程序包 ohos.agp.components

类 DragEvent

java.lang.Object

ohos.agp.components.DragEvent

public class DragEvent
extends Object

Defines attributes for drag events.

Drag events are generated at various times during a drag and drop operation, that is, a user holds down an object and then drags it to another location.

从以下版本开始:

1

字段概要

字段

限定符和类型	字段	说明
static int	DRAG_BEGIN	Indicates the start of a drag and drop operation.
static int	DRAG_DROP	Indicates that a drag event is finished.
static int	DRAG_FINISH	Indicates that the object is deleted.
static int	DRAG_IN	Indicates that the drag point has entered the area of the drop target.
static int	DRAG_MOVE	Indicates that an object is being moved during a drag and drop operation.
static int	DRAG_OUT	Indicates that the dragged object is moved out of the drop target.

方法概要

限定符和类型	方法	说明
int	getAction()	Obtains action.
MimeData	getClipData()	已过时。 This change is effective since API version 5. Replaced by getMimeData()
MimeData	getMimeData()	Obtains the MimeData of a drag event.
float	getX()	Obtains the X coordinate of the drag point.
float	getY()	Obtains the Y coordinate of the drag point.
boolean	isBroadcast()	Determines whether a drag event is being broadcasted.
static DragEvent	obtain(int action, float x, float y, MimeData mimeData)	A constructor used to create a new DragEvent instance.

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

DRAG_BEGIN

public static final int DRAG_BEGIN

Indicates the start of a drag and drop operation.

另请参阅:

常量字段值

DRAG_DROP

public static final int DRAG_DROP

Indicates that a drag event is finished.

从以下版本开始:

3

另请参阅:

常量字段值

DRAG_FINISH

public static final int DRAG_FINISH

Indicates that the object is deleted.

从以下版本开始:

3

另请参阅:

常量字段值

DRAG_IN

public static final int DRAG_IN

Indicates that the drag point has entered the area of the drop target.

另请参阅:

常量字段值

DRAG_MOVE

public static final int DRAG_MOVE

Indicates that an object is being moved during a drag and drop operation.

另请参阅:

常量字段值

DRAG_OUT

public static final int DRAG_OUT

Indicates that the dragged object is moved out of the drop target.

另请参阅:

常量字段值

方法详细资料

obtain

public static DragEvent obtain(int action,
                               float x,
                               float y,
                               MimeData mimeData)

A constructor used to create a new DragEvent instance.

参数:

action - Indicates the action ID.

x - Indicates the X coordinate of the drag point.

y - Indicates the Y coordinate of the drag point.

mimeData - The MimeData of draggable component.

返回:

Returns the created DragEvent instance.

getAction

public final int getAction()

Obtains action.

This method obtains the action ID of an event.

返回:

Returns the action ID of an event.

getX

public final float getX()

Obtains the X coordinate of the drag point.

返回:

Returns the X coordinate of the drag point.

getY

public final float getY()

Obtains the Y coordinate of the drag point.

返回:

Returns the Y coordinate of the drag point.

getClipData

@Deprecated
public final MimeData getClipData()

已过时。 This change is effective since API version 5. Replaced by getMimeData()

Obtains the MimeData of a drag event.

返回:

Returns the MimeData of the drag event.

getMimeData

public final MimeData getMimeData()

Obtains the MimeData of a drag event.

返回:

Returns the MimeData of the drag event.

从以下版本开始:

4

isBroadcast

public boolean isBroadcast()

Determines whether a drag event is being broadcasted.

A drag event is considered being broadcasted if any of the following actions occur: DRAG_BEGIN, DRAG_MOVE, and DRAG_FINISH.

返回:

Returns true if the drag event is being broadcasted; returns false otherwise.