Top 7 Android String Format 17718 Votes This Answer

Java String format() method – javatpoint

• Article author: www.javatpoint.com
• Reviews from users: 22364 Ratings
• Top rated: 4.6
• Lowest rated: 1
• Summary of article content: Articles about Java String format() method – javatpoint Updating …
• Most searched keywords: Whether you are looking for Java String format() method – javatpoint Updating java, string, format, method, signature, exampleJava String format() method with method signature and examples of concat, compare, touppercase, tolowercase, trim, length, equals, split, string format in java etc.
• Table of Contents:

Java String

Java String Methods

Java String format() method example

Java String format() Method Example 2

Java String format() Method Example 3

Help Others Please Share

Learn Latest Tutorials

Preparation

Trending Technologies

BTech MCA

Javatpoint Services

Training For College Campus

Read More

String resources  |  Android Developers

• Article author: developer.android.com
• Reviews from users: 47911 Ratings
• Top rated: 3.0
• Lowest rated: 1
• Summary of article content: Articles about String resources  |  Android Developers Updating …
• Most searched keywords: Whether you are looking for String resources  |  Android Developers Updating
• Table of Contents:

String

String array

Quantity strings (plurals)

Format and style

Styling with spannables

Styling with annotations

Read More

Convert string or numeric time values into date format—ArcGIS Pro | Documentation

• Article author: pro.arcgis.com
• Reviews from users: 17373 Ratings
• Top rated: 3.6
• Lowest rated: 1
• Summary of article content: Articles about Convert string or numeric time values into date format—ArcGIS Pro | Documentation Updating …
• Most searched keywords: Whether you are looking for Convert string or numeric time values into date format—ArcGIS Pro | Documentation Updating Time values stored in string or numeric format can be converted into a date format.
• Table of Contents:

Date and time format strings

Customize date and time formats

Separators

Locales

AM and PM designators

Read More

Is it better practice to use String.format over string Concatenation in Java? – Stack Overflow

• Article author: stackoverflow.com
• Reviews from users: 17881 Ratings
• Top rated: 4.4
• Lowest rated: 1
• Summary of article content: Articles about Is it better practice to use String.format over string Concatenation in Java? – Stack Overflow Updating …
• Most searched keywords: Whether you are looking for Is it better practice to use String.format over string Concatenation in Java? – Stack Overflow Updating
• Table of Contents:

15 Answers
15

Your Answer

Not the answer you’re looking for Browse other questions tagged java string concatenation stringformat or ask your own question

Read More

Java String format() method – javatpoint

• Article author: www.javatpoint.com
• Reviews from users: 13078 Ratings
• Top rated: 3.8
• Lowest rated: 1
• Summary of article content: Articles about Java String format() method – javatpoint Java String format(). The java string format() method returns the formatted string by given locale, format and arguments. If you don’t specify the locale in … …
• Most searched keywords: Whether you are looking for Java String format() method – javatpoint Java String format(). The java string format() method returns the formatted string by given locale, format and arguments. If you don’t specify the locale in … java, string, format, method, signature, exampleJava String format() method with method signature and examples of concat, compare, touppercase, tolowercase, trim, length, equals, split, string format in java etc.
• Table of Contents:

Java String

Java String Methods

Java String format() method example

Java String format() Method Example 2

Java String format() Method Example 3

Help Others Please Share

Learn Latest Tutorials

Preparation

Trending Technologies

BTech MCA

Javatpoint Services

Training For College Campus

Read More

Android SDK Quick Tip: Formatting Resource Strings

• Article author: code.tutsplus.com
• Reviews from users: 16428 Ratings
• Top rated: 3.4
• Lowest rated: 1
• Summary of article content: Articles about Android SDK Quick Tip: Formatting Resource Strings Format strings can have one parameter or many. Each parameter is numbered and typed. The parameter number is specified using % followed by the … …
• Most searched keywords: Whether you are looking for Android SDK Quick Tip: Formatting Resource Strings Format strings can have one parameter or many. Each parameter is numbered and typed. The parameter number is specified using % followed by the …
  This quick tip shows you how to create and use string resources as format strings. You will achieve this by creating and configuring the appropriate string resources in XML and using them…
• Table of Contents:

