com.wuyr.pathlayoutmanager

Class PathLayoutManager

java.lang.Object

RecyclerView.LayoutManager

com.wuyr.pathlayoutmanager.PathLayoutManager

public class PathLayoutManager
extends RecyclerView.LayoutManager

Created by wuyr on 18-5-21 下午11:38. GitHub: https://github.com/wuyr/PathLayoutManager

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	PathLayoutManager.OnItemSelectedListener

Field Summary

Fields

Modifier and Type	Field and Description
static int	SCROLL_MODE_LOOP 无限循环模式
static int	SCROLL_MODE_NORMAL 普通模式
static int	SCROLL_MODE_OVERFLOW 溢出模式

Constructor Summary

Constructors

Constructor and Description
PathLayoutManager(android.graphics.Path path, int itemOffset)
PathLayoutManager(android.graphics.Path path, int itemOffset, int orientation)

Method Summary

Modifier and Type	Method and Description
boolean	canScrollHorizontally()
boolean	canScrollVertically()
android.graphics.PointF	computeScrollVectorForPosition(int targetPosition)
RecyclerView.LayoutParams	generateDefaultLayoutParams()
boolean	isAutoMeasureEnabled()
void	onDetachedFromWindow(RecyclerView view, RecyclerView.Recycler recycler)
void	onItemsAdded(RecyclerView recyclerView, int positionStart, int itemCount)
void	onItemsMoved(RecyclerView recyclerView, int from, int to, int itemCount)
void	onItemsRemoved(RecyclerView recyclerView, int positionStart, int itemCount)
void	onItemsUpdated(RecyclerView recyclerView, int positionStart, int itemCount)
void	onItemsUpdated(RecyclerView recyclerView, int positionStart, int itemCount, java.lang.Object payload)
void	onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state)
void	onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec)
void	onScrollStateChanged(int state)
int	scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state)
void	scrollToPosition(int position)
int	scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state)
void	setAutoSelect(boolean isAutoSelect) 设置是否开启自动选中效果
void	setAutoSelectFraction(float position) 设置自动选中的目标落点
void	setCacheCount(int count) 设置缓存个数
void	setFixingAnimationDuration(long duration) 设置自动选中后的选中动画时长
void	setFlingEnable(boolean enable) 设置惯性