TextLayout

java.lang.Object
- ohos.agp.text.TextLayout

```
public class TextLayout
extends Object
```
A default implementation class for text layout, which supports both plain text and rich text. In addition, the text layout can be edited. TextLayout does not directly generate layouts in the constructor. Instead, it generates layouts only when you explicitly call doLayout(). You can use setters to change your input data and call doLayout() to lay out the text. The default values are used for the APIs that are not explicitly set. For details, see the description of each API.

从以下版本开始:

7

嵌套类概要

嵌套类
限定符和类型	类	说明
`static class`	`TextLayout.CursorMoveDirection`	Enumerates the cursor movement directions.
`static class`	`TextLayout.FontPaddingStrategy`	Enumerates the font padding strategies.
`static class`	`TextLayout.HyphenationStrategy`	Enumerates the hyphenation strategies.
`static class`	`TextLayout.JustifyStrategy`	Enumerates the text justification strategies.
`static class`	`TextLayout.LineBreakStrategy`	Enumerates the line breaking strategies.

字段概要

字段
限定符和类型	字段	说明
`protected Paint`	`mPaint`	Used for paint reference.
`protected RichText`	`mRichText`	Used for RichText reference.
`protected String`	`mText`	Used for plain text reference.

构造器概要

构造器
构造器	说明
`TextLayout()`	A constructor used to create a `TextLayout` instance without any parameter.
`TextLayout(String text, Paint paint, int widthLimit)`	A constructor used to create a `TextLayout` instance with the specified text, paint attribute of the text, and maximum width of the text.
`TextLayout(RichText richText, Paint paint, int widthLimit)`	A constructor used to create a `TextLayout` instance with the specified `richText`, paint attribute of the text, and maximum width of the text.

