Skip to content

Most visited

Recently visited

navigation
Added in API level 1

AlteredCharSequence

public class AlteredCharSequence
extends Object implements CharSequence, GetChars

java.lang.Object
   ↳ android.text.AlteredCharSequence


An AlteredCharSequence is a CharSequence that is largely mirrored from another CharSequence, except that a specified range of characters are mirrored from a different char array instead.

Summary

Public methods

char charAt(int off)

Returns the char value at the specified index.

void getChars(int start, int end, char[] dest, int off)

Exactly like String.getChars(): copy chars start through end - 1 from this CharSequence into dest beginning at offset destoff.

int length()

Returns the length of this character sequence.

static AlteredCharSequence make(CharSequence source, char[] sub, int substart, int subend)

Create an AlteredCharSequence whose text (and possibly spans) are mirrored from source, except that the range of offsets substart inclusive to subend exclusive are mirrored instead from sub, beginning at offset 0.

CharSequence subSequence(int start, int end)

Returns a new CharSequence that is a subsequence of this sequence.

String toString()

Returns a string representation of the object.

Inherited methods

From class java.lang.Object
From interface java.lang.CharSequence
From interface android.text.GetChars

Public methods

charAt

Added in API level 1
char charAt (int off)

Returns the char value at the specified index. An index ranges from zero to length() - 1. The first char value of the sequence is at index zero, the next at index one, and so on, as for array indexing.

If the char value specified by the index is a surrogate, the surrogate value is returned.

Parameters
off int: the index of the char value to be returned
Returns
char the specified char value

getChars

Added in API level 1
void getChars (int start, 
                int end, 
                char[] dest, 
                int off)

Exactly like String.getChars(): copy chars start through end - 1 from this CharSequence into dest beginning at offset destoff.

Parameters
start int
end int
dest char
off int

length

Added in API level 1
int length ()

Returns the length of this character sequence. The length is the number of 16-bit chars in the sequence.

Returns
int the number of chars in this sequence

make

Added in API level 1
AlteredCharSequence make (CharSequence source, 
                char[] sub, 
                int substart, 
                int subend)

Create an AlteredCharSequence whose text (and possibly spans) are mirrored from source, except that the range of offsets substart inclusive to subend exclusive are mirrored instead from sub, beginning at offset 0.

Parameters
source CharSequence
sub char
substart int
subend int
Returns
AlteredCharSequence

subSequence

Added in API level 1
CharSequence subSequence (int start, 
                int end)

Returns a new CharSequence that is a subsequence of this sequence. The subsequence starts with the char value at the specified index and ends with the char value at index end - 1. The length (in chars) of the returned sequence is end - start, so if start == end then an empty sequence is returned.

Parameters
start int: the start index, inclusive
end int: the end index, exclusive
Returns
CharSequence the specified subsequence

toString

Added in API level 1
String toString ()

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Returns
String a string representation of the object.
This site uses cookies to store your preferences for site-specific language and display options.

Hooray!

This class requires API level or higher

This doc is hidden because your selected API level for the documentation is . You can change the documentation API level with the selector above the left navigation.

For more information about specifying the API level your app requires, read Supporting Different Platform Versions.