)
++++++++++++let+indexPath+=+IndexPath(row:+numberOfRows-1+,+section:+numberOfSections-1)
++++++++++++self.tableView.scrollToRow(at:+indexPath,+at:+UITableViewScrollPosition.middle,+animated:+true)
++++++++}
++++}|code-block|syntax|javascript|426486|entityMap^0|0|7|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Function on swift 3 scroll to bottom

<pre><code> override func viewWillAppear(_ animated: Bool) {
 super.viewWillAppear(false)
 //scroll down
 if lists.count &gt; 2 {
 let numberOfSections = self.tableView.numberOfSections
 let numberOfRows = self.tableView.numberOfRows(inSection: numberOfSections-1)
 let indexPath = IndexPath(row: numberOfRows-1 , section: numberOfSections-1)
 self.tableView.scrollToRow(at: indexPath, at: UITableViewScrollPosition.middle, animated: true)
 }
 }
</code></pre>

blocks|key|1171988|text|func+scrollToBottom()+{

++++let+sections+=+self.chatTableView.numberOfSections

++++if+sections+>+0+{

++++++++let+rows+=+self.chatTableView.numberOfRows(inSection:+sections+-+1)

++++++++let+last+=+IndexPath(row:+rows+-+1,+section:+sections+-+1)

++++++++DispatchQueue.main.async+{

++++++++++++self.chatTableView.scrollToRow(at:+last,+at:+.bottom,+animated:+false)
++++++++}
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1171989|您应该添加|unstyled|1171990|DispatchQueue.main.async+{
++++++++++++self.chatTableView.scrollToRow(at:+last,+at:+.bottom,+animated:+false)
++++++++}|1171991|否则它不会滚动到底部。|1171992|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>func scrollToBottom() {

 let sections = self.chatTableView.numberOfSections

 if sections &gt; 0 {

 let rows = self.chatTableView.numberOfRows(inSection: sections - 1)

 let last = IndexPath(row: rows - 1, section: sections - 1)

 DispatchQueue.main.async {

 self.chatTableView.scrollToRow(at: last, at: .bottom, animated: false)
 }
 }
}
</code></pre>

you should add 

<pre><code>DispatchQueue.main.async {
 self.chatTableView.scrollToRow(at: last, at: .bottom, animated: false)
 }
</code></pre>

or it will not scroll to bottom.

blocks|key|1174745|text|详细信息|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1174746|1174747|Xcode+8.3.2、swift+3.1|unordered-list-item|1174748|Xcode+10.2+(10E125)、Swift+5|1174749|1174750|代码|1174751|import+UIKit

extension+UITableView+{
++++func+scrollToBottom(animated:+Bool)+{
++++++++let+y+=+contentSize.height+-+frame.size.height
++++++++if+y+<+0+{+return+}
++++++++setContentOffset(CGPoint(x:+0,+y:+y),+animated:+animated)
++++}
}|code-block|syntax|javascript|1174752|用法|1174753|tableView.scrollToBottom(animated:+true)|1174754|完整样本|1174755|1174756|别忘了粘贴解决方案代码！|blockquote|1174757|1174758|1174759|import+UIKit

class+ViewController:+UIViewController+{

++++private+weak+var+tableView:+UITableView?
++++private+lazy+var+cellReuseIdentifier+=+"CellReuseIdentifier"

++++override+func+viewDidLoad()+{
++++++++super.viewDidLoad()
++++++++let+tableView+=+UITableView(frame:+view.frame)
++++++++view.addSubview(tableView)
++++++++tableView.register(UITableViewCell.self,+forCellReuseIdentifier:+cellReuseIdentifier)
++++++++self.tableView+=+tableView
++++++++tableView.dataSource+=+self
++++++++tableView.performBatchUpdates(nil)+{+[weak+self]+result+in
++++++++++++if+result+{+self?.tableView?.scrollToBottom(animated:+true)+}
++++++++}
++++}
}

extension+ViewController:+UITableViewDataSource+{

++++func+numberOfSections(in+tableView:+UITableView)+->+Int+{
++++++++return+1
++++}

++++func+tableView(_+tableView:+UITableView,+numberOfRowsInSection+section:+Int)+->+Int+{
++++++++return+100
++++}

++++func+tableView(_+tableView:+UITableView,+cellForRowAt+indexPath:+IndexPath)+->+UITableViewCell+{
++++++++let+cell+=+tableView.dequeueReusableCell(withIdentifier:+cellReuseIdentifier,+for:+indexPath+)
++++++++cell.textLabel?.text+=+"\(indexPath)"
++++++++return+cell
++++}
}|1174760|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|16|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|17|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|18|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1A|8|@]|9|@]|A|$]]|$1|K|3|L|5|M|7|1B|8|@]|9|@]|A|$N|O]]|$1|P|3|Q|5|6|7|1C|8|@]|9|@]|A|$]]|$1|R|3|S|5|M|7|1D|8|@]|9|@]|A|$N|O]]|$1|T|3|U|5|6|7|1E|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|W|3|X|5|Y|7|1G|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|11|3|12|5|M|7|1J|8|@]|9|@]|A|$N|O]]|$1|13|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|14|$]]

