Save the date! Android Dev Summit is coming to Mountain View, CA on November 7-8, 2018.

NumberingSystem

public class NumberingSystem
extends Object

java.lang.Object
   ↳ android.icu.text.NumberingSystem


NumberingSystem is the base class for all number systems. This class provides the interface for setting different numbering system types, whether it be a simple alternate digit system such as Thai digits or Devanagari digits, or an algorithmic numbering system such as Hebrew numbering or Chinese numbering.

Summary

Public constructors

NumberingSystem()

Default constructor.

Public methods

static String[] getAvailableNames()

Returns a string array containing a list of the names of numbering systems currently known to ICU.

String getDescription()

Returns the description string of the current numbering system.

static NumberingSystem getInstance(ULocale locale)

Returns the default numbering system for the specified ULocale.

static NumberingSystem getInstance(Locale inLocale)

Returns the default numbering system for the specified locale.

static NumberingSystem getInstance()

Returns the default numbering system for the default FORMAT locale.

static NumberingSystem getInstance(int radix_in, boolean isAlgorithmic_in, String desc_in)

Factory method for creating a numbering system.

static NumberingSystem getInstanceByName(String name)

Returns a numbering system from one of the predefined numbering systems known to ICU.

String getName()

Returns the string representing the name of the numbering system.

int getRadix()

Returns the radix of the current numbering system.

boolean isAlgorithmic()

Returns the numbering system's algorithmic status.

static boolean isValidDigitString(String str)

Convenience method to determine if a given digit string is valid for use as a descriptor of a numeric ( non-algorithmic ) numbering system.

Inherited methods

Public constructors

NumberingSystem

added in API level 24
public NumberingSystem ()

Default constructor. Returns a numbering system that uses the Western decimal digits 0 through 9.

Public methods

getAvailableNames

added in API level 24
public static String[] getAvailableNames ()

Returns a string array containing a list of the names of numbering systems currently known to ICU.

Returns
String[]

getDescription

added in API level 24
public String getDescription ()

Returns the description string of the current numbering system. The description string describes the characteristics of the numbering system. For numeric systems, this string contains the digits used by the numbering system, in order, starting from zero. For algorithmic numbering systems, the string contains the name of the RBNF ruleset in the locale's NumberingSystemRules section that will be used to format numbers using this numbering system.

Returns
String

getInstance

added in API level 24
public static NumberingSystem getInstance (ULocale locale)

Returns the default numbering system for the specified ULocale.

Parameters
locale ULocale

Returns
NumberingSystem

getInstance

added in API level 24
public static NumberingSystem getInstance (Locale inLocale)

Returns the default numbering system for the specified locale.

Parameters
inLocale Locale

Returns
NumberingSystem

getInstance

added in API level 24
public static NumberingSystem getInstance ()

Returns the default numbering system for the default FORMAT locale.

Returns
NumberingSystem

getInstance

added in API level 24
public static NumberingSystem getInstance (int radix_in, 
                boolean isAlgorithmic_in, 
                String desc_in)

Factory method for creating a numbering system.

Parameters
radix_in int: The radix for this numbering system. ICU currently supports only numbering systems whose radix is 10.

isAlgorithmic_in boolean: Specifies whether the numbering system is algorithmic (true) or numeric (false).

desc_in String: String used to describe the characteristics of the numbering system. For numeric systems, this string contains the digits used by the numbering system, in order, starting from zero. For algorithmic numbering systems, the string contains the name of the RBNF ruleset in the locale's NumberingSystemRules section that will be used to format numbers using this numbering system.

Returns
NumberingSystem

getInstanceByName

added in API level 24
public static NumberingSystem getInstanceByName (String name)

Returns a numbering system from one of the predefined numbering systems known to ICU. Numbering system names are based on the numbering systems defined in CLDR. To get a list of available numbering systems, use the getAvailableNames method.

Parameters
name String: The name of the desired numbering system. Numbering system names often correspond with the name of the script they are associated with. For example, "thai" for Thai digits, "hebr" for Hebrew numerals.

Returns
NumberingSystem

getName

added in API level 24
public String getName ()

Returns the string representing the name of the numbering system.

Returns
String

getRadix

added in API level 24
public int getRadix ()

Returns the radix of the current numbering system.

Returns
int

isAlgorithmic

added in API level 24
public boolean isAlgorithmic ()

Returns the numbering system's algorithmic status. If true, the numbering system is algorithmic and uses an RBNF formatter to format numerals. If false, the numbering system is numeric and uses a fixed set of digits.

Returns
boolean

isValidDigitString

added in API level 24
public static boolean isValidDigitString (String str)

Convenience method to determine if a given digit string is valid for use as a descriptor of a numeric ( non-algorithmic ) numbering system. In order for a digit string to be valid, it must contain exactly ten Unicode code points.

Parameters
str String

Returns
boolean