程序包 ohos.agp.utils

类 TextTool

java.lang.Object

ohos.agp.utils.TextTool

public class TextTool
extends Object

A utility class for operating strings or characters.

从以下版本开始:

3

方法概要

限定符和类型	方法	说明
static int	findChar(CharSequence source, char destChar, int startIndex, int endIndex)	Finds the index of the destination character from the specified range of the source string.
static String	getSubstring(CharSequence source, int startIndex, int endIndex)	Obtains a new string based on the specified range of the source string.
static boolean	isEqual(CharSequence sourceA, CharSequence sourceB)	Checks whether the content of string A equals that of string B.
static boolean	isLayoutRightToLeft(Locale locale)	Checks whether the text layout of a specified Locale is from right to left.
static boolean	isNullOrEmpty(CharSequence source)	Checks whether the source string is empty.
static CharSequence	replaceCharSequence(CharSequence source, char[] originalCharacterSet, char[] replacementCharacterSet)	Replaces one or more target characters in the input text with one or more specified characters.
static char[]	subCharArray(CharSequence source, int startIndex, int endIndex)	Obtains a new character array based on the specified range of the source string.
static void	subCharArray(CharSequence source, int startIndex, int endIndex, char[] destChars, int destIndex)	Obtains a new character array based on the specified range of the source string and puts the array in a particular position of the destination character array.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

isNullOrEmpty

public static boolean isNullOrEmpty(CharSequence source)

Checks whether the source string is empty.

参数:

source - Indicates the source string to check.

返回:

Returns true if the string is empty; returns false otherwise.

从以下版本开始:

3

isEqual

public static boolean isEqual(CharSequence sourceA,
                              CharSequence sourceB)

Checks whether the content of string A equals that of string B.

参数:

sourceA - Indicates the source string A to compare.

sourceB - Indicates the source string B to compare.

返回:

Returns true if the contents of the two strings are equal; returns false otherwise.

从以下版本开始:

3

isLayoutRightToLeft

public static boolean isLayoutRightToLeft(Locale locale)

Checks whether the text layout of a specified Locale is from right to left.

参数:

locale - Indicates the locale to check. This parameter can be null.

返回:

Returns true if the layout is from right to left; returns false if the layout is from left to right or if locale is null.

从以下版本开始:

3

findChar

public static int findChar(CharSequence source,
                           char destChar,
                           int startIndex,
                           int endIndex)

Finds the index of the destination character from the specified range of the source string.

参数:

source - Indicates the source string.

destChar - Indicates the destination character to find.

startIndex - Indicates the start index of the search range.

endIndex - Indicates the end index of the search range.

返回:

Returns the index of the destination character if the operation is successful; returns -1 otherwise.

从以下版本开始:

3

getSubstring

public static String getSubstring(CharSequence source,
                                  int startIndex,
                                  int endIndex)

Obtains a new string based on the specified range of the source string.

参数:

source - Indicates the source string.

startIndex - Indicates the start index of the search range.

endIndex - Indicates the end index of the search range.

返回:

Returns the new string.

从以下版本开始:

3

subCharArray

public static char[] subCharArray(CharSequence source,
                                  int startIndex,
                                  int endIndex)

Obtains a new character array based on the specified range of the source string.

参数:

source - Indicates the source string.

startIndex - Indicates the start index of the search range.

endIndex - Indicates the end index of the search range.

返回:

Returns the new character array.

从以下版本开始:

3

subCharArray

public static void subCharArray(CharSequence source,
                                int startIndex,
                                int endIndex,
                                char[] destChars,
                                int destIndex)

Obtains a new character array based on the specified range of the source string and puts the array in a particular position of the destination character array.

参数:

source - Indicates the source string.

startIndex - Indicates the start index of the search range.

endIndex - Indicates the end index of the search range.

destChars - Indicates the destination character array.

destIndex - Indicates the start index in the destination character array for putting the obtained array.

从以下版本开始:

3

replaceCharSequence

public static CharSequence replaceCharSequence(CharSequence source,
                                               char[] originalCharacterSet,
                                               char[] replacementCharacterSet)

Replaces one or more target characters in the input text with one or more specified characters. Both plain text and RichText are supported.

This method does not change source.

参数:

source - Indicates the target text.

originalCharacterSet - Indicates the character set to be replaced.

replacementCharacterSet - Indicates the character set for replacement.

返回:

Returns the new text if source is not null ; returns an empty string otherwise.

从以下版本开始:

7