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 |
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Public constructors | |
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StyleSpan(Parcel src) Creates a | |
StyleSpan(int style) Creates a | |
StyleSpan(int style, int fontWeightAdjustment) Creates a | |
Public methods | |
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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 | |
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Public constructors
StyleSpan
public StyleSpan (Parcel src)
Creates a StyleSpan from a parcel.
| Parameters | |
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src | Parcel: the parcel This value cannot be null. |
StyleSpan
public StyleSpan (int style)
Creates a StyleSpan from a style.
| Parameters | |
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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(). |
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 | |
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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 | |
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int | |
getSpanTypeId
public int getSpanTypeId ()
Return a special type identifier for this span class.
| Returns | |
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int | |
getStyle
public int getStyle ()
Returns the style constant defined in Typeface.
| Returns | |
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int | |
toString
public String toString ()
Returns a string representation of the object.
| Returns | |
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String | a string representation of the object. |
updateDrawState
public void updateDrawState (TextPaint ds)
| Parameters | |
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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 |