Step 0 Getting Started

Step 1 Creating the String Resources

Step 2 Why Use Format Strings

Step 3 Creating Format Strings

Step 4 Supplying Format Strings with Numeric Parameters

Step 5 Supplying Format Strings with Multiple Parameters

Bonus Format String Parameter Order is Flexible and Locale-Friendly

Conclusion

Read More

Android SDK Quick Tip: Formatting Resource Strings

• Article author: medium.com
• Reviews from users: 26194 Ratings
• Top rated: 3.7
• Lowest rated: 1
• Summary of article content: Articles about Android SDK Quick Tip: Formatting Resource Strings By default string resources are so-called formatted. · Lint performs checks on formatted strings and will complain if it encounters string like this: %d of %d … …
• Most searched keywords: Whether you are looking for Android SDK Quick Tip: Formatting Resource Strings By default string resources are so-called formatted. · Lint performs checks on formatted strings and will complain if it encounters string like this: %d of %d …
  This quick tip shows you how to create and use string resources as format strings. You will achieve this by creating and configuring the appropriate string resources in XML and using them…
• Table of Contents:

Step 0 Getting Started

Step 1 Creating the String Resources

Step 2 Why Use Format Strings

Step 3 Creating Format Strings

Step 4 Supplying Format Strings with Numeric Parameters

Step 5 Supplying Format Strings with Multiple Parameters

Bonus Format String Parameter Order is Flexible and Locale-Friendly

Conclusion

Read More

android string format

• Article author: googlesamples.github.io
• Reviews from users: 31195 Ratings
• Top rated: 3.7
• Lowest rated: 1
• Summary of article content: Articles about android string format Summary. Inval format string. Severity. Error. Category. Correctness: Messages. Platform. Andro. Vendor. Andro Open Source Project. Feedback. …
• Most searched keywords: Whether you are looking for android string format Summary. Inval format string. Severity. Error. Category. Correctness: Messages. Platform. Andro. Vendor. Andro Open Source Project. Feedback.
• Table of Contents:

Read More

DateFormat.Format Method (Android.Text.Format) | Microsoft Docs

• Article author: docs.microsoft.com
• Reviews from users: 45519 Ratings
• Top rated: 3.3
• Lowest rated: 1
• Summary of article content: Articles about DateFormat.Format Method (Android.Text.Format) | Microsoft Docs Given a format string and a java.util.Calendar object, returns a CharSequence containing the requested date. …
• Most searched keywords: Whether you are looking for DateFormat.Format Method (Android.Text.Format) | Microsoft Docs Given a format string and a java.util.Calendar object, returns a CharSequence containing the requested date. Given a format string and a java.util.Calendar object, returns a CharSequence containing the requested date.
• Table of Contents:

Definition

Overloads

Format(String Calendar)

Format(String Date)

Format(String Int64)

Read More

Android Tutorial – Android String Resources Format

• Article author: www.java2s.com
• Reviews from users: 38897 Ratings
• Top rated: 4.6
• Lowest rated: 1
• Summary of article content: Articles about Android Tutorial – Android String Resources Format The Andro string resource definitions allow standard Java string-formatting sequences. The following code defines Java format string which we can use in … …
• Most searched keywords: Whether you are looking for Android Tutorial – Android String Resources Format The Andro string resource definitions allow standard Java string-formatting sequences. The following code defines Java format string which we can use in … Android Tutorial – Android String Resources FormatAndroid Tutorial – Android String Resources Format
• Table of Contents:

Plurals Resource

Java format string

HTML strings

HTML encode and decode

Quoted strings

Use multiple string resource files

Read More

See more articles in the same category here: https://chewathai27.com/to/blog.

