blocks|key|479411|text|我从这里得到了一些建议：Android,need+to+make+in+my+ListView+the+first+letter+of+each+word+uppercase，但最后，我提出了自己的解决方案(注意，这种方法假设所有单词都由一个空格字符分隔，这符合我的需要)：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|479412|String[]+words+=+input.getText().toString().split("+");
StringBuilder+sb+=+new+StringBuilder();
if+(words[0].length()+>+0)+{
++++sb.append(Character.toUpperCase(words[0].charAt(0))+%2B+words[0].subSequence(1,+words[0].length()).toString().toLowerCase());
++++for+(int+i+=+1;+i+<+words.length;+i%2B%2B)+{
++++++++sb.append("+");
++++++++sb.append(Character.toUpperCase(words[i].charAt(0))+%2B+words[i].subSequence(1,+words[i].length()).toString().toLowerCase());
++++}
}
String+titleCaseValue+=+sb.toString();|code-block|syntax|javascript|479413|...where输入是一个EditText视图。在视图上设置输入类型也很有帮助，这样它就可以默认为标题大小写：|479414|input.setInputType(InputType.TYPE_TEXT_FLAG_CAP_WORDS);|479415|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/5879353/android-need-to-make-in-my-listview-the-first-letter-of-each-word-uppercase^0|C|23|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|C|$G|H]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

I got some pointers from here: <a href="https://stackoverflow.com/questions/5879353/android-need-to-make-in-my-listview-the-first-letter-of-each-word-uppercase">Android,need to make in my ListView the first letter of each word uppercase</a>, but in the end, rolled my own solution (note, this approach assumes that all words are separated by a single space character, which was fine for my needs):

<pre><code>String[] words = input.getText().toString().split(" ");
StringBuilder sb = new StringBuilder();
if (words[0].length() &gt; 0) {
 sb.append(Character.toUpperCase(words[0].charAt(0)) + words[0].subSequence(1, words[0].length()).toString().toLowerCase());
 for (int i = 1; i &lt; words.length; i++) {
 sb.append(" ");
 sb.append(Character.toUpperCase(words[i].charAt(0)) + words[i].subSequence(1, words[i].length()).toString().toLowerCase());
 }
}
String titleCaseValue = sb.toString();
</code></pre>

...where input is an EditText view. It is also helpful to set the input type on the view so that it defaults to title case anyway:

<pre><code>input.setInputType(InputType.TYPE_TEXT_FLAG_CAP_WORDS);
</code></pre>

blocks|key|479475|text|你要找的是阿帕奇的WordUtils.capitalize()+method。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|479476|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/proper/commons-lang/javadocs/api-release/org/apache/commons/lang3/text/WordUtils.html#capitalize%2528java.lang.String%2529^0|9|M|9|T|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

You're looking for Apache's <a href="http://commons.apache.org/proper/commons-lang/javadocs/api-release/org/apache/commons/lang3/text/WordUtils.html#capitalize%28java.lang.String%29" rel="noreferrer"><code>WordUtils.capitalize()</code> method</a>.

blocks|key|479513|text|这对你有帮助|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479514|EditText+view+=+(EditText)+find..
String+txt+=+view.getText();
txt+=+String.valueOf(txt.charAt(0)).toUpperCase()+%2B+txt.substring(1,+txt.length());|code-block|syntax|javascript|479515|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 helps you

<pre><code>EditText view = (EditText) find..
String txt = view.getText();
txt = String.valueOf(txt.charAt(0)).toUpperCase() + txt.substring(1, txt.length());
</code></pre>

blocks|key|263041|text|在XML中，您可以这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|263042|android:inputType="textCapWords"|code-block|syntax|javascript|263043|在此处检查其他选项的引用，如句子大小写、所有大写字母等：|263044|http://developer.android.com/reference/android/widget/TextView.html#attr_android:inputType|offset|length|263045|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|2I|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@]|9|@$K|X|L|Y|1|Z]]|A|$]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|J]]]]

In the XML, you can do it like this:

<pre><code>android:inputType="textCapWords"
</code></pre>

Check the reference for other options, like Sentence case, all upper letters, etc. here:

<a href="http://developer.android.com/reference/android/widget/TextView.html#attr_android:inputType" rel="noreferrer">http://developer.android.com/reference/android/widget/TextView.html#attr_android:inputType</a>

blocks|key|263099|text|请检查下面的解决方案，它既适用于多个字符串，也适用于单个字符串，以|type|unstyled|depth|inlineStyleRanges|entityRanges|data|263100|+String+toBeCapped+=+"i+want+this+sentence+capitalized";++
+String[]+tokens+=+toBeCapped.split("\\s");+

+if(tokens.length>0)
+{
+++toBeCapped+=+"";+

++++for(int+i+=+0;+i+<+tokens.length;+i%2B%2B)
++++{+
+++++char+capLetter+=+Character.toUpperCase(tokens[i].charAt(0));+
+++++toBeCapped+%2B=+"+"+%2B+capLetter+%2B+tokens[i].substring(1,+tokens[i].length());+
++++}
+}
+else
+{
++char+capLetter+=+Character.toUpperCase(toBeCapped.charAt(0));+
++toBeCapped+%2B=+"+"+%2B+capLetter+%2B+toBeCapped+.substring(1,+toBeCapped+.length());+
+}|code-block|syntax|javascript|263101|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|$]]

Please check the solution below it will work for both multiple string and also single string to 

<pre><code> String toBeCapped = "i want this sentence capitalized"; 
 String[] tokens = toBeCapped.split("\\s"); 

 if(tokens.length&gt;0)
 {
 toBeCapped = ""; 

 for(int i = 0; i &lt; tokens.length; i++)
 { 
 char capLetter = Character.toUpperCase(tokens[i].charAt(0)); 
 toBeCapped += " " + capLetter + tokens[i].substring(1, tokens[i].length()); 
 }
 }
 else
 {
 char capLetter = Character.toUpperCase(toBeCapped.charAt(0)); 
 toBeCapped += " " + capLetter + toBeCapped .substring(1, toBeCapped .length()); 
 }
</code></pre>

blocks|key|479672|text|+++++/**
+++++*+Function+to+convert+string+to+title+case
+++++*+
+++++*+@param+string+-+Passed+string+
+++++*/
++++public+static+String+toTitleCase(String+string)+{

++++++++//+Check+if+String+is+null
++++++++if+(string+==+null)+{
++++++++++++
++++++++++++return+null;
++++++++}

++++++++boolean+whiteSpace+=+true;
++++++++
++++++++StringBuilder+builder+=+new+StringBuilder(string);+//+String+builder+to+store+string
++++++++final+int+builderLength+=+builder.length();

++++++++//+Loop+through+builder
++++++++for+(int+i+=+0;+i+<+builderLength;+%2B%2Bi)+{

++++++++++++char+c+=+builder.charAt(i);+//+Get+character+at+builders+position
++++++++++++
++++++++++++if+(whiteSpace)+{
++++++++++++++++
++++++++++++++++//+Check+if+character+is+not+white+space
++++++++++++++++if+(!Character.isWhitespace(c))+{
++++++++++++++++++++
++++++++++++++++++++//+Convert+to+title+case+and+leave+whitespace+mode.
++++++++++++++++++++builder.setCharAt(i,+Character.toTitleCase(c));
++++++++++++++++++++whiteSpace+=+false;
++++++++++++++++}
++++++++++++}+else+if+(Character.isWhitespace(c))+{
++++++++++++++++
++++++++++++++++whiteSpace+=+true;+//+Set+character+is+white+space
++++++++++++
++++++++++++}+else+{
++++++++++++
++++++++++++++++builder.setCharAt(i,+Character.toLowerCase(c));+//+Set+character+to+lowercase
++++++++++++}
++++++++}

++++++++return+builder.toString();+//+Return+builders+text
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|479673|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code> /**
 * Function to convert string to title case
 * 
 * @param string - Passed string 
 */
 public static String toTitleCase(String string) {

 // Check if String is null
 if (string == null) {
 
 return null;
 }

 boolean whiteSpace = true;
 