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`void`	`doLayout()`	Lays out the text.
`void`	`drawText(Canvas canvas)`	Draws text on the specified `canvas` object after the layout is complete.
`int`	`getBeginCharIndex(int line)`	Obtains the index of the first character of a specific line in this `TextLayout`.
`Point`	`getCursorCoordinates(int offset)`	Obtains the cursor position of a specific text offset.
`float`	`getCursorHorizontalCoordinate(int offset)`	Obtains the cursor's horizontal position of a specific text offset.
`int`	`getEndCharIndex(int line)`	Obtains the index of the last character of a specific line, including trailing spaces.
`int`	`getEndCharIndex(int line, boolean withTrailingSpace)`	Obtains the index of the last character of a specific line in this `TextLayout`.
`float`	`getHeight()`	Obtains the height of this `TextLayout`.
`float`	`getLineAscent(int line)`	Obtains the ascent of a specific line in this `TextLayout`.
`float`	`getLineBaseline(int line)`	Obtains the baseline position of a specific line, which is a vertical offset from the beginning of this `TextLayout`.
`float`	`getLineBottom(int line)`	Obtains the bottom position of a specific line.
`int`	`getLineCount()`	Obtains the number of lines in this `TextLayout`.
`float`	`getLineDescent(int line)`	Obtains the descent of a specific line in this `TextLayout`.
`float`	`getLineEndPosition(int line)`	Obtains the horizontal coordinate of the end of a specific line, including trailing spaces.
`float`	`getLineEndPosition(int line, boolean withTrailingSpace)`	Obtains the horizontal coordinate of the end of a specific line.
`float`	`getLineHeight(int line)`	Obtains the height of a specific line.
`float`	`getLineIndentWidth(int line)`	Obtains the indent width of a specific line.
`int`	`getLineIndexByCharIndex(int charIndex)`	Obtains the index of the line where a specific indexed character is located.
`int`	`getLineIndexByCoordinate(float coordinateY)`	Obtains the index of the line that is located at a specific vertical coordinate.
`float`	`getLineLeftPosition(int line)`	Obtains the leftmost horizontal coordinate of the specified line, including indents and trailing spaces.
`float`	`getLineLeftPosition(int line, boolean withIndentOrSpace)`	Obtains the leftmost horizontal coordinate of the specified line.
`float`	`getLineRightPosition(int line)`	Obtains the rightmost horizontal coordinate of the specified line, including indents and trailing spaces.
`float`	`getLineRightPosition(int line, boolean withIndentOrSpace)`	Obtains the rightmost horizontal coordinate of the specified line.
`float`	`getLineStartPosition(int line)`	Obtains the horizontal coordinate of the start of a specific line, including indents.
`float`	`getLineStartPosition(int line, boolean withIndent)`	Obtains the horizontal coordinate of the start of a specific line.
`float`	`getLineTop(int line)`	Obtains the top position of a specific line, which is a vertical offset from the beginning of this `TextLayout`.
`float`	`getLineWidth(int line)`	Obtains the width of a specific line, including indents and trailing spaces.
`float`	`getLineWidth(int line, boolean withIndent, boolean withTrailingSpace)`	Obtains the width of a specific line.
`int`	`getOffsetByCoordinate(int line, float coordinateX)`	Obtains the offset of the character that is closest to the given horizontal coordinate in a specific line.
`int`	`getOffsetByCoordinates(float x, float y)`	Obtains the offset of the character that is closest to the given coordinates.
`int`	`getOffsetByMoveDirection(int offset, TextLayout.CursorMoveDirection direction)`	Obtains the target cursor offset with the specified direction.
`float`	`getWidth()`	Obtains the width of the longest line including trailing spaces, in this `TextLayout`.
`float`	`getWidth(boolean withTrailingSpace)`	Obtains the width of the longest line, in this `TextLayout`.
`boolean`	`isLineWithTab(int line)`	Checks whether the specified line contains tab characters.
`boolean`	`isRtlLine(int line)`	Obtains the main direction of the specified line.
`void`	`setBidiStrategy(BidiAnalyzer.BidiStrategy bidi)`	Sets the bidirectional text recognition strategy for this `TextLayout`.
`void`	`setFallbackFontMetricsEnabled(Boolean fallbackFontMetricsEnabled)`	Sets whether to enable ascent or descent metrics for fallback fonts.
`void`	`setFontPaddingStrategy(TextLayout.FontPaddingStrategy fontPadding)`	Sets the font padding strategy for this `TextLayout`.
`void`	`setHyphenationStrategy(TextLayout.HyphenationStrategy hyphenationStrategy)`	Sets the hyphenation strategy for this `TextLayout`.
`void`	`setJustifyStrategy(TextLayout.JustifyStrategy justifyStrategy)`	Sets the text justification strategy for this `TextLayout`.
`void`	`setLineBreakStrategy(TextLayout.LineBreakStrategy lineBreakStrategy)`	Sets the line breaking strategy for this `TextLayout`.
`void`	`setPaint(Paint paint)`	Sets the paint for this `TextLayout`.
`void`	`setRichText(RichText richText)`	Sets the rich text for this `TextLayout`.
`void`	`setText(String text)`	Sets the plain text for this `TextLayout`.
`void`	`setWidthLimit(int widthLimit)`	Sets the width limit for this `TextLayout`.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 字段详细资料
  - mPaint
```
protected Paint mPaint
```
    Used for paint reference. The value must not be null.
  - mRichText
```
protected RichText mRichText
```
    Used for RichText reference. The value must be null in the plain text case.
  - mText
```
protected String mText
```
    Used for plain text reference. The value must be null in the rich text case.
- 构造器详细资料
  - TextLayout
```
public TextLayout()
```
    A constructor used to create a TextLayout instance without any parameter. You need to set parameters before calling doLayout().
    
    从以下版本开始:
    
    7
  - TextLayout
```
public TextLayout(String text,
                  Paint paint,
                  int widthLimit)
           throws NullPointerException
```
    A constructor used to create a TextLayout instance with the specified text, paint attribute of the text, and maximum width of the text. This constructor will leave the other parameters as default. You can set the other parameters before calling doLayout().
    
    参数:
    
    text - Indicates the text to set.
    
    paint - Indicates the paint used for drawing text.
    
    widthLimit - Indicates the maximum width of the text.
    
    抛出:
    
    NullPointerException - Throws this exception if any parameter is null.
    
    从以下版本开始:
    
    7
  - TextLayout
```
public TextLayout(RichText richText,
                  Paint paint,
                  int widthLimit)
           throws NullPointerException
```
    A constructor used to create a TextLayout instance with the specified richText, paint attribute of the text, and maximum width of the text. This constructor will leave the other parameters as default. You can set the other parameters before calling doLayout().
    
    参数:
    
    richText - Indicates the RichText.
    
    paint - Indicates the paint used for drawing text.
    
    widthLimit - Indicates the maximum width of the text.
    
    抛出:
    
    NullPointerException - Throws this exception if any parameter is null.
    
    从以下版本开始:
    
    7
- 方法详细资料
  - setText
```
public void setText(String text)
             throws NullPointerException
```
    Sets the plain text for this TextLayout.
    
    参数:
    
    text - Indicates the plain text to set.
    
    抛出:
    
    NullPointerException - Throws this exception if text is null.
    
    从以下版本开始:
    
    7
  - setRichText
```
public void setRichText(RichText richText)
                 throws NullPointerException
```
    Sets the rich text for this TextLayout.
    
