blocks|key|198449|text|在交叉参考了几个答案和来源(经过一些调整)之后，以下是确实有效的答案(假设_myTextView是一个NSTextView插座)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|198450|-+(void)appendToMyTextView:(NSString*)text
{
++++dispatch_async(dispatch_get_main_queue(),+%5E{
++++++++NSAttributedString*+attr+=+[[NSAttributedString+alloc]+initWithString:text];

++++++++[[_myTextView+textStorage]+appendAttributedString:attr];
++++++++[_myTextView+scrollRangeToVisible:NSMakeRange([[_myTextView+string]+length],+0)];
++++});
}|code-block|syntax|javascript|198451|entityMap^0|11|B|1F|A|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

After cross-referencing several answers and sources (with some tweaks), here's the answer that does work (given <code>_myTextView</code> is an <code>NSTextView</code> outlet) :

<pre><code>- (void)appendToMyTextView:(NSString*)text
{
 dispatch_async(dispatch_get_main_queue(), ^{
 NSAttributedString* attr = [[NSAttributedString alloc] initWithString:text];

 [[_myTextView textStorage] appendAttributedString:attr];
 [_myTextView scrollRangeToVisible:NSMakeRange([[_myTextView string] length], 0)];
 });
}
</code></pre>

blocks|key|3035401|text|只需使用以下方式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3035402|for+(NSInteger+i=1;+i<=100;+i%2B%2B)+{
++++[self.textView+setString:[NSString+stringWithFormat:@"%25@\n%25@",[self.textView+string],@(i)]];
}

[self.textView+scrollRangeToVisible:NSMakeRange([[self.textView+string]+length],+0)];|code-block|syntax|javascript|3035403|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|$]]

Simply use this way :

<pre><code>for (NSInteger i=1; i&lt;=100; i++) {
 [self.textView setString:[NSString stringWithFormat:@"%@\n%@",[self.textView string],@(i)]];
}

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

blocks|key|194144|text|以下是Anoop+Vaidya答案的一个快速版本|type|unstyled|depth|inlineStyleRanges|entityRanges|data|194145|extension+NSTextView+{
++++func+append(string:+String)+{
++++++++let+oldString+=+self.string+==+nil+?+""+:+self.string!
++++++++let+newString+=+NSString(format:+"%25@%25@",+oldString,+string)
++++++++self.string+=+newString
++++}
}|code-block|syntax|javascript|194146|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|$]]

Here's a Swift version of Anoop Vaidya's answer

<pre><code>extension NSTextView {
 func append(string: String) {
 let oldString = self.string == nil ? "" : self.string!
 let newString = NSString(format: "%@%@", oldString, string)
 self.string = newString
 }
}
</code></pre>

blocks|key|194148|text|以下是Swiftier的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|194149|extension+NSTextView+{
++++func+appendString(string:String)+{
++++++++self.string!+%2B=+string
++++++++self.scrollRangeToVisible(NSRange(location:countElements(self.string!),+length:+0))
++++}
}|code-block|syntax|javascript|194150|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|$]]

Here's a Swiftier solution:

<pre><code>extension NSTextView {
 func appendString(string:String) {
 self.string! += string
 self.scrollRangeToVisible(NSRange(location:countElements(self.string!), length: 0))
 }
}
</code></pre>

blocks|key|194157|text|appendAttributedString和scrollToEndOfDocument分别从OS+X+10.0和10.6开始提供|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|194158|extension+NSTextView+{
++++func+append(string:+String)+{
++++++++self.textStorage?.appendAttributedString(NSAttributedString(string:+string))
++++++++self.scrollToEndOfDocument(nil)
++++}
}|code-block|syntax|javascript|194159|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSMutableAttributedString_Class/index.html#//apple_ref/occ/instm/NSMutableAttributedString/appendAttributedString:|1|https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSResponder_Class/index.html#//apple_ref/occ/instm/NSResponder/scrollToEndOfDocument:^0|0|M|N|L|1G|4|0|1L|4|1|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@$9|Z|A|10|1|11]|$9|12|A|13|1|14]]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|L|$M|$5|N|O|P|E|$Q|R]]|S|$5|N|O|P|E|$Q|T]]]]

The <code>appendAttributedString</code> and <code>scrollToEndOfDocument</code> are available starting in OS X <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSMutableAttributedString_Class/index.html#//apple_ref/occ/instm/NSMutableAttributedString/appendAttributedString:">10.0</a> and <a href="https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSResponder_Class/index.html#//apple_ref/occ/instm/NSResponder/scrollToEndOfDocument:">10.6</a> respectively

<pre><code>extension NSTextView {
 func append(string: String) {
 self.textStorage?.appendAttributedString(NSAttributedString(string: string))
 self.scrollToEndOfDocument(nil)
 }
}
</code></pre>

OK, what I need should have been very simple. However, I've looked everywhere and I'm not sure I've found something that works 100% (and it's something that has troubled me in the past too).

So, here we are :

<ul>
<li>I want to be able to append to an <code>NSTextView</code></li>
<li>After appending, the <code>NSTextView</code> should scroll down (so that that latest appended contents are visible)</li>
</ul>

Rather straightforward, huh?

So... any ideas? (A code example that performs exactly this simple "trick" would be more than ideal...)

Append to NSTextView and scroll

好吧，我需要的应该是非常简单的。然而，我到处都找过了，我不确定我找到了什么能100%工作的东西(这也是过去困扰我的东西)。所以，我们在这里：我希望能够向NSTextViewAfter追加追加，NSTextView应向下滚动(以便最新追加内容可见)相当直截了当，嗯？所以..。有什么想法吗？(完全执行这种简单“技巧”的代码...

问追加到NSTextView并滚动
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