 StringBuilder builder = new StringBuilder(string); // String builder to store string
 final int builderLength = builder.length();

 // Loop through builder
 for (int i = 0; i &lt; builderLength; ++i) {

 char c = builder.charAt(i); // Get character at builders position
 
 if (whiteSpace) {
 
 // Check if character is not white space
 if (!Character.isWhitespace(c)) {
 
 // Convert to title case and leave whitespace mode.
 builder.setCharAt(i, Character.toTitleCase(c));
 whiteSpace = false;
 }
 } else if (Character.isWhitespace(c)) {
 
 whiteSpace = true; // Set character is white space
 
 } else {
 
 builder.setCharAt(i, Character.toLowerCase(c)); // Set character to lowercase
 }
 }

 return builder.toString(); // Return builders text
 }
</code></pre>

blocks|key|263126|text|只需这样做：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|263127|public+static+String+toCamelCase(String+s){
++++if(s.length()+==+0){
++++++++return+s;
++++}
++++String[]+parts+=+s.split("+");
++++String+camelCaseString+=+"";
++++for+(String+part+:+parts){
++++++++camelCaseString+=+camelCaseString+%2B+toProperCase(part)+%2B+"+";
++++}
++++return+camelCaseString;
}

public+static+String+toProperCase(String+s)+{
++++return+s.substring(0,+1).toUpperCase()+%2B
++++++++++++s.substring(1).toLowerCase();
}|code-block|syntax|javascript|263128|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|$]]

Just do something like this:

<pre><code>public static String toCamelCase(String s){
 if(s.length() == 0){
 return s;
 }
 String[] parts = s.split(" ");
 String camelCaseString = "";
 for (String part : parts){
 camelCaseString = camelCaseString + toProperCase(part) + " ";
 }
 return camelCaseString;
}

public static String toProperCase(String s) {
 return s.substring(0, 1).toUpperCase() +
 s.substring(1).toLowerCase();
}
</code></pre>

blocks|key|479743|text|我简化了@Russ中被接受的答案，这样就不需要区分字符串数组中的第一个单词和其他单词。(我在每个单词后面添加空格，然后在返回句子之前对句子进行修剪)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479744|public+static+String+toCamelCaseSentence(String+s)+{

++++if+(s+!=+null)+{
++++++++String[]+words+=+s.split("+");

++++++++StringBuilder+sb+=+new+StringBuilder();

++++++++for+(int+i+=+0;+i+<+words.length;+i%2B%2B)+{
++++++++++++sb.append(toCamelCaseWord(words[i]));
++++++++}

++++++++return+sb.toString().trim();
++++}+else+{
++++++++return+"";
++++}
}|code-block|syntax|javascript|479745|处理空字符串(句子中的多个空格)和字符串中的单字母单词。|479746|public+static+String+toCamelCaseWord(String+word)+{
++++if+(word+==null){
++++++++return+"";
++++}

++++switch+(word.length())+{
++++++++case+0:
++++++++++++return+"";
++++++++case+1:
++++++++++++return+word.toUpperCase(Locale.getDefault())+%2B+"+";
++++++++default:
++++++++++++char+firstLetter+=+Character.toUpperCase(word.charAt(0));
++++++++++++return+firstLetter+%2B+word.substring(1).toLowerCase(Locale.getDefault())+%2B+"+";
++++}
}|479747|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 simplified the accepted answer from @Russ such that there is no need to differentiate the first word in the string array from the rest of the words.
(I add the space after every word, then just trim the sentence before returning the sentence)

<pre><code>public static String toCamelCaseSentence(String s) {

 if (s != null) {
 String[] words = s.split(" ");

 StringBuilder sb = new StringBuilder();

 for (int i = 0; i &lt; words.length; i++) {
 sb.append(toCamelCaseWord(words[i]));
 }

 return sb.toString().trim();
 } else {
 return "";
 }
}
</code></pre>

handles empty strings (multiple spaces in sentence) and single letter words in the String.

