public
final
class
SpannedString
extends Object
implements
CharSequence,
GetChars,
Spanned
java.lang.Object | |
↳ | android.text.SpannedString |
This is the class for text whose content and markup are immutable.
For mutable markup, see SpannableString
; for mutable text,
see SpannableStringBuilder
.
Inherited constants |
---|
From
interface
android.text.Spanned
|
Public constructors | |
---|---|
SpannedString(CharSequence source)
|
Public methods | |
---|---|
final
char
|
charAt(int i)
Returns the |
boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
final
void
|
getChars(int start, int end, char[] dest, int off)
Exactly like String.getChars(): copy chars |
int
|
getSpanEnd(Object what)
Return the end of the range of text to which the specified markup object is attached, or -1 if the object is not attached. |
int
|
getSpanFlags(Object what)
Return the flags that were specified when |
int
|
getSpanStart(Object what)
Return the beginning of the range of text to which the specified markup object is attached, or -1 if the object is not attached. |
<T>
T[]
|
getSpans(int queryStart, int queryEnd, Class<T> kind)
Return an array of the markup objects attached to the specified slice of this CharSequence and whose type is the specified type or a subclass of it. |
int
|
hashCode()
Returns a hash code value for the object. |
final
int
|
length()
Returns the length of this character sequence. |
int
|
nextSpanTransition(int start, int limit, Class kind)
Return the first offset greater than |
CharSequence
|
subSequence(int start, int end)
Returns a new |
final
String
|
toString()
Returns a string representation of the object. |
static
SpannedString
|
valueOf(CharSequence source)
|
Inherited methods | |
---|---|
From
class
java.lang.Object
| |
From
interface
java.lang.CharSequence
| |
From
interface
android.text.GetChars
| |
From
interface
android.text.Spanned
|
SpannedString (CharSequence source)
Parameters | |
---|---|
source |
CharSequence
|
char charAt (int i)
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 | |
---|---|
i |
int :
the index of the char value to be returned |
Returns | |
---|---|
char |
the specified char value |
boolean equals (Object o)
Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
Parameters | |
---|---|
o |
Object :
the reference object with which to compare. |
Returns | |
---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
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
|
int getSpanEnd (Object what)
Return the end of the range of text to which the specified markup object is attached, or -1 if the object is not attached.
Parameters | |
---|---|
what |
Object
|
Returns | |
---|---|
int |
int getSpanFlags (Object what)
Return the flags that were specified when setSpan(Object, int, int, int)
was
used to attach the specified markup object, or 0 if the specified
object has not been attached.
Parameters | |
---|---|
what |
Object
|
Returns | |
---|---|
int |
int getSpanStart (Object what)
Return the beginning of the range of text to which the specified markup object is attached, or -1 if the object is not attached.
Parameters | |
---|---|
what |
Object
|
Returns | |
---|---|
int |
T[] getSpans (int queryStart, int queryEnd, Class<T> kind)
Return an array of the markup objects attached to the specified slice of this CharSequence and whose type is the specified type or a subclass of it. Specify Object.class for the type if you want all the objects regardless of type.
Parameters | |
---|---|
queryStart |
int
|
queryEnd |
int
|
kind |
Class
|
Returns | |
---|---|
T[] |
int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
equals(java.lang.Object)
method, then calling the hashCode
method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
JavaTM programming language.)
Returns | |
---|---|
int |
a hash code value for this object. |
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
|
int nextSpanTransition (int start, int limit, Class kind)
Return the first offset greater than start
where a markup
object of class type
begins or ends, or limit
if there are no starts or ends greater than start
but less
than limit
. Specify null
or Object.class for
the type if you want every transition regardless of type.
Parameters | |
---|---|
start |
int
|
limit |
int
|
kind |
Class
|
Returns | |
---|---|
int |
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 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 |
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. |
SpannedString valueOf (CharSequence source)
Parameters | |
---|---|
source |
CharSequence
|
Returns | |
---|---|
SpannedString |