Java String format() method

next » « prev Java String format() The java string format() method returns the formatted string by given locale, format and arguments. If you don’t specify the locale in String.format() method, it uses default locale by calling Locale.getDefault() method. The format() method of java language is like sprintf() function in c language and printf() method of java language. Internal implementation public static String format(String format, Object… args) { return new Formatter().format(format, args).toString(); } Signature There are two type of string format() method: public static String format(String format, Object… args) and, public static String format(Locale locale, String format, Object… args) Parameters locale : specifies the locale to be applied on the format() method. format : format of the string. args : arguments for the format string. It may be zero or more. Returns formatted string Throws NullPointerException : if format is null. IllegalFormatException : if format is illegal or incompatible. Java String format() method example public class FormatExample{ public static void main(String args[]){ String name=”sonoo”; String sf1=String.format(“name is %s”,name); String sf2=String.format(“value is %f”,32.33434); String sf3=String.format(“value is %32.12f”,32.33434);//returns 12 char fractional part filling with 0 System.out.println(sf1); System.out.println(sf2); System.out.println(sf3); }} Test it Now name is sonoo value is 32.334340 value is 32.334340000000 Java String Format Specifiers Here, we are providing a table of format specifiers supported by the Java String. Format Specifier Data Type Output %a floating point (except BigDecimal) Returns Hex output of floating point number. %b Any type “true” if non-null, “false” if null %c character Unicode character %d integer (incl. byte, short, int, long, bigint) Decimal Integer %e floating point decimal number in scientific notation %f floating point decimal number %g floating point decimal number, possibly in scientific notation depending on the precision and value. %h any type Hex String of value from hashCode() method. %n none Platform-specific line separator. %o integer (incl. byte, short, int, long, bigint) Octal number %s any type String value %t Date/Time (incl. long, Calendar, Date and TemporalAccessor) %t is the prefix for Date/Time conversions. More formatting flags are needed after this. See Date/Time conversion below. %x integer (incl. byte, short, int, long, bigint) Hex string. Java String format() Method Example 2 This method supports various data types and formats them into a string type. Let us see an example. public class FormatExample2 { public static void main(String[] args) { String str1 = String.format(“%d”, 101); // Integer value String str2 = String.format(“%s”, “Amar Singh”); // String value String str3 = String.format(“%f”, 101.00); // Float value String str4 = String.format(“%x”, 101); // Hexadecimal value String str5 = String.format(“%c”, ‘c’); // Char value System.out.println(str1); System.out.println(str2); System.out.println(str3); System.out.println(str4); System.out.println(str5); } } Test it Now 101 Amar Singh 101.000000 65 c Java String format() Method Example 3 Apart from formatting, we can set width, padding etc. of any value. Let us see an example where we are setting width and padding for an integer value. public class FormatExample3 { public static void main(String[] args) { String str1 = String.format(“%d”, 101); String str2 = String.format(“|%10d|”, 101); // Specifying length of integer String str3 = String.format(“|%-10d|”, 101); // Left-justifying within the specified width String str4 = String.format(“|% d|”, 101); String str5 = String.format(“|%010d|”, 101); // Filling with zeroes System.out.println(str1); System.out.println(str2); System.out.println(str3); System.out.println(str4); System.out.println(str5); } } Test it Now 101 | 101| |101 | | 101| |0000000101| Next Topic Java String getBytes()

« prev next »

Android Developers

A string resource provides text strings for your application with optional text styling and formatting. There are three types of resources that can provide your application with strings:

String XML resource that provides a single string. String Array XML resource that provides an array of strings. Quantity Strings (Plurals) XML resource that carries different strings for pluralization.

All strings are capable of applying some styling markup and formatting arguments. For information about styling and formatting strings, see the section about Formatting and Styling.

String

A single string that can be referenced from the application or from other resource files (such as an XML layout).

