程序包 ohos.agp.components.listcomponent

类 ListGridLayoutManager

java.lang.Object

ohos.agp.components.LayoutManager

ohos.agp.components.listcomponent.ListLayoutManager

ohos.agp.components.listcomponent.ListLinearLayoutManager

ohos.agp.components.listcomponent.ListGridLayoutManager

public class ListGridLayoutManager
extends ListLinearLayoutManager

Inherits from ListLayoutManager and implements the grid layout of the ListComponent.

从以下版本开始:

7

字段概要

字段

限定符和类型	字段	说明
static int	DEFAULT_LANE_COUNT	Indicates the default number of lanes.

从类继承的字段 ohos.agp.components.listcomponent.ListLinearLayoutManager

HORIZONTAL, INVALID_OFFSET, VERTICAL

构造器概要

构造器

构造器	说明
ListGridLayoutManager()	Default constructor used to create a ListGridLayoutManager instance.

方法概要

限定符和类型	方法	说明
protected void	createNativePtr()
int	getLaneCount()	Obtains the number of lanes in the layout.
LaneInfoHelper	getLaneInfoHelper()	Obtains the LaneInfoHelper instance that saves the lane information of each component.
boolean	isReckonScrollbarInfoWithLanes()	Checks whether the lane information is used to calculate the display information of the scroll bar.
void	setLaneCount(int laneCount)	Sets the number of lanes for the layout.
void	setLaneInfoHelper(LaneInfoHelper laneInfoHelper)	Sets a LaneInfoHelper instance to save the lane information of each component.
void	setLoadFromEnd(boolean loadFromEnd)	Sets whether to load the components from the bottom.
void	setReckonScrollbarInfoWithLanes(boolean reckonScrollbarInfoWithLanes)	Sets whether to use the lane information to calculate the display information of the scroll bar.

从类继承的方法 ohos.agp.components.listcomponent.ListLayoutManager

allowScrollHorizontally, allowScrollVertically, getOrientation, isPreloadWorkerEnabled, isScrollingSmoothly, setOrientation, setPreloadWorkerEnabled

从类继承的方法 ohos.agp.components.listcomponent.ListLinearLayoutManager

findFirstCompletelyVisibleComponentPosition, findFirstVisibleComponentPosition, findLastCompletelyVisibleChildComponentPosition, findLastVisibleChildComponentPosition, getFirstTimePreloadNum, getLayoutOrientation, getLoadFromEnd, getMaxScale, getMinScale, getReverseLayoutChild, getScaleInterpolator, isSmoothScrollbarAllowed, scrollToPositionWithDelta, setFirstTimePreloadNum, setLayoutOrientation, setMaxScale, setMinScale, setReverseLayoutChild, setScaleInterpolator, setSmoothScrollbarAllowed

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

DEFAULT_LANE_COUNT

public static final int DEFAULT_LANE_COUNT

Indicates the default number of lanes.

从以下版本开始:

7

另请参阅:

常量字段值

构造器详细资料

ListGridLayoutManager

public ListGridLayoutManager()

Default constructor used to create a ListGridLayoutManager instance.

从以下版本开始:

7

方法详细资料

createNativePtr

protected void createNativePtr()

覆盖:

createNativePtr 在类中 ListLinearLayoutManager

setLaneInfoHelper

public void setLaneInfoHelper(LaneInfoHelper laneInfoHelper)

Sets a LaneInfoHelper instance to save the lane information of each component.

参数:

laneInfoHelper - Indicates the LaneInfoHelper instance to set.

从以下版本开始:

7

setLoadFromEnd

public void setLoadFromEnd(boolean loadFromEnd)

Sets whether to load the components from the bottom.

覆盖:

setLoadFromEnd 在类中 ListLinearLayoutManager

参数:

loadFromEnd - Specifies whether to load the components from the bottom. The value true means to load them from the bottom, and false means the opposite.

从以下版本开始:

7

setLaneCount

public void setLaneCount(int laneCount)

Sets the number of lanes for the layout.

参数:

laneCount - Indicates the number of lanes to set.

从以下版本开始:

7

getLaneCount

public int getLaneCount()

Obtains the number of lanes in the layout.

返回:

Returns the number of lanes.

从以下版本开始:

7

getLaneInfoHelper

public LaneInfoHelper getLaneInfoHelper()

Obtains the LaneInfoHelper instance that saves the lane information of each component.

返回:

Returns the LaneInfoHelper instance used by this ListGridLayoutManager.

从以下版本开始:

7

setReckonScrollbarInfoWithLanes

public void setReckonScrollbarInfoWithLanes(boolean reckonScrollbarInfoWithLanes)

Sets whether to use the lane information to calculate the display information of the scroll bar. This method can increase the calculation precision of the scroll bar's height and position.

参数:

reckonScrollbarInfoWithLanes - Specifies whether to use the lane information to calculate the display information of the scroll bar. The value true means to use the lane information for calculation, and false means the opposite.

从以下版本开始:

7

isReckonScrollbarInfoWithLanes

public boolean isReckonScrollbarInfoWithLanes()

Checks whether the lane information is used to calculate the display information of the scroll bar.

返回:

Returns true if the lane information is used to calculate the display information of the scroll bar; returns false otherwise.

从以下版本开始:

7