<h2>Details</h2>

<ul>
<li>Xcode 8.3.2, swift 3.1</li>
<li>Xcode 10.2 (10E125), Swift 5</li>
</ul>

<h2>Code</h2>

<pre><code>import UIKit

extension UITableView {
 func scrollToBottom(animated: Bool) {
 let y = contentSize.height - frame.size.height
 if y &lt; 0 { return }
 setContentOffset(CGPoint(x: 0, y: y), animated: animated)
 }
}
</code></pre>

<h2>Usage</h2>

<pre><code>tableView.scrollToBottom(animated: true)
</code></pre>

<h2>Full sample</h2>

<blockquote>
 Do not forget to paste solution code!
</blockquote>

<pre><code>import UIKit

class ViewController: UIViewController {

 private weak var tableView: UITableView?
 private lazy var cellReuseIdentifier = "CellReuseIdentifier"

 override func viewDidLoad() {
 super.viewDidLoad()
 let tableView = UITableView(frame: view.frame)
 view.addSubview(tableView)
 tableView.register(UITableViewCell.self, forCellReuseIdentifier: cellReuseIdentifier)
 self.tableView = tableView
 tableView.dataSource = self
 tableView.performBatchUpdates(nil) { [weak self] result in
 if result { self?.tableView?.scrollToBottom(animated: true) }
 }
 }
}

extension ViewController: UITableViewDataSource {

 func numberOfSections(in tableView: UITableView) -&gt; Int {
 return 1
 }

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -&gt; Int {
 return 100
 }

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -&gt; UITableViewCell {
 let cell = tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier, for: indexPath )
 cell.textLabel?.text = "\(indexPath)"
 return cell
 }
}
</code></pre>

blocks|key|3223089|text|我相信旧的解决方案不适用于swift3。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3223090|如果你知道表中的行数，你可以使用：|3223091|tableView.scrollToRow(
++++at:+IndexPath(item:+listCountInSection-1,+section:+sectionCount+-+1+),+
++++at:+.top,+
++++animated:+true)|code-block|syntax|javascript|3223092|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I believe old solutions do not work with swift3. 

If you know number rows in table you can use : 

<pre><code>tableView.scrollToRow(
 at: IndexPath(item: listCountInSection-1, section: sectionCount - 1 ), 
 at: .top, 
 animated: true)
</code></pre>

blocks|key|3223132|text|在iOS+12上，公认的答案似乎被打破了。我让它与下面的扩展一起工作|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3223133|import+UIKit

extension+UITableView+{
++++public+func+scrollToBottom(animated:+Bool+=+true)+{
++++++++guard+let+dataSource+=+dataSource+else+{
++++++++++++return
++++++++}

++++++++let+sections+=+dataSource.numberOfSections?(in:+self)+??+1
++++++++let+rows+=+dataSource.tableView(self,+numberOfRowsInSection:+sections-1)
++++++++let+bottomIndex+=+IndexPath(item:+rows+-+1,+section:+sections+-+1)

++++++++scrollToRow(at:+bottomIndex,
++++++++++++++++++++at:+.bottom,
++++++++++++++++++++animated:+animated)
++++}
}|code-block|syntax|javascript|3223134|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|$]]

On iOS 12 the accepted answer seems to be broken. I had it working with the following extension

<pre><code>

import UIKit

extension UITableView {
 public func scrollToBottom(animated: Bool = true) {
 guard let dataSource = dataSource else {
 return
 }

 let sections = dataSource.numberOfSections?(in: self) ?? 1
 let rows = dataSource.tableView(self, numberOfRowsInSection: sections-1)
 let bottomIndex = IndexPath(item: rows - 1, section: sections - 1)

 scrollToRow(at: bottomIndex,
 at: .bottom,
 animated: animated)
 }
}
</code></pre>

blocks|key|426570|text|我找到了另一个好方法，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426571|func+yourFunc()+{
++++//tableView.reloadData()
++++self.perform(#selector(scrollToBottom),+with:+nil,+afterDelay:+0.1)
}

@objc+func+scrollToBottom()+{
++++self.tableView.scrollToRow(at:+IndexPath(row:+0,+section:+self.mesArr.count+-+1),+at:+.bottom,+animated:+false)
}|code-block|syntax|javascript|426572|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|$]]

I found another good way, as follows:

<pre><code>func yourFunc() {
 //tableView.reloadData()
 self.perform(#selector(scrollToBottom), with: nil, afterDelay: 0.1)
}

