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);
 
Text styled bold and italic with the StyleSpan.

Summary

Inherited constants

Public constructors

StyleSpan(int style)

Creates a StyleSpan from a style.

StyleSpan(int style, int fontWeightAdjustment)

Creates a StyleSpan from a style and font weight adjustment.

StyleSpan(Parcel src)

Creates a StyleSpan from a parcel.

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 Typeface.

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

Added in API level 1
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

Added in API level 1
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

Added in API level 1
public StyleSpan (Parcel src)

Creates a StyleSpan from a parcel.

Parameters
src Parcel: the parcel This value cannot be null.

Public methods

describeContents

Added in API level 3
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

Added in API level 33
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

Added in API level 3
public int getSpanTypeId ()

Return a special type identifier for this span class.

Returns
int

getStyle

Added in API level 1
public int getStyle ()

Returns the style constant defined in Typeface.

Returns
int

toString

Added in API level 1
public String toString ()

Returns a string representation of the object.

Returns
String a string representation of the object.

updateDrawState

Added in API level 1
public void updateDrawState (TextPaint ds)

Parameters
ds TextPaint

updateMeasureState

Added in API level 1
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

Added in API level 3
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