Note: A string is a simple resource that is referenced using the value provided in the name attribute (not the name of the XML file). So, you can combine string resources with other simple resources in the one XML file, under one element.

file location: res/values/filename.xml

The filename is arbitrary. The element’s name is used as the resource ID. compiled resource datatype: Resource pointer to a String . resource reference: In Java: R.string.string_name

In XML: @string/string_name syntax: text_string elements: Required. This must be the root node. No attributes. A string, which can include styling tags. Beware that you must escape apostrophes and quotation marks. For more information about how to properly style and format your strings see Formatting and Styling, below. attributes: name String. A name for the string. This name is used as the resource ID. example: XML file saved at res/values/strings.xml : Hello! This layout XML applies a string to a View: This application code retrieves a string: Kotlin val string: String = getString (R.string.hello) Java String string = getString (R.string.hello); You can use either getString(int) or getText(int) to retrieve a string. getText(int) retains any rich text styling applied to the string.

String array

An array of strings that can be referenced from the application.

Note: A string array is a simple resource that is referenced using the value provided in the name attribute (not the name of the XML file). As such, you can combine string array resources with other simple resources in the one XML file, under one element.

file location: res/values/filename.xml

The filename is arbitrary. The element’s name is used as the resource ID. compiled resource datatype: Resource pointer to an array of String s. resource reference: In Java: R.array.string_array_name

In XML: @[package:]array/string_array_name syntax: text_string elements: Required. This must be the root node. No attributes. Defines an array of strings. Contains one or more elements. attributes: name String. A name for the array. This name is used as the resource ID to reference the array. A string, which can include styling tags. The value can be a reference to another string resource. Must be a child of a element. Beware that you must escape apostrophes and quotation marks. See Formatting and Styling, below, for information about to properly style and format your strings. No attributes. example: XML file saved at res/values/strings.xml : Mercury Venus Earth Mars This application code retrieves a string array: Kotlin val array: Array = resources . getStringArray (R.array.planets_array) Java Resources res = getResources() ; String[] planets = res. getStringArray (R.array.planets_array);

Quantity strings (plurals)

Different languages have different rules for grammatical agreement with quantity. In English, for example, the quantity 1 is a special case. We write “1 book”, but for any other quantity we’d write “n books”. This distinction between singular and plural is very common, but other languages make finer distinctions. The full set supported by Android is zero , one , two , few , many , and other .

The rules for deciding which case to use for a given language and quantity can be very complex, so Android provides you with methods such as getQuantityString() to select the appropriate resource for you.

Although historically called “quantity strings” (and still called that in API), quantity strings should only be used for plurals. It would be a mistake to use quantity strings to implement something like Gmail’s “Inbox” versus “Inbox (12)” when there are unread messages, for example. It might seem convenient to use quantity strings instead of an if statement, but it’s important to note that some languages (such as Chinese) don’t make these grammatical distinctions at all, so you’ll always get the other string.

The selection of which string to use is made solely based on grammatical necessity. In English, a string for zero is ignored even if the quantity is 0, because 0 isn’t grammatically different from 2, or any other number except 1 (“zero books”, “one book”, “two books”, and so on). Conversely, in Korean only the other string is ever used.

Don’t be misled either by the fact that, say, two sounds like it could only apply to the quantity 2: a language may require that 2, 12, 102 (and so on) are all treated like one another but differently to other quantities. Rely on your translator to know what distinctions their language actually insists upon.

If your message doesn’t contain the quantity number, it is probably not a good candidate for a plural. For example, in Lithuanian the singular form is used for both 1 and 101, so “1 book” is translated as “1 knyga”, and “101 books” is translated as “101 knyga”. Meanwhile “a book” is “knyga” and “many books” is “daug knygų”. If an English plural message contains “a book” (singular) and “many books” (plural) without the actual number, it can be translated as “knyga” (a book)/”daug knygų” (many books), but with Lithuanian rules, it will show “knyga” (a single book), when the number happens to be 101.

It’s often possible to avoid quantity strings by using quantity-neutral formulations such as “Books: 1”. This makes your life and your translators’ lives easier, if it’s an acceptable style for your application.

On API 24+ you can use the much more powerful ICU MessageFormat class instead.

Note: A plurals collection is a simple resource that is referenced using the value provided in the name attribute (not the name of the XML file). As such, you can combine plurals resources with other simple resources in the one XML file, under one element.

file location: res/values/filename.xml

The filename is arbitrary. The element’s name is used as the resource ID. resource reference: In Java: R.plurals.plural_name syntax: text_string elements: Required. This must be the root node. No attributes. A collection of strings, of which, one string is provided depending on the amount of something. Contains one or more elements. attributes: name String. A name for the pair of strings. This name is used as the resource ID. A plural or singular string. The value can be a reference to another string resource. Must be a child of a element. Beware that you must escape apostrophes and quotation marks. See Formatting and Styling, below, for information about to properly style and format your strings. attributes: quantity Keyword. A value indicating when this string should be used. Valid values, with non-exhaustive examples in parentheses: Value Description zero When the language requires special treatment of the number 0 (as in Arabic). one When the language requires special treatment of numbers like one (as with the number 1 in English and most other languages; in Russian, any number ending in 1 but not ending in 11 is in this class). two When the language requires special treatment of numbers like two (as with 2 in Welsh, or 102 in Slovenian). few When the language requires special treatment of “small” numbers (as with 2, 3, and 4 in Czech; or numbers ending 2, 3, or 4 but not 12, 13, or 14 in Polish). many When the language requires special treatment of “large” numbers (as with numbers ending 11-99 in Maltese). other When the language does not require special treatment of the given quantity (as with all numbers in Chinese, or 42 in English). example: XML file saved at res/values/strings.xml : %d song found. %d songs found. XML file saved at res/values-pl/strings.xml : Znaleziono %d piosenkę. Znaleziono %d piosenki. Znaleziono %d piosenek. Usage: Kotlin val count = getNumberOfSongsAvailable() val songsFound = resources. getQuantityString (R.plurals.numberOfSongsAvailable, count, count) Java int count = getNumberOfSongsAvailable(); Resources res = getResources() ; String songsFound = res. getQuantityString (R.plurals.numberOfSongsAvailable, count, count); When using the getQuantityString() method, you need to pass the count twice if your string includes string formatting with a number. For example, for the string %d songs found , the first count parameter selects the appropriate plural string and the second count parameter is inserted into the %d placeholder. If your plural strings do not include string formatting, you don’t need to pass the third parameter to getQuantityString .

Format and style

Here are a few important things you should know about how to properly format and style your string resources.

Handle special characters

When a string contains characters that have special usage in XML, you must escape the characters according to the standard XML/HTML escaping rules. If you need to escape a character that has special meaning in Android you should use a preceding backslash.

By default Android will collapse sequences of whitespace characters into a single space. You can avoid this by enclosing the relevant part of your string in double quotes. In this case all whitespace characters (including new lines) will get preserved within the quoted region. Double quotes will allow you to use regular single unescaped quotes as well.

Character Escaped form(s) @ \@ ? \? New line

Tab \t U+XXXX Unicode character \uXXXX Single quote ( ‘ ) Any of the following: \’

Enclose the entire string in double quotes ( “This’ll work” , for example) Double quote ( ” ) \” Note that surrounding the string with single quotes does not work.

Whitespace collapsing and Android escaping happens after your resource file gets parsed as XML. This means that (space, punctuation space, Unicode Em space) all collapse to a single space ( ” ” ), because they are all Unicode spaces after the file is parsed as an XML. To preserve those spaces as they are, you can either quote them ( ” “ ) or use Android escaping ( \u0032 \u8200 \u8195 ).

Note: From XML parser’s perspective, there is no difference between “Test this” and “Test this” whatsoever. Both forms will not show any quotes but trigger Android whitespace-preserving quoting (that will have no practical effect in this case).

Formatting strings

If you need to format your strings, then you can do so by putting your format arguments in the string resource, as demonstrated by the following example resource.

Hello, %1$s! You have %2$d new messages.

In this example, the format string has two arguments: %1$s is a string and %2$d is a decimal number. Then, format the string by calling getString(int, Object…) . For example:

Kotlin var text = getString(R.string.welcome_messages, username, mailCount) Java String text = getString(R.string.welcome_messages, username, mailCount);

Styling with HTML markup

You can add styling to your strings with HTML markup. For example:

Welcome to Android!

The following HTML elements are supported:

Bold: ,

Italic: , ,

25% larger text:

20% smaller text:

Setting font properties: . Examples of possible font families include monospace , serif , and sans_serif .

, , and . Setting a monospace font family:

Strikethrough: , ,

Underline:

Superscript:

Subscript:

Bullet points:

,

• Line breaks:

  Division:

  CSS style:

  Paragraphs:

  If you aren't applying formatting, you can set TextView text directly by calling setText(java.lang.CharSequence) . In some cases, however, you may want to create a styled text resource that is also used as a format string. Normally, this doesn't work because the format(String, Object...) and getString(int, Object...) methods strip all the style information from the string. The work-around to this is to write the HTML tags with escaped entities, which are then recovered with fromHtml(String) , after the formatting takes place. For example:

  Store your styled text resource as an HTML-escaped string: Hello, %1$s! You have %2$d new messages. In this formatted string, a element is added. Notice that the opening bracket is HTML-escaped, using the < notation. Then format the string as usual, but also call fromHtml(String) to convert the HTML text into styled text: Kotlin val text: String = getString(R.string.welcome_messages, username, mailCount) val styledText: Spanned = Html.fromHtml(text, FROM_HTML_MODE_LEGACY) Java String text = getString(R.string.welcome_messages, username, mailCount); Spanned styledText = Html.fromHtml(text, FROM_HTML_MODE_LEGACY); Because the fromHtml(String) method formats all HTML entities, be sure to escape any possible HTML characters in the strings you use with the formatted text, using htmlEncode(String) . For instance, if you are formatting a string that contains characters such as "<" or "&", then they must be escaped before formatting, so that when the formatted string is passed through fromHtml(String) , the characters come out the way they were originally written. For example: Kotlin val escapedUsername: String = TextUtils. htmlEncode (username) val text: String = getString(R.string.welcome_messages, escapedUsername, mailCount) val styledText: Spanned = Html.fromHtml(text, FROM_HTML_MODE_LEGACY) Java String escapedUsername = TextUtils. htmlEncode (username); String text = getString(R.string.welcome_messages, escapedUsername, mailCount); Spanned styledText = Html.fromHtml(text); Styling with spannables A Spannable is a text object that you can style with typeface properties such as color and font weight. You use SpannableStringBuilder to build your text and then apply styles defined in the android.text.style package to the text. You can use the following helper methods to set up much of the work of creating spannable text: Kotlin /** * Returns a CharSequence that concatenates the specified array of CharSequence * objects and then applies a list of zero or more tags to the entire range. * * @param content an array of character sequences to apply a style to * @param tags the styled span objects to apply to the content * such as android.text.style.StyleSpan */ private fun apply(content: Array, vararg tags: Any): CharSequence { return SpannableStringBuilder().apply { openTags(tags) content.forEach { charSequence -> append(charSequence) } closeTags(tags) } } /** * Iterates over an array of tags and applies them to the beginning of the specified * Spannable object so that future text appended to the text will have the styling * applied to it. Do not call this method directly. */ private fun Spannable.openTags(tags: Array) { tags.forEach { tag -> setSpan(tag, 0, 0, Spannable.SPAN_MARK_MARK) } } /** * "Closes" the specified tags on a Spannable by updating the spans to be * endpoint-exclusive so that future text appended to the end will not take * on the same styling. Do not call this method directly. */ private fun Spannable.closeTags(tags: Array) { tags.forEach { tag -> if (length > 0) { setSpan(tag, 0, length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE) } else { removeSpan(tag) } } } Java /** * Returns a CharSequence that concatenates the specified array of CharSequence * objects and then applies a list of zero or more tags to the entire range. * * @param content an array of character sequences to apply a style to * @param tags the styled span objects to apply to the content * such as android.text.style.StyleSpan * */ private static CharSequence applyStyles(CharSequence[] content, Object[] tags) { SpannableStringBuilder text = new SpannableStringBuilder(); openTags(text, tags); for (CharSequence item : content) { text.append(item); } closeTags(text, tags); return text; } /** * Iterates over an array of tags and applies them to the beginning of the specified * Spannable object so that future text appended to the text will have the styling * applied to it. Do not call this method directly. */ private static void openTags(Spannable text, Object[] tags) { for (Object tag : tags) { text.setSpan(tag, 0, 0, Spannable.SPAN_MARK_MARK); } } /** * "Closes" the specified tags on a Spannable by updating the spans to be * endpoint-exclusive so that future text appended to the end will not take * on the same styling. Do not call this method directly. */ private static void closeTags(Spannable text, Object[] tags) { int len = text.length(); for (Object tag : tags) { if (len > 0) { text.setSpan(tag, 0, len, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); } else { text.removeSpan(tag); } } }