@objc func scrollToBottom() {
 self.tableView.scrollToRow(at: IndexPath(row: 0, section: self.mesArr.count - 1), at: .bottom, animated: false)
}
</code></pre>

blocks|key|3223204|text|在tableView底部滚动最安全的方式是使用"tableView.scrollRectToVisible“。在调用tableView.reloadData()之后使用。Swift+5中的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3223205|private+func+scrollAtTheBottom()+{
++++let+lastIndexPath+=+IndexPath(row:+state.myItemsArray.count+-+1,+section:+0)
++++let+lastCellPosition+=+tableView.rectForRow(at:+lastIndexPath)
++++tableView.scrollRectToVisible(lastCellPosition,+animated:+true)
}|code-block|syntax|javascript|3223206|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|$]]

The safest way to scroll at the bottom of tableView is to use "tableView.scrollRectToVisible". Use after calling tableView.reloadData().
In Swift 5

<pre><code>private func scrollAtTheBottom() {
 let lastIndexPath = IndexPath(row: state.myItemsArray.count - 1, section: 0)
 let lastCellPosition = tableView.rectForRow(at: lastIndexPath)
 tableView.scrollRectToVisible(lastCellPosition, animated: true)
}
</code></pre>

blocks|key|426606|text|Swift+5是解决这个问题的一个简单方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|426607|步骤：->+1-当ViewDidLoad()时，则滚动2-+customTableView是IBoutlet的tableView变量数据:+String+=+"Hello"，"This"，"+is+"，"Your"，"World“|426608|+++override+func+viewDidLoad()+{
+++super.viewDidLoad()
++
3-+In+viewDidLoad+we+need+to+tell+about+indexPath
+++///+data.count-1+will+give+last+cell+
+++let+indexPath+=+IndexPath(row:+data.count+-+1,+section:0)

+++///+1st+Parameter:+(at)+will+use+for+indexPath
+++///+2nd+Parameter:+(at)+will+use+for+position's+scroll+view
+++///+3rd+Parameter:+(animated)+will+show+animation+when+screen+will+appear

+++customtableView.scrollToRow(at:indexPath,+at:.top,+animated:true)
++++///+Reload+CustomTableView
+++customTableView.reloadData()|code-block|syntax|javascript|426609|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Swift 5
Here is a simple way to solve this problem
Steps:-&gt;
1- When ViewDidLoad(), Then it will scroll
2- customTableView is IBoutlet's tableView
var data: [String] = [&quot;Hello&quot;, &quot;This&quot;,&quot;is&quot;,&quot;Your&quot;,&quot;World&quot;]
<pre><code> override func viewDidLoad() {
 super.viewDidLoad()
 
3- In viewDidLoad we need to tell about indexPath
 /// data.count-1 will give last cell 
 let indexPath = IndexPath(row: data.count - 1, section:0)

 /// 1st Parameter: (at) will use for indexPath
 /// 2nd Parameter: (at) will use for position's scroll view
 /// 3rd Parameter: (animated) will show animation when screen will appear

 customtableView.scrollToRow(at:indexPath, at:.top, animated:true)
 /// Reload CustomTableView
 customTableView.reloadData()
</code></pre>

blocks|key|1815392|text|在一行代码中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1815393|tableView.scrollToRow(at:+IndexPath(row:+data.count+-+1,+section:+0),+at:+.bottom,+animated:+true)|code-block|syntax|javascript|1815394|这个代码比公认的答案更清晰。|1815395|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|$]]

In one line:
<pre><code>tableView.scrollToRow(at: IndexPath(row: data.count - 1, section: 0), at: .bottom, animated: true)
</code></pre>
This code is IMHO more clear than the accepted answer.

I have a <code>UITableView</code> that is populated with cells of a variable height. I would like the table to scroll to the bottom when the view is pushed into view.

I currently have the following function

<pre><code>NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[log count]-1 inSection:0];
[self.table scrollToRowAtIndexPath:indexPath atScrollPosition:UITableViewScrollPositionBottom animated:NO];
</code></pre>

log is a mutable array containing the objects that make up the content of each cell.

The above code works fine in <code>viewDidAppear</code> however this has the unfortunate side effect of displaying the top of the table when the view first appears and then jumping to the bottom. I would prefer it if the <code>table view</code> could be scrolled to the bottom before it appears.

I tried the scroll in <code>viewWillAppear</code> and <code>viewDidLoad</code> but in both cases the data has not been loaded into the table yet and both throw an exception.

Any guidance would be much appreciated, even if it's just a case of telling me what I have is all that is possible.

How to scroll to the bottom of a UITableView on the iPhone before the view appears

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个用可变高度的单元格填充的UITableView。当视图被推入视图时，我希望表格滚动到底部。我目前有以下功能NSIndexPath *indexPath = [NSIndexPath indexPathForRow:[log count]-1 inSection:0];[self.table scrollToRo...

问如何在视图出现之前滚动到iPhone上UITableView的底部
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问如何在视图出现之前滚动到iPhone上UITableView的底部EN