StyleSpan
public
class
StyleSpan
extends MetricAffectingSpan
implements
ParcelableSpan
java.lang.Object | |||
↳ | android.text.style.CharacterStyle | ||
↳ | android.text.style.MetricAffectingSpan | ||
↳ | android.text.style.StyleSpan |
Span that allows setting the style of the text it's attached to.
Possible styles are: Typeface#NORMAL
, Typeface#BOLD
, Typeface#ITALIC
and
Typeface#BOLD_ITALIC
.
Note that styles are cumulative -- if both bold and italic are set in separate spans, or if the base style is bold and a span calls for italic, you get bold italic. You can't turn off a style from the base style.
For example, the StyleSpan
can be used like this:
SpannableString string = new SpannableString("Bold and italic text"); string.setSpan(new StyleSpan(Typeface.BOLD), 0, 4, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); string.setSpan(new StyleSpan(Typeface.ITALIC), 9, 15, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
StyleSpan
.Summary
Inherited constants |
---|
Public constructors | |
---|---|
StyleSpan(int style)
Creates a |
|
StyleSpan(int style, int fontWeightAdjustment)
Creates a |
|
StyleSpan(Parcel src)
Creates a |
Public methods | |
---|---|
int
|
describeContents()
Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. |
int
|
getFontWeightAdjustment()
Returns the font weight adjustment specified by this span. |
int
|
getSpanTypeId()
Return a special type identifier for this span class. |
int
|
getStyle()
Returns the style constant defined in |
String
|
toString()
Returns a string representation of the object. |
void
|
updateDrawState(TextPaint ds)
|
void
|
updateMeasureState(TextPaint paint)
Classes that extend MetricAffectingSpan implement this method to update the text formatting in a way that can change the width or height of characters. |
void
|
writeToParcel(Parcel dest, int flags)
Flatten this object in to a Parcel. |
Inherited methods | |
---|---|
Public constructors
StyleSpan
public StyleSpan (int style)
Creates a StyleSpan
from a style.
Parameters | |
---|---|
style |
int : An integer constant describing the style for this span. Examples
include bold, italic, and normal. Values are constants defined
in Typeface . |
StyleSpan
public StyleSpan (int style, int fontWeightAdjustment)
Creates a StyleSpan
from a style and font weight adjustment.
Parameters | |
---|---|
style |
int : An integer constant describing the style for this span. Examples
include bold, italic, and normal. Values are constants defined
in Typeface .
Value is Typeface.NORMAL , Typeface.BOLD , Typeface.ITALIC , or Typeface.BOLD_ITALIC |
fontWeightAdjustment |
int : An integer describing the adjustment to be made to the font
weight. This is added to the value of the current weight returned by
Typeface#getWeight() . |
StyleSpan
public StyleSpan (Parcel src)
Creates a StyleSpan
from a parcel.
Parameters | |
---|---|
src |
Parcel : the parcel
This value cannot be null . |
Public methods
describeContents
public int describeContents ()
Describe the kinds of special objects contained in this Parcelable
instance's marshaled representation. For example, if the object will
include a file descriptor in the output of writeToParcel(android.os.Parcel, int)
,
the return value of this method must include the
CONTENTS_FILE_DESCRIPTOR
bit.
Returns | |
---|---|
int |
a bitmask indicating the set of special object types marshaled
by this Parcelable object instance.
Value is either 0 or CONTENTS_FILE_DESCRIPTOR |
getFontWeightAdjustment
public int getFontWeightAdjustment ()
Returns the font weight adjustment specified by this span.
This can be Configuration#FONT_WEIGHT_ADJUSTMENT_UNDEFINED
. This is added to the
value of the current weight returned by Typeface#getWeight()
.
Returns | |
---|---|
int |
getSpanTypeId
public int getSpanTypeId ()
Return a special type identifier for this span class.
Returns | |
---|---|
int |
getStyle
public int getStyle ()
Returns the style constant defined in Typeface
.
Returns | |
---|---|
int |
toString
public String toString ()
Returns a string representation of the object.
Returns | |
---|---|
String |
a string representation of the object. |
updateDrawState
public void updateDrawState (TextPaint ds)
Parameters | |
---|---|
ds |
TextPaint |
updateMeasureState
public void updateMeasureState (TextPaint paint)
Classes that extend MetricAffectingSpan implement this method to update the text formatting in a way that can change the width or height of characters.
Parameters | |
---|---|
paint |
TextPaint : the paint used for drawing the text
This value cannot be null . |
writeToParcel
public void writeToParcel (Parcel dest, int flags)
Flatten this object in to a Parcel.
Parameters | |
---|---|
dest |
Parcel : The Parcel in which the object should be written.
This value cannot be null . |
flags |
int : Additional flags about how the object should be written.
May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE .
Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE , and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES |