MovementMethod

Kotlin |Java

public interface MovementMethod

android.text.method.MovementMethod

Known indirect subclasses

ArrowKeyMovementMethod, BaseMovementMethod, LinkMovementMethod, ScrollingMovementMethod

ArrowKeyMovementMethod	A movement method that provides cursor movement and selection.
BaseMovementMethod	Base classes for movement methods.
LinkMovementMethod	A movement method that traverses links in the text buffer and scrolls if necessary.
ScrollingMovementMethod	A movement method that interprets movement keys by scrolling the text buffer.

Provides cursor positioning, scrolling and text selection functionality in a TextView.

The TextView delegates handling of key events, trackball motions and touches to the movement method for purposes of content navigation. The framework automatically selects an appropriate movement method based on the content of the TextView.

This interface is intended for use by the framework; it should not be implemented directly by applications.

Summary

Public methods
`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 methods

canSelectArbitrarily

Added in API level 1

public 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. The "Select All" menu item is disabled if arbitrary selection is not allowed.

Returns
`boolean`

Added in API level 1

public abstract void initialize (TextView widget, 
                Spannable text)

Parameters
`widget`	`TextView`
`text`	`Spannable`

Added in API level 12

public abstract boolean onGenericMotionEvent (TextView widget, 
                Spannable text, 
                MotionEvent event)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`event`	`MotionEvent`

Returns
`boolean`

Added in API level 1

public abstract boolean onKeyDown (TextView widget, 
                Spannable text, 
                int keyCode, 
                KeyEvent event)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`keyCode`	`int`
`event`	`KeyEvent`

Returns
`boolean`

Added in API level 3

public 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. the widget host) will handle the key.

Parameters
`view`	`TextView`
`text`	`Spannable`
`event`	`KeyEvent`

Returns
`boolean`

Added in API level 1

public abstract boolean onKeyUp (TextView widget, 
                Spannable text, 
                int keyCode, 
                KeyEvent event)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`keyCode`	`int`
`event`	`KeyEvent`

Returns
`boolean`

Added in API level 1

public abstract void onTakeFocus (TextView widget, 
                Spannable text, 
                int direction)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`direction`	`int`

Added in API level 1

public abstract boolean onTouchEvent (TextView widget, 
                Spannable text, 
                MotionEvent event)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`event`	`MotionEvent`

Returns
`boolean`

Added in API level 1

public abstract boolean onTrackballEvent (TextView widget, 
                Spannable text, 
                MotionEvent event)

Parameters
`widget`	`TextView`
`text`	`Spannable`
`event`	`MotionEvent`

Returns
`boolean`