blocks|key|386528|text|如果只有一个单词字符串，则使用方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386529|-capitalized|offset|length|386530|let+capitalizedString+=+myStr.capitalized+//+capitalizes+every+word|code-block|syntax|javascript|386531|否则，对于多个单词字符串，您必须提取第一个字符，并仅将该字符设为大写。|386532|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/foundation/nsstring/1416784-capitalized^0|0|0|C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

If there is only one word String, then use the method

<a href="https://developer.apple.com/documentation/foundation/nsstring/1416784-capitalized" rel="noreferrer">-capitalized</a>

<pre><code>let capitalizedString = myStr.capitalized // capitalizes every word
</code></pre>

Otherwise, for multi word strings, you have to extract first character and make only that character upper case.

blocks|key|4425688|text|(2014-07-24:当前接受的答案不正确)问题非常具体:第一个字母大写，其余的小写。使用capitalizedString会产生不同的结果：“大写字符串”而不是“大写字符串”。根据区域设置，还有另一个变体，它是capitalizedStringWithLocale，但它不适用于西班牙语，目前它使用与英语相同的规则，所以我在西班牙语中是这样做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4425689|NSString+*abc+=+@"this+is+test";

abc+=+[NSString+stringWithFormat:@"%25@%25@",[[abc+substringToIndex:1]+uppercaseString],[abc+substringFromIndex:1]+];+++++++
NSLog(@"abc+=+%25@",abc);|code-block|syntax|javascript|4425690|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|$]]

(2014-07-24: Currently accepted answer is not correct) The question is very specific: Make the first letter uppercase, leave the rest lowercase. Using capitalizedString produces a different result: “Capitalized String” instead of “Capitalized string”. There is another variant depending on the locale, which is capitalizedStringWithLocale, but it's not correct for spanish, right now it's using the same rules as in english, so this is how I'm doing it for spanish:

<pre><code>NSString *abc = @"this is test";

abc = [NSString stringWithFormat:@"%@%@",[[abc substringToIndex:1] uppercaseString],[abc substringFromIndex:1] ]; 
NSLog(@"abc = %@",abc);
</code></pre>

blocks|key|1445729|text|这是针对您的NSString%2BUtil类别...|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1445730|-+(NSString+*)+capitalizedFirstLetter+{
++++NSString+*retVal;
++++if+(self.length+<+2)+{
++++++++retVal+=+self.capitalizedString;
++++}+else+{
++++++++retVal+=+string(@"%25@%25@",[[self+substringToIndex:1]+uppercaseString],[self+substringFromIndex:1]);
++++}
++++return+retVal;
}|code-block|syntax|javascript|1445731|当然，您可以使用NSString+stringWithFormat来做到这一点。我用了这个怪异的东西：|1445732|#define+string(...)+\
[NSString+stringWithFormat:__VA_ARGS__]|1445733|entityMap^0|6|D|0|0|8|P|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|P|$]]

This is for your <code>NSString+Util</code> category...

<pre><code>- (NSString *) capitalizedFirstLetter {
 NSString *retVal;
 if (self.length &lt; 2) {
 retVal = self.capitalizedString;
 } else {
 retVal = string(@"%@%@",[[self substringToIndex:1] uppercaseString],[self substringFromIndex:1]);
 }
 return retVal;
}
</code></pre>

You can do that with <code>NSString stringWithFormat</code>, of course. I use this weirdness:

<pre><code>#define string(...) \
[NSString stringWithFormat:__VA_ARGS__]
</code></pre>

blocks|key|4425746|text|下面是它的一个快速扩展|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4425747|extension+NSString+{
++++func+capitalizeFirstLetter()+->+NSString+{
++++++++return+self.length+>+1+?
++++++++++self.substringToIndex(1).capitalizedString+%2B+self.substringFromIndex(1)+:
++++++++++self.capitalizedString
++++}
}|code-block|syntax|javascript|4425748|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 extension for it

<pre><code>extension NSString {
 func capitalizeFirstLetter() -&gt; NSString {
 return self.length &gt; 1 ?
 self.substringToIndex(1).capitalizedString + self.substringFromIndex(1) :
 self.capitalizedString
 }
}
</code></pre>

blocks|key|1445747|text|这就是我的工作原理：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1445748|NSString+*serverString+=+jsonObject[@"info"];

NSMutableString+*textToDisplay+=+[NSMutableString+stringWithFormat:@"%25@",+serverString];

[textToDisplay+replaceCharactersInRange:NSMakeRange(0,+1)+withString:[textToDisplay+substringToIndex:1].capitalizedString];

cell.infoLabel.text+=+textToDisplay;|code-block|syntax|javascript|1445749|希望能有所帮助。|1445750|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|$]]

This is how it worked for me:

<pre><code>NSString *serverString = jsonObject[@"info"];

NSMutableString *textToDisplay = [NSMutableString stringWithFormat:@"%@", serverString];

[textToDisplay replaceCharactersInRange:NSMakeRange(0, 1) withString:[textToDisplay substringToIndex:1].capitalizedString];

cell.infoLabel.text = textToDisplay;
</code></pre>

Hope it helps.

blocks|key|1442518|text|Swift:|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|1442519|let+userName+=+"hard+CODE"
yourLabel.text+=+userName.localizedUppercaseString|code-block|syntax|javascript|1442520|我推荐使用这个大写的本地化版本，因为名称是区域敏感的。|1442521|entityMap^0|0|6|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

