SegmentFinder
public
abstract
class
SegmentFinder
extends Object
java.lang.Object | |
↳ | android.text.SegmentFinder |
Finds text segment boundaries within text. Subclasses can implement different types of text
segments. Grapheme clusters and words are examples of possible text segments. These are
implemented by GraphemeClusterSegmentFinder
and WordSegmentFinder
.
Text segments may not overlap, so every character belongs to at most one text segment. A character may belong to no text segments.
For example, WordSegmentFinder subdivides the text "Hello, World!" into four text segments: "Hello", ",", "World", "!". The space character does not belong to any text segments.
Summary
Nested classes | |
---|---|
class |
SegmentFinder.PrescribedSegmentFinder
The default |
Constants | |
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int |
DONE
Return value of previousStartBoundary(int), previousEndBoundary(int), nextStartBoundary(int), and nextEndBoundary(int) when there are no boundaries of the specified type in the specified direction. |
Public constructors | |
---|---|
SegmentFinder()
|
Public methods | |
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abstract
int
|
nextEndBoundary(int offset)
Returns the character offset of the next text segment end boundary after the specified
character offset, or |
abstract
int
|
nextStartBoundary(int offset)
Returns the character offset of the next text segment start boundary after the specified
character offset, or |
abstract
int
|
previousEndBoundary(int offset)
Returns the character offset of the previous text segment end boundary before the specified
character offset, or |
abstract
int
|
previousStartBoundary(int offset)
Returns the character offset of the previous text segment start boundary before the specified
character offset, or |
Inherited methods | |
---|---|
Constants
DONE
public static final int DONE
Return value of previousStartBoundary(int), previousEndBoundary(int), nextStartBoundary(int), and nextEndBoundary(int) when there are no boundaries of the specified type in the specified direction.
Constant Value: -1 (0xffffffff)
Public constructors
SegmentFinder
public SegmentFinder ()
Public methods
nextEndBoundary
public abstract int nextEndBoundary (int offset)
Returns the character offset of the next text segment end boundary after the specified
character offset, or DONE
if there are none.
Parameters | |
---|---|
offset |
int : Value is 0 or greater |
Returns | |
---|---|
int |
nextStartBoundary
public abstract int nextStartBoundary (int offset)
Returns the character offset of the next text segment start boundary after the specified
character offset, or DONE
if there are none.
Parameters | |
---|---|
offset |
int : Value is 0 or greater |
Returns | |
---|---|
int |
previousEndBoundary
public abstract int previousEndBoundary (int offset)
Returns the character offset of the previous text segment end boundary before the specified
character offset, or DONE
if there are none.
Parameters | |
---|---|
offset |
int : Value is 0 or greater |
Returns | |
---|---|
int |
previousStartBoundary
public abstract int previousStartBoundary (int offset)
Returns the character offset of the previous text segment start boundary before the specified
character offset, or DONE
if there are none.
Parameters | |
---|---|
offset |
int : Value is 0 or greater |
Returns | |
---|---|
int |
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Last updated 2024-04-04 UTC.
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Fetched URL: http://developer.android.com/reference/android/text/SegmentFinder
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