AlteredCharSequence
public
class
AlteredCharSequence
extends Object
implements
CharSequence,
GetChars
java.lang.Object | |
↳ | android.text.AlteredCharSequence |
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 |
void
|
getChars(int start, int end, char[] dest, int off)
Exactly like String.getChars(): copy chars |
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 |
CharSequence
|
subSequence(int start, int end)
Returns a |
String
|
toString()
Returns a string representation of the object. |
Inherited methods | |
---|---|
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 char
s 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 char
s) 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.
Returns | |
---|---|
String |
a string representation of the object. |