  The following bold , italic , and color methods wrap the helper methods above and demonstrate specific examples of applying styles defined in the android.text.style package. You can create similar methods to do other types of text styling.

  Kotlin /** * Returns a CharSequence that applies boldface to the concatenation * of the specified CharSequence objects. */ fun bold(vararg content: CharSequence): CharSequence = apply(content, StyleSpan(Typeface.BOLD)) /** * Returns a CharSequence that applies italics to the concatenation * of the specified CharSequence objects. */ fun italic(vararg content: CharSequence): CharSequence = apply(content, StyleSpan(Typeface.ITALIC)) /** * Returns a CharSequence that applies a foreground color to the * concatenation of the specified CharSequence objects. */ fun color(color: Int, vararg content: CharSequence): CharSequence = apply(content, ForegroundColorSpan(color)) Java /** * Returns a CharSequence that applies boldface to the concatenation * of the specified CharSequence objects. */ public static CharSequence bold(CharSequence... content) { return apply(content, new StyleSpan(Typeface.BOLD)); } /** * Returns a CharSequence that applies italics to the concatenation * of the specified CharSequence objects. */ public static CharSequence italic(CharSequence... content) { return apply(content, new StyleSpan(Typeface.ITALIC)); } /** * Returns a CharSequence that applies a foreground color to the * concatenation of the specified CharSequence objects. */ public static CharSequence color(int color, CharSequence... content) { return apply(content, new ForegroundColorSpan(color)); }

  Here's an example of how to chain these methods together to apply various styles to individual words within a phrase:

  Kotlin // Create an italic "hello, " a red "world", // and bold the entire sequence. val text: CharSequence = bold(italic(getString(R.string.hello)), color(Color.RED, getString(R.string.world))) Java // Create an italic "hello, " a red "world", // and bold the entire sequence. var text = bold(italic(getString(R.string.hello)), color(Color.RED, getString(R.string.world)))

  Java

   // Create an italic "hello, " a red "world", // and bold the entire sequence. CharSequence text = bold(italic(getString(R.string.hello)), color(Color.RED, getString(R.string.world)));
  