    参数:
    
    richText - Indicates the rich text to set.
    
    抛出:
    
    NullPointerException - Throws this exception if richText is null.
    
    从以下版本开始:
    
    7
  - setPaint
```
public void setPaint(Paint paint)
              throws NullPointerException
```
    Sets the paint for this TextLayout.
    
    参数:
    
    paint - Indicates the paint to set.
    
    抛出:
    
    NullPointerException - Throws this exception if paint is null.
    
    从以下版本开始:
    
    7
  - setWidthLimit
```
public void setWidthLimit(int widthLimit)
```
    Sets the width limit for this TextLayout.
    
    参数:
    
    widthLimit - Indicates the width limit to set.
    
    从以下版本开始:
    
    7
  - setBidiStrategy
```
public void setBidiStrategy(BidiAnalyzer.BidiStrategy bidi)
```
    Sets the bidirectional text recognition strategy for this TextLayout.
    The default bidirectional text recognition strategy is FIRSTSTRONG_OR_LTR.
    
    参数:
    
    bidi - Indicates the bidirectional text recognition strategy to set.
    
    从以下版本开始:
    
    7
  - setFallbackFontMetricsEnabled
```
public void setFallbackFontMetricsEnabled(Boolean fallbackFontMetricsEnabled)
```
    Sets whether to enable ascent or descent metrics for fallback fonts.
    
    参数:
    
    fallbackFontMetricsEnabled - Specifies whether to enable fallback font metrics. The value true means to enable ascent or descent metrics for fallback fonts, and false means the opposite. The default value is true.
    
    从以下版本开始:
    
    7
  - setFontPaddingStrategy
```
public void setFontPaddingStrategy(TextLayout.FontPaddingStrategy fontPadding)
```
    Sets the font padding strategy for this TextLayout.
    
    参数:
    
    fontPadding - Indicates the font padding strategy to set.
    
    从以下版本开始:
    
    7
  - setLineBreakStrategy
```
public void setLineBreakStrategy(TextLayout.LineBreakStrategy lineBreakStrategy)
```
    Sets the line breaking strategy for this TextLayout.
    
    参数:
    
    lineBreakStrategy - Indicates the line breaking strategy to set.
    
    从以下版本开始:
    
    7
  - setHyphenationStrategy
```
public void setHyphenationStrategy(TextLayout.HyphenationStrategy hyphenationStrategy)
```
    Sets the hyphenation strategy for this TextLayout.
    
    参数:
    
    hyphenationStrategy - Indicates the hyphenation strategy to set.
    
    从以下版本开始:
    
    7
  - setJustifyStrategy
```
public void setJustifyStrategy(TextLayout.JustifyStrategy justifyStrategy)
```
    Sets the text justification strategy for this TextLayout.
    
    参数:
    
    justifyStrategy - Indicates the text justification strategy to set.
    
    从以下版本开始:
    
    7
  - doLayout
```
public void doLayout()
```
    Lays out the text.
    The speed of this method depends on the previous setters. The layout can be obtained through a Get method only after doLayout() is called.
    
    从以下版本开始:
    
    7
  - drawText
```
public void drawText(Canvas canvas)
```
    Draws text on the specified canvas object after the layout is complete.
    You may need to perform translation and clipping manually.
    
    参数:
    
    canvas - Indicates the Canvas object.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    Canvas.clipRect(Rect), Canvas.translate(float, float)
  - getWidth
```
public float getWidth()
```
    Obtains the width of the longest line including trailing spaces, in this TextLayout.
    
    返回:
    
    Returns the width of the longest line, in pixels.
    
    从以下版本开始:
    
    7
  - getWidth
```
public float getWidth(boolean withTrailingSpace)
```
    Obtains the width of the longest line, in this TextLayout.
    
    参数:
    
    withTrailingSpace - Specifies whether to include trailing spaces. The value true means to include the trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the width of the longest line, in pixels.
    
    从以下版本开始:
    
    7
  - getHeight
```
public float getHeight()
```
    Obtains the height of this TextLayout. The height is restricted by the paint used to draw the text.
    
    返回:
    
    Returns the height, in pixels.
    
    从以下版本开始:
    
    7
  - getLineCount
```
public int getLineCount()
```
    Obtains the number of lines in this TextLayout. The number of lines is restricted by the paint used to draw the text.
    
    返回:
    
    Returns the number of lines.
    
    从以下版本开始:
    
    7
  - getLineWidth
```
public float getLineWidth(int line)
```
    Obtains the width of a specific line, including indents and trailing spaces.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the width if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineWidth
```
public float getLineWidth(int line,
                          boolean withIndent,
                          boolean withTrailingSpace)
```
    Obtains the width of a specific line.
    