<pre><code>public static String toCamelCaseWord(String word) {
 if (word ==null){
 return "";
 }

 switch (word.length()) {
 case 0:
 return "";
 case 1:
 return word.toUpperCase(Locale.getDefault()) + " ";
 default:
 char firstLetter = Character.toUpperCase(word.charAt(0));
 return firstLetter + word.substring(1).toLowerCase(Locale.getDefault()) + " ";
 }
}
</code></pre>

blocks|key|479802|text|我基于Apache的WordUtils.capitalize()方法编写了一段代码。您可以将分隔符设置为正则表达式字符串。如果你想跳过像"of“这样的单词，只需将它们设置为分隔符。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|479803|public+static+String+capitalize(String+str,+final+String+delimitersRegex)+{
++++if+(str+==+null+%7C%7C+str.length()+==+0)+{
++++++++return+"";
++++}

++++final+Pattern+delimPattern;
++++if+(delimitersRegex+==+null+%7C%7C+delimitersRegex.length()+==+0){
++++++++delimPattern+=+Pattern.compile("\\W");
++++}else+{
++++++++delimPattern+=+Pattern.compile(delimitersRegex);
++++}

++++final+Matcher+delimMatcher+=+delimPattern.matcher(str);
++++boolean+delimiterFound+=+delimMatcher.find();

++++int+delimeterStart+=+-1;
++++if+(delimiterFound){
++++++++delimeterStart+=+delimMatcher.start();
++++}

++++final+int+strLen+=+str.length();
++++final+StringBuilder+buffer+=+new+StringBuilder(strLen);

++++boolean+capitalizeNext+=+true;
++++for+(int+i+=+0;+i+<+strLen;+i%2B%2B)+{
++++++++if+(delimiterFound+&&+i+==+delimeterStart)+{
++++++++++++final+int+endIndex+=+delimMatcher.end();

++++++++++++buffer.append(+str.substring(i,+endIndex)+);
++++++++++++i+=+endIndex;

++++++++++++if(+(delimiterFound+=+delimMatcher.find())+){
++++++++++++++++delimeterStart+=+delimMatcher.start();
++++++++++++}

++++++++++++capitalizeNext+=+true;
++++++++}+else+{
++++++++++++final+char+ch+=+str.charAt(i);

++++++++++++if+(capitalizeNext)+{
++++++++++++++++buffer.append(Character.toTitleCase(ch));
++++++++++++++++capitalizeNext+=+false;
++++++++++++}+else+{
++++++++++++++++buffer.append(ch);
++++++++++++}
++++++++}
++++}
++++return+buffer.toString();
}|code-block|syntax|javascript|479804|希望这能有所帮助:)|479805|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 wrote a code based on Apache's WordUtils.capitalize() method. You can set your Delimiters as a Regex String. If you want words like "of" to be skipped, just set them as a delimiter.

<pre><code>public static String capitalize(String str, final String delimitersRegex) {
 if (str == null || str.length() == 0) {
 return "";
 }

 final Pattern delimPattern;
 if (delimitersRegex == null || delimitersRegex.length() == 0){
 delimPattern = Pattern.compile("\\W");
 }else {
 delimPattern = Pattern.compile(delimitersRegex);
 }

 final Matcher delimMatcher = delimPattern.matcher(str);
 boolean delimiterFound = delimMatcher.find();

 int delimeterStart = -1;
 if (delimiterFound){
 delimeterStart = delimMatcher.start();
 }

 final int strLen = str.length();
 final StringBuilder buffer = new StringBuilder(strLen);

 boolean capitalizeNext = true;
 for (int i = 0; i &lt; strLen; i++) {
 if (delimiterFound &amp;&amp; i == delimeterStart) {
 final int endIndex = delimMatcher.end();

 buffer.append( str.substring(i, endIndex) );
 i = endIndex;

 if( (delimiterFound = delimMatcher.find()) ){
 delimeterStart = delimMatcher.start();
 }

 capitalizeNext = true;
 } else {
 final char ch = str.charAt(i);

 if (capitalizeNext) {
 buffer.append(Character.toTitleCase(ch));
 capitalizeNext = false;
 } else {
 buffer.append(ch);
 }
 }
 }
 return buffer.toString();
}
</code></pre>

