public class SpannableString extends Object implements CharSequence, GetChars, Spannable
SpannableStringBuilder
.Spannable.Factory
SPAN_COMPOSING, SPAN_EXCLUSIVE_EXCLUSIVE, SPAN_EXCLUSIVE_INCLUSIVE, SPAN_INCLUSIVE_EXCLUSIVE, SPAN_INCLUSIVE_INCLUSIVE, SPAN_INTERMEDIATE, SPAN_MARK_MARK, SPAN_MARK_POINT, SPAN_PARAGRAPH, SPAN_POINT_MARK, SPAN_POINT_MARK_MASK, SPAN_POINT_POINT, SPAN_PRIORITY, SPAN_PRIORITY_SHIFT, SPAN_USER, SPAN_USER_SHIFT
Constructor and Description |
---|
SpannableString(CharSequence source) |
Modifier and Type | Method and Description |
---|---|
char |
charAt(int i) |
boolean |
equals(Object o)
Indicates whether some other object is "equal to" this one.
|
void |
getChars(int start,
int end,
char[] dest,
int off) |
int |
getSpanEnd(Object what) |
int |
getSpanFlags(Object what) |
<T> T[] |
getSpans(int queryStart,
int queryEnd,
Class<T> kind) |
int |
getSpanStart(Object what) |
int |
hashCode()
Returns a hash code value for the object.
|
int |
length() |
int |
nextSpanTransition(int start,
int limit,
Class kind) |
void |
removeSpan(Object what)
Remove the specified object from the range of text to which it
was attached, if any.
|
void |
setSpan(Object what,
int start,
int end,
int flags)
Attach the specified markup object to the range
start…end
of the text, or move the object to that range if it was already
attached elsewhere. |
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.
|
static SpannableString |
valueOf(CharSequence source) |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
getSpanEnd, getSpanFlags, getSpans, getSpanStart, nextSpanTransition
charAt, chars, codePoints, length, toString
public SpannableString(CharSequence source)
public static SpannableString valueOf(CharSequence source)
public void setSpan(Object what, int start, int end, int flags)
Spannable
start…end
of the text, or move the object to that range if it was already
attached elsewhere. See Spanned
for an explanation of
what the flags mean. The object can be one that has meaning only
within your application, or it can be one that the text system will
use to affect text display or behavior. Some noteworthy ones are
the subclasses of CharacterStyle
and
ParagraphStyle
, and
TextWatcher
and
SpanWatcher
.public void removeSpan(Object what)
Spannable
removeSpan
in interface Spannable
public final CharSequence subSequence(int start, int end)
CharSequence
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. subSequence
in interface CharSequence
start
- the start index, inclusiveend
- the end index, exclusivepublic final int length()
public final char charAt(int i)
public final String toString()
Object
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())
public final void getChars(int start, int end, char[] dest, int off)
public int getSpanStart(Object what)
public int getSpanEnd(Object what)
public int getSpanFlags(Object what)
public <T> T[] getSpans(int queryStart, int queryEnd, Class<T> kind)
public int nextSpanTransition(int start, int limit, Class kind)
public boolean equals(Object o)
Object
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.
equals
in class Object
o
- the reference object with which to compare.true
if this object is the same as the obj
argument; false
otherwise.Object.hashCode()
,
HashMap
public int hashCode()
Object
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.
Object.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.)
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)