    参数:
    
    line - Indicates the line.
    
    withIndent - Specifies whether to include indents. The value true means to include indents, and false means the opposite.
    
    withTrailingSpace - Specifies whether to include trailing spaces. The value true means to include trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the width if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineIndentWidth
```
public float getLineIndentWidth(int line)
```
    Obtains the indent width of a specific line.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the indent width if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineHeight
```
public float getLineHeight(int line)
```
    Obtains the height of a specific line.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the height if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineBaseline
```
public float getLineBaseline(int line)
```
    Obtains the baseline position of a specific line, which is a vertical offset from the beginning of this TextLayout.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the baseline position if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineTop
```
public float getLineTop(int line)
```
    Obtains the top position of a specific line, which is a vertical offset from the beginning of this TextLayout.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the top position if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineBottom
```
public float getLineBottom(int line)
```
    Obtains the bottom position of a specific line. which is a vertical offset from the beginning of this TextLayout.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the bottom position if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineAscent
```
public float getLineAscent(int line)
```
    Obtains the ascent of a specific line in this TextLayout. Note that the ascent is a relative and negative value from the baseline.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the ascent if obtained; returns 1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineDescent
```
public float getLineDescent(int line)
```
    Obtains the descent of a specific line in this TextLayout. Note that the descent is a relative and positive value from the baseline.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the descent if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getBeginCharIndex
```
public int getBeginCharIndex(int line)
```
    Obtains the index of the first character of a specific line in this TextLayout.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the index if obtained; returns -1 if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getEndCharIndex
```
public int getEndCharIndex(int line)
```
    Obtains the index of the last character of a specific line, including trailing spaces.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the index if obtained; returns -1 if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getEndCharIndex
```
public int getEndCharIndex(int line,
                           boolean withTrailingSpace)
```
    Obtains the index of the last character of a specific line in this TextLayout.
    
    参数:
    
    line - Indicates the line.
    
    withTrailingSpace - Specifies whether to include trailing spaces. The value true means to include trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the index if obtained; returns -1 if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineIndexByCharIndex
```
public int getLineIndexByCharIndex(int charIndex)
```
    Obtains the index of the line where a specific indexed character is located.
    
    参数:
    
    charIndex - Indicates the index of the character.
    
    返回:
    
    Returns the line index if obtained; returns -1 if the value of charIndex is invalid.
    
    从以下版本开始:
    
    7
  - getLineIndexByCoordinate
```
public int getLineIndexByCoordinate(float coordinateY)
```
    Obtains the index of the line that is located at a specific vertical coordinate.
    
    参数:
    
    coordinateY - Indicates the vertical coordinate.
    
    返回:
    
    Returns the line index in the range from 0 to the total line number minus 1. You can use getLineCount() to obtain the total line number.
    
    从以下版本开始:
    
    7
  - getLineStartPosition
```
public float getLineStartPosition(int line)
```
    Obtains the horizontal coordinate of the start of a specific line, including indents.
    Note that the start position is on the right side in the RTL case.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineStartPosition
```
public float getLineStartPosition(int line,
                                  boolean withIndent)
```
    Obtains the horizontal coordinate of the start of a specific line.
    Note that the start position is on the right side in the RTL case.
    
    参数:
    
    line - Indicates the line.
    
    withIndent - Specifies whether to include indents. The value true means to include indents, and false means the opposite.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineLeftPosition
```
public float getLineLeftPosition(int line)
```
    Obtains the leftmost horizontal coordinate of the specified line, including indents and trailing spaces.
    This method is the same as getLineStartPosition(int) in the LTR case.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineLeftPosition
```
public float getLineLeftPosition(int line,
                                 boolean withIndentOrSpace)
```
    Obtains the leftmost horizontal coordinate of the specified line.
    This method is the same as getLineStartPosition(int,boolean) in the LTR case.
    
    参数:
    
    line - Indicates the line.
    
    withIndentOrSpace - Specifies whether to include indents and trailing spaces. The value true means to include indents and trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineEndPosition
```
public float getLineEndPosition(int line)
```
    Obtains the horizontal coordinate of the end of a specific line, including trailing spaces.
    Note that the end position is on the left side in the RTL case.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineEndPosition
```
public float getLineEndPosition(int line,
                                boolean withTrailingSpace)
```
    Obtains the horizontal coordinate of the end of a specific line.
    Note that the end position is on the left side in the RTL case.
    