Hope that Helps :)

blocks|key|263312|text|使用此函数可以将数据转换为驼峰大小写|type|unstyled|depth|inlineStyleRanges|entityRanges|data|263313|+public+static+String+camelCase(String+stringToConvert)+{
++++++++if+(TextUtils.isEmpty(stringToConvert))
++++++++++++{return+"";}
++++++++return+Character.toUpperCase(stringToConvert.charAt(0))+%2B
++++++++++++++++stringToConvert.substring(1).toLowerCase();
++++}|code-block|syntax|javascript|263314|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|$]]

Use this function to convert data in camel case

<pre><code> public static String camelCase(String stringToConvert) {
 if (TextUtils.isEmpty(stringToConvert))
 {return "";}
 return Character.toUpperCase(stringToConvert.charAt(0)) +
 stringToConvert.substring(1).toLowerCase();
 }
</code></pre>

blocks|key|263377|text|如果您正在寻找标题大小写格式，这个kotlin扩展函数可能会对您有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|263378|fun+String.toTitleCase():+String+{
if+(isNotEmpty())+{
++++val+charArray+=+this.toCharArray()
++++return+buildString+{
++++++++for+(i:+Int+in+charArray.indices)+{
++++++++++++val+c+=+charArray[i]
++++++++++++//+start+find+space+from+1+because+it+can+cause+invalid+index+of+position+if+(-1)
++++++++++++val+previous+=+if+(i+>+0)+charArray[(i+-+1)]+else+null
++++++++++++//+true+if+before+is+space+char
++++++++++++val+isBeforeSpace+=+previous?.let+{+Character.isSpaceChar(it)+}+?:+false
++++++++++++//+append+char+to+uppercase+if+current+index+is+0+or+before+is+space
++++++++++++if+(i+==+0+%7C%7C+isBeforeSpace)+append(c.toUpperCase())+else+append(c)
++++++++++++print("char:$c,+\ncharIndex:+$i,+\nisBeforeSpace:+$isBeforeSpace\n\n")
++++++++}
++++++++print("result:+$this")
++++}
}+return+this+}|code-block|syntax|javascript|263379|并像这样实现|263380|data+class+User(val+name+:String){+val+displayName:+String+get()+=+name.toTitleCase()+}|263381|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|$]]

If you're looking for Title case format,
This kotlin extension functions may help you.
<pre><code>fun String.toTitleCase(): String {
if (isNotEmpty()) {
 val charArray = this.toCharArray()
 return buildString {
 for (i: Int in charArray.indices) {
 val c = charArray[i]
 // start find space from 1 because it can cause invalid index of position if (-1)
 val previous = if (i &gt; 0) charArray[(i - 1)] else null
 // true if before is space char
 val isBeforeSpace = previous?.let { Character.isSpaceChar(it) } ?: false
 // append char to uppercase if current index is 0 or before is space
 if (i == 0 || isBeforeSpace) append(c.toUpperCase()) else append(c)
 print(&quot;char:$c, \ncharIndex: $i, \nisBeforeSpace: $isBeforeSpace\n\n&quot;)
 }
 print(&quot;result: $this&quot;)
 }
} return this }
</code></pre>
And implement like
<pre><code>data class User(val name :String){ val displayName: String get() = name.toTitleCase() }
</code></pre>

I searched high and low but could only find indirect references to this type of question. When developing an android application, if you have a string which has been entered by the user, how can you convert it to title case (ie. make the first letter of each word upper case)? I would rather not import a whole library (such as Apache's WordUtils).

How do I convert a string to title case in android?

数据转换

我到处寻找，但只能找到对这类问题的间接引用。在开发android应用程序时，如果您有一个用户输入的字符串，如何将其转换为标题大小写(即。使每个单词的第一个字母大写)？我不想导入整个库(比如Apache的WordUtils)。

问如何在android中将字符串转换为标题大小写？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在android中将字符串转换为标题大小写？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在android中将字符串转换为标题大小写？
EN