com.zhouyou.recyclerview.listener

类 ItemDragListener

java.lang.Object

ItemTouchHelper.Callback

com.zhouyou.recyclerview.listener.ItemDragListener

public class ItemDragListener
extends ItemTouchHelper.Callback

描述：item拖动条监听回调

作者： zhouyou
日期： 2016/11/1 14:29
版本： v1.0

构造器概要

构造器

构造器和说明
ItemDragListener(HelperRecyclerViewDragAdapter adapter)

方法概要

限定符和类型	方法和说明
void	clearView(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)
int	getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder)
float	getMoveThreshold(RecyclerView.ViewHolder viewHolder)
float	getSwipeThreshold(RecyclerView.ViewHolder viewHolder)
boolean	isItemViewSwipeEnabled()
boolean	isLongPressDragEnabled()
boolean	onMove(RecyclerView recyclerView, RecyclerView.ViewHolder source, RecyclerView.ViewHolder target)
void	onMoved(RecyclerView recyclerView, RecyclerView.ViewHolder source, int fromPos, RecyclerView.ViewHolder target, int toPos, int x, int y)
void	onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState)
void	onSwiped(RecyclerView.ViewHolder viewHolder, int direction)
void	setDragMoveFlags(int dragMoveFlags) Set the drag movement direction.
void	setMoveThreshold(float moveThreshold) Set the fraction that the user should move the View to be considered as it is dragged.
void	setSwipeMoveFlags(int swipeMoveFlags) Set the swipe movement direction.
void	setSwipeThreshold(float swipeThreshold) Set the fraction that the user should move the View to be considered as swiped.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ItemDragListener

public ItemDragListener(HelperRecyclerViewDragAdapter adapter)

方法详细资料

isLongPressDragEnabled

public boolean isLongPressDragEnabled()

isItemViewSwipeEnabled

public boolean isItemViewSwipeEnabled()

onSelectedChanged

public void onSelectedChanged(RecyclerView.ViewHolder viewHolder,
                              int actionState)

clearView

public void clearView(RecyclerView recyclerView,
                      RecyclerView.ViewHolder viewHolder)

getMovementFlags

public int getMovementFlags(RecyclerView recyclerView,
                            RecyclerView.ViewHolder viewHolder)

onMove

public boolean onMove(RecyclerView recyclerView,
                      RecyclerView.ViewHolder source,
                      RecyclerView.ViewHolder target)

onMoved

public void onMoved(RecyclerView recyclerView,
                    RecyclerView.ViewHolder source,
                    int fromPos,
                    RecyclerView.ViewHolder target,
                    int toPos,
                    int x,
                    int y)

onSwiped

public void onSwiped(RecyclerView.ViewHolder viewHolder,
                     int direction)

getMoveThreshold

public float getMoveThreshold(RecyclerView.ViewHolder viewHolder)

getSwipeThreshold

public float getSwipeThreshold(RecyclerView.ViewHolder viewHolder)

setSwipeThreshold

public void setSwipeThreshold(float swipeThreshold)

Set the fraction that the user should move the View to be considered as swiped. The fraction is calculated with respect to RecyclerView's bounds.

Default value is .5f, which means, to swipe a View, user must move the View at least half of RecyclerView's width or height, depending on the swipe direction.

参数:

swipeThreshold - A float value that denotes the fraction of the View size. Default value is .8f .

setMoveThreshold

public void setMoveThreshold(float moveThreshold)

Set the fraction that the user should move the View to be considered as it is dragged. After a view is moved this amount, ItemTouchHelper starts checking for Views below it for a possible drop.

参数:

moveThreshold - A float value that denotes the fraction of the View size. Default value is .1f .

setDragMoveFlags

public void setDragMoveFlags(int dragMoveFlags)

Set the drag movement direction.

The value should be ItemTouchHelper.UP, ItemTouchHelper.DOWN, ItemTouchHelper.LEFT, ItemTouchHelper.RIGHT or their combination.

You can combine them like ItemTouchHelper.UP | ItemTouchHelper.DOWN, it means that the item could only move up and down when dragged.

参数:

dragMoveFlags - the drag movement direction. Default value is ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT.

setSwipeMoveFlags

public void setSwipeMoveFlags(int swipeMoveFlags)

Set the swipe movement direction.

The value should be ItemTouchHelper.START, ItemTouchHelper.END or their combination.

You can combine them like ItemTouchHelper.START | ItemTouchHelper.END, it means that the item could swipe to both left or right.

参数:

swipeMoveFlags - the swipe movement direction. Default value is ItemTouchHelper.END.