    参数:
    
    line - Indicates the line.
    
    withTrailingSpace - Specifies whether to include trailing spaces. The value true means to include trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineRightPosition
```
public float getLineRightPosition(int line)
```
    Obtains the rightmost horizontal coordinate of the specified line, including indents and trailing spaces.
    This method is the same as getLineEndPosition(int) in the LTR case.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getLineRightPosition
```
public float getLineRightPosition(int line,
                                  boolean withIndentOrSpace)
```
    Obtains the rightmost horizontal coordinate of the specified line.
    This method is the same as getLineEndPosition(int,boolean) in the LTR case.
    
    参数:
    
    line - Indicates the line.
    
    withIndentOrSpace - Specifies whether to include indents and trailing spaces. The value true means to include indents and trailing spaces, and false means the opposite.
    
    返回:
    
    Returns the horizontal coordinate if obtained; returns -1.0f if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - isRtlLine
```
public boolean isRtlLine(int line)
```
    Obtains the main direction of the specified line.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns false if the value of line is invalid; returns true otherwise.
    
    从以下版本开始:
    
    7
  - isLineWithTab
```
public boolean isLineWithTab(int line)
```
    Checks whether the specified line contains tab characters.
    
    参数:
    
    line - Indicates the line.
    
    返回:
    
    Returns true if the specified line contains any tab character; returns false otherwise.
    
    从以下版本开始:
    
    7
  - getOffsetByCoordinates
```
public int getOffsetByCoordinates(float x,
                                  float y)
```
    Obtains the offset of the character that is closest to the given coordinates.
    Note that the offset ranges from 0 to the text length, that is, the offset may be the last character index plus 1.
    
    参数:
    
    x - Indicates the x-coordinate.
    
    y - Indicates the y-coordinate.
    
    返回:
    
    Returns the offset.
    
    从以下版本开始:
    
    7
  - getOffsetByCoordinate
```
public int getOffsetByCoordinate(int line,
                                 float coordinateX)
```
    Obtains the offset of the character that is closest to the given horizontal coordinate in a specific line.
    Note that the offset ranges from 0 to the text length, that is, the offset may be the last character index plus 1.
    
    参数:
    
    line - Indicates the line.
    
    coordinateX - Indicates the given horizontal position.
    
    返回:
    
    Returns the offset if obtained; returns -1 if the value of line is invalid.
    
    从以下版本开始:
    
    7
  - getCursorCoordinates
```
public Point getCursorCoordinates(int offset)
```
    Obtains the cursor position of a specific text offset.
    
    参数:
    
    offset - Indicates the text offset.
    
    返回:
    
    Returns the cursor position.
    
    从以下版本开始:
    
    7
  - getCursorHorizontalCoordinate
```
public float getCursorHorizontalCoordinate(int offset)
```
    Obtains the cursor's horizontal position of a specific text offset.
    
    参数:
    
    offset - Indicates the text offset.
    
    返回:
    
    Returns the cursor's horizontal position.
    
    从以下版本开始:
    
    7
  - getOffsetByMoveDirection
```
public int getOffsetByMoveDirection(int offset,
                                    TextLayout.CursorMoveDirection direction)
```
    Obtains the target cursor offset with the specified direction.
    Note that this method does not move the cursor, but only returns the offset of the cursor.
    
    参数:
    
    offset - Indicates the current cursor offset.
    
    direction - Indicates the direction of cursor movement.
    
    返回:
    
    Returns the target cursor offset.
    
    从以下版本开始:
    
    7

类 TextLayout

嵌套类概要

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

mPaint

mRichText

mText

构造器详细资料

TextLayout

TextLayout

TextLayout

方法详细资料

setText

setRichText

setPaint

setWidthLimit

setBidiStrategy

setFallbackFontMetricsEnabled

setFontPaddingStrategy

setLineBreakStrategy

setHyphenationStrategy

setJustifyStrategy

doLayout

drawText

getWidth

getWidth

getHeight

getLineCount

getLineWidth

getLineWidth

getLineIndentWidth

getLineHeight

getLineBaseline

getLineTop

getLineBottom

getLineAscent

getLineDescent

getBeginCharIndex

getEndCharIndex

getEndCharIndex

getLineIndexByCharIndex

getLineIndexByCoordinate

getLineStartPosition

getLineStartPosition

getLineLeftPosition

getLineLeftPosition

getLineEndPosition

getLineEndPosition

getLineRightPosition

getLineRightPosition

isRtlLine

isLineWithTab

getOffsetByCoordinates

getOffsetByCoordinate

getCursorCoordinates

getCursorHorizontalCoordinate

getOffsetByMoveDirection