ScrollingMovementMethod


public class ScrollingMovementMethod
extends BaseMovementMethod implements MovementMethod

java.lang.Object
   ↳ android.text.method.BaseMovementMethod
     ↳ android.text.method.ScrollingMovementMethod
LinkMovementMethod A movement method that traverses links in the text buffer and scrolls if necessary. 


A movement method that interprets movement keys by scrolling the text buffer.

Summary

Public constructors

ScrollingMovementMethod()

Public methods

static MovementMethod getInstance()
void onTakeFocus(TextView widget, Spannable text, int dir)
boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event)

Protected methods

boolean bottom(TextView widget, Spannable buffer)

Performs a bottom movement action.

boolean down(TextView widget, Spannable buffer)

Performs a down movement action.

boolean end(TextView widget, Spannable buffer)

Performs an end movement action.

boolean home(TextView widget, Spannable buffer)

Performs a home movement action.

boolean left(TextView widget, Spannable buffer)

Performs a left movement action.

boolean lineEnd(TextView widget, Spannable buffer)

Performs a line-end movement action.

boolean lineStart(TextView widget, Spannable buffer)

Performs a line-start movement action.

boolean pageDown(TextView widget, Spannable buffer)

Performs a page-down movement action.

boolean pageUp(TextView widget, Spannable buffer)

Performs a page-up movement action.

boolean right(TextView widget, Spannable buffer)

Performs a right movement action.

boolean top(TextView widget, Spannable buffer)

Performs a top movement action.

boolean up(TextView widget, Spannable buffer)

Performs an up movement action.

Inherited methods

boolean bottom(TextView widget, Spannable buffer)

Performs a bottom movement action.

boolean canSelectArbitrarily()

Returns true if this movement method allows arbitrary selection of any text; false if it has no selection (like a movement method that only scrolls) or a constrained selection (for example limited to links.

boolean down(TextView widget, Spannable buffer)

Performs a down movement action.

boolean end(TextView widget, Spannable buffer)

Performs an end movement action.

int getMovementMetaState(Spannable buffer, KeyEvent event)

Gets the meta state used for movement using the modifiers tracked by the text buffer as well as those present in the key event.

boolean handleMovementKey(TextView widget, Spannable buffer, int keyCode, int movementMetaState, KeyEvent event)

Performs a movement key action.

boolean home(TextView widget, Spannable buffer)

Performs a home movement action.

void initialize(TextView widget, Spannable text)
boolean left(TextView widget, Spannable buffer)

Performs a left movement action.

boolean lineEnd(TextView widget, Spannable buffer)

Performs a line-end movement action.

boolean lineStart(TextView widget, Spannable buffer)

Performs a line-start movement action.

boolean nextParagraph(TextView widget, Spannable buffer)

Performs a next paragraph movement action.

boolean onGenericMotionEvent(TextView widget, Spannable text, MotionEvent event)
boolean onKeyDown(TextView widget, Spannable text, int keyCode, KeyEvent event)
boolean onKeyOther(TextView widget, Spannable text, KeyEvent event)

If the key listener wants to other kinds of key events, return true, otherwise return false and the caller (i.e.

boolean onKeyUp(TextView widget, Spannable text, int keyCode, KeyEvent event)
void onTakeFocus(TextView widget, Spannable text, int direction)
boolean onTouchEvent(TextView widget, Spannable text, MotionEvent event)
boolean onTrackballEvent(TextView widget, Spannable text, MotionEvent event)
boolean pageDown(TextView widget, Spannable buffer)

Performs a page-down movement action.

boolean pageUp(TextView widget, Spannable buffer)

Performs a page-up movement action.

boolean previousParagraph(TextView widget, Spannable buffer)

Performs a previous paragraph movement action.

boolean right(TextView widget, Spannable buffer)

Performs a right movement action.

boolean top(TextView widget, Spannable buffer)

Performs a top movement action.

boolean up(TextView widget, Spannable buffer)

Performs an up movement action.

Object clone()

Creates and returns a copy of this object.

boolean equals(Object obj)

Indicates whether some other object is "equal to" this one.

void finalize()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.

final Class<?> getClass()

Returns the runtime class of this Object.

int hashCode()

Returns a hash code value for the object.

final void notify()

Wakes up a single thread that is waiting on this object's monitor.

final void notifyAll()

Wakes up all threads that are waiting on this object's monitor.