  The core-ktx Kotlin module also contains extension functions that make working with spans even easier. You can check out the android.text package documentation on GitHub to learn more.
  For more information on working with spans, see the following links:
  Styling with annotations
  You can apply complex or custom styling by using the Annotation class along with the  tag in your strings.xml resource files. The annotation tag allows you to mark parts of the string for custom styling by defining custom key-value pairs in the XML that the framework then converts into Annotation spans. You can then retrieve these annotations and use the key and value to apply the styling.
  When creating annotations, make sure you add the  tag to all translations of the string in every strings.xml file.
  Applying a custom typeface to the word “text” in all languages
  Example - adding a custom typeface
  Add the  tag, and define the key-value pair. In this case, the key is font, and the value is the type of font we want to use: title_emphasis // values/strings.xml Best practices for text on Android // values-es/strings.xml Texto en Android: mejores prácticas Load the string resource and find the annotations with the font key. Then create a custom span and replace the existing span. Kotlin // get the text as SpannedString so we can get the spans attached to the text val titleText = getText(R.string.title) as SpannedString // get all the annotation spans from the text val annotations = titleText.getSpans(0, titleText.length, Annotation::class.java) // create a copy of the title text as a SpannableString. // the constructor copies both the text and the spans. so we can add and remove spans val spannableString = SpannableString(titleText) // iterate through all the annotation spans for (annotation in annotations) { // look for the span with the key font if (annotation.key == "font") { val fontName = annotation.value // check the value associated to the annotation key if (fontName == "title_emphasis") { // create the typeface val typeface = getFontCompat(R.font.permanent_marker) // set the span at the same indices as the annotation spannableString.setSpan(CustomTypefaceSpan(typeface), titleText.getSpanStart(annotation), titleText.getSpanEnd(annotation), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE) } } } // now, the spannableString contains both the annotation spans and the CustomTypefaceSpan styledText.text = spannableString Java // get the text as SpannedString so we can get the spans attached to the text SpannedString titleText = (SpannedString) getText(R.string.title); // get all the annotation spans from the text Annotation[] annotations = titleText.getSpans(0, titleText.length(), Annotation.class); // create a copy of the title text as a SpannableString. // the constructor copies both the text and the spans. so we can add and remove spans SpannableString spannableString = new SpannableString(titleText); // iterate through all the annotation spans for (Annotation annotation: annotations) { // look for the span with the key font if (annotation.getKey().equals("font")) { String fontName = annotation.getValue(); // check the value associated to the annotation key if (fontName.equals("title_emphasis")) { // create the typeface Typeface typeface = ResourcesCompat.getFont(this, R.font.roboto_mono); // set the span at the same indices as the annotation spannableString.setSpan(new CustomTypefaceSpan(typeface), titleText.getSpanStart(annotation), titleText.getSpanEnd(annotation), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); } } } // now, the spannableString contains both the annotation spans and the CustomTypefaceSpan styledText.text = spannableString;
  If you’re using the same text multiple times, you should construct the SpannableString object once and reuse it as needed to avoid potential performance and memory issues.
  For more examples of annotation usage, see Styling internationalized text in Android
  Annotation spans and text parceling
  Because Annotation spans are also ParcelableSpans , the key-value pairs are parceled and unparceled. As long as the receiver of the parcel knows how to interpret the annotations, you can use Annotation spans to apply custom styling to the parceled text.
  To keep your custom styling when you pass the text to an Intent Bundle, you first need to add Annotation spans to your text. You can do this in the XML resources via the  tag, as shown in the example above, or in code by creating a new Annotation and setting it as a span, as shown below:
  Kotlin val spannableString = SpannableString("My spantastic text") val annotation = Annotation("font", "title_emphasis") spannableString.setSpan(annotation, 3, 7, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE) // start Activity with text with spans val intent = Intent(this, MainActivity::class.java) intent.putExtra(TEXT_EXTRA, spannableString) startActivity(intent) Java SpannableString spannableString = new SpannableString("My spantastic text"); Annotation annotation = new Annotation("font", "title_emphasis"); spannableString.setSpan(annotation, 3, 7, 33); // start Activity with text with spans Intent intent = new Intent(this, MainActivity.class); intent.putExtra(TEXT_EXTRA, spannableString); this.startActivity(intent);
  Retrieve the text from the Bundle as a SpannableString and then parse the annotations attached, as shown in the example above.
  Kotlin // read text with Spans val intentCharSequence = intent.getCharSequenceExtra(TEXT_EXTRA) as SpannableString Java // read text with Spans SpannableString intentCharSequence = (SpannableString)intent.getCharSequenceExtra(TEXT_EXTRA);
  For more information on text styling, see the following links: