AlteredCharSequence | Android Developers [proxy]

public class AlteredCharSequence
extends Object implements CharSequence, GetChars

This class was deprecated in API level 30.
The functionality this class offers is easily implemented outside the framework.

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 `CharSequence` that is a subsequence of this sequence.
`String`	`toString()` Returns a string representation of the object.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface java.lang.CharSequence

`abstract char`	`charAt(int index)` Returns the `char` value at the specified index.
`default IntStream`	`chars()` Returns a stream of `int` zero-extending the `char` values from this sequence.
`default IntStream`	`codePoints()` Returns a stream of code point values from this sequence.
`static int`	`compare(CharSequence cs1, CharSequence cs2)` Compares two `CharSequence` instances lexicographically.
`abstract int`	`length()` Returns the length of this character sequence.
`abstract CharSequence`	`subSequence(int start, int end)` Returns a `CharSequence` that is a subsequence of this sequence.
`abstract String`	`toString()` Returns a string containing the characters in this sequence in the same order as this sequence.

From interface android.text.GetChars


      getChars(int start, int end, char[] dest, int destoff)

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

Public methods

charAt

public 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

public 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

public 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 `char`s in this sequence

make

public 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.

Parameters
`source`	`CharSequence`
`sub`	`char`
`substart`	`int`
`subend`	`int`

Returns
`AlteredCharSequence`

subSequence

public CharSequence subSequence (int start, 
                int end)

Returns a 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

public 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.