String toString()

Returns a string representation of the object.

final void wait(long timeoutMillis, int nanos)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait(long timeoutMillis)

Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

final void wait()

Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

abstract boolean canSelectArbitrarily()

Returns true if this movement method allows arbitrary selection of any text; false if it has no selection (like a movement method that only scrolls) or a constrained selection (for example limited to links.

abstract void initialize(TextView widget, Spannable text)
abstract boolean onGenericMotionEvent(TextView widget, Spannable text, MotionEvent event)
abstract boolean onKeyDown(TextView widget, Spannable text, int keyCode, KeyEvent event)
abstract boolean onKeyOther(TextView view, Spannable text, KeyEvent event)

If the key listener wants to other kinds of key events, return true, otherwise return false and the caller (i.e.

abstract boolean onKeyUp(TextView widget, Spannable text, int keyCode, KeyEvent event)
abstract void onTakeFocus(TextView widget, Spannable text, int direction)
abstract boolean onTouchEvent(TextView widget, Spannable text, MotionEvent event)
abstract boolean onTrackballEvent(TextView widget, Spannable text, MotionEvent event)

Public constructors

ScrollingMovementMethod

public ScrollingMovementMethod ()

Public methods

getInstance

Added in API level 1
public static MovementMethod getInstance ()

Returns
MovementMethod

onTakeFocus

Added in API level 1
public void onTakeFocus (TextView widget, 
                Spannable text, 
                int dir)

Parameters
widget TextView

text Spannable

dir int

onTouchEvent

Added in API level 1
public boolean onTouchEvent (TextView widget, 
                Spannable buffer, 
                MotionEvent event)

Parameters
widget TextView

buffer Spannable

event MotionEvent

Returns
boolean

Protected methods

bottom

Added in API level 11
protected boolean bottom (TextView widget, 
                Spannable buffer)

Performs a bottom movement action. Moves the cursor or scrolls to the bottom of the buffer.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

down

Added in API level 1
protected boolean down (TextView widget, 
                Spannable buffer)

Performs a down movement action. Moves the cursor or scrolls down by one line.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

end

Added in API level 11
protected boolean end (TextView widget, 
                Spannable buffer)

Performs an end movement action. Moves the cursor or scrolls to the start of the line or to the top of the document depending on whether the insertion point is being moved or the document is being scrolled.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

home

Added in API level 11
protected boolean home (TextView widget, 
                Spannable buffer)

Performs a home movement action. Moves the cursor or scrolls to the start of the line or to the top of the document depending on whether the insertion point is being moved or the document is being scrolled.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

left

Added in API level 1
protected boolean left (TextView widget, 
                Spannable buffer)

Performs a left movement action. Moves the cursor or scrolls left by one character.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

lineEnd

Added in API level 11
protected boolean lineEnd (TextView widget, 
                Spannable buffer)

Performs a line-end movement action. Moves the cursor or scrolls to the end of the line.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

lineStart

Added in API level 11
protected boolean lineStart (TextView widget, 
                Spannable buffer)

Performs a line-start movement action. Moves the cursor or scrolls to the start of the line.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

pageDown

Added in API level 11
protected boolean pageDown (TextView widget, 
                Spannable buffer)

Performs a page-down movement action. Moves the cursor or scrolls down by one page.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

pageUp

Added in API level 11
protected boolean pageUp (TextView widget, 
                Spannable buffer)

Performs a page-up movement action. Moves the cursor or scrolls up by one page.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

right

Added in API level 1
protected boolean right (TextView widget, 
                Spannable buffer)

Performs a right movement action. Moves the cursor or scrolls right by one character.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

top

Added in API level 11
protected boolean top (TextView widget, 
                Spannable buffer)

Performs a top movement action. Moves the cursor or scrolls to the top of the buffer.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.

up

Added in API level 1
protected boolean up (TextView widget, 
                Spannable buffer)

Performs an up movement action. Moves the cursor or scrolls up by one line.

Parameters
widget TextView: The text view.

buffer Spannable: The text buffer.

Returns
boolean True if the event was handled.