Swift:

<pre><code>let userName = "hard CODE"
yourLabel.text = userName.localizedUppercaseString
</code></pre>

I recommend using this localised version of uppercase, since names are locale sensitive.

blocks|key|425004|text|如果有人仍然对2016感兴趣，这里有一个Swift+3扩展：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|425005|extension+String+{
++++func+capitalizedFirst()+->+String+{
++++++++let+first+=+self[self.startIndex+..<+self.index(startIndex,+offsetBy:+1)]
++++++++let+rest+=+self[self.index(startIndex,+offsetBy:+1)+..<+self.endIndex]
++++++++return+first.uppercased()+%2B+rest.lowercased()
++++}

++++func+capitalizedFirst(with:+Locale?)+->+String+{
++++++++let+first+=+self[self.startIndex+..<+self.index(startIndex,+offsetBy:+1)]
++++++++let+rest+=+self[self.index(startIndex,+offsetBy:+1)+..<+self.endIndex]
++++++++return+first.uppercased(with:+with)+%2B+rest.lowercased(with:+with)
++++}
}|code-block|syntax|javascript|425006|然后，您可以完全按照通常的大写()或大写()的方式使用它：|425007|myString.capitalizedFirst()或myString.capitalizedFirst(with:+Locale.current)|CODE|425008|entityMap^0|K|7|0|0|0|0|R|S|1B|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|U|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|V|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|W|8|@$9|X|A|Y|B|O]|$9|Z|A|10|B|O]]|D|@]|E|$]]|$1|P|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|Q|$]]

In case someone is still interested in 2016, here is a Swift 3 extension:

<pre><code>extension String {
 func capitalizedFirst() -&gt; String {
 let first = self[self.startIndex ..&lt; self.index(startIndex, offsetBy: 1)]
 let rest = self[self.index(startIndex, offsetBy: 1) ..&lt; self.endIndex]
 return first.uppercased() + rest.lowercased()
 }

 func capitalizedFirst(with: Locale?) -&gt; String {
 let first = self[self.startIndex ..&lt; self.index(startIndex, offsetBy: 1)]
 let rest = self[self.index(startIndex, offsetBy: 1) ..&lt; self.endIndex]
 return first.uppercased(with: with) + rest.lowercased(with: with)
 }
}
</code></pre>

Then you use it exactly as you would for the usual uppercased() or capitalized():

<code>myString.capitalizedFirst()</code> or <code>myString.capitalizedFirst(with: Locale.current)</code>

blocks|key|4425818|text|简单地说|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4425819|-+(NSString+*)capitalizeFirstLetterOnlyOfString:(NSString+*)string{
+++++NSMutableString+*result+=+[string+lowercaseString].mutableCopy;
+++++[result+replaceCharactersInRange:NSMakeRange(0,+1)+withString:[[result+substringToIndex:1]+capitalizedString]];

+++++return+result;
}|code-block|syntax|javascript|4425820|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

<pre><code>- (NSString *)capitalizeFirstLetterOnlyOfString:(NSString *)string{
 NSMutableString *result = [string lowercaseString].mutableCopy;
 [result replaceCharactersInRange:NSMakeRange(0, 1) withString:[[result substringToIndex:1] capitalizedString]];

 return result;
}
</code></pre>

blocks|key|425041|text|作为可接受答案的扩展|type|unstyled|depth|inlineStyleRanges|entityRanges|data|425042|capitalizedString是用来写大写字母的。|offset|length|425043|NSString+*capitalizedString+=+[myStr+capitalizedString];+//+capitalizes+every+word|code-block|syntax|javascript|425044|但是，如果字符串中有许多单词，并且只想将第一个字符作为大写字母，请使用下面的解决方案|425045|NSString+*firstCapitalChar+=+[[string+substringToIndex:1]+capitalizedString];
NSString+*capString+=+[string+stringByReplacingCharactersInRange:NSMakeRange(0,1)+withString:+capString];


//+extract+first+character+and+make+only+that+character+upper+case.|425046|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/foundation/nsstring#//apple_ref/occ/instm/NSString/capitalizedString^0|0|0|H|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@$D|Y|E|Z|1|10]]|A|$]]|$1|F|3|G|5|H|7|11|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

As an extension to the accepted answer

<a href="https://developer.apple.com/documentation/foundation/nsstring#//apple_ref/occ/instm/NSString/capitalizedString" rel="nofollow noreferrer">capitalizedString</a> is used for making uppercase letters .

<pre><code>NSString *capitalizedString = [myStr capitalizedString]; // capitalizes every word
</code></pre>

But if you have many words in a string and wants to get only first character as upper case use the below solution

<pre><code>NSString *firstCapitalChar = [[string substringToIndex:1] capitalizedString];
NSString *capString = [string stringByReplacingCharactersInRange:NSMakeRange(0,1) withString: capString];


// extract first character and make only that character upper case.
</code></pre>

I'm developing an iPhone app. In a label, I want to show an user's first letter of the name uppercase. How do I do that?

How to make first letter uppercase in a UILabel?

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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我正在开发一个iPhone应用程序。在标签中，我希望显示用户姓名的第一个大写字母。我该怎么做？

问如何使UILabel中的第一个字母大写？
EN

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问如何使UILabel中的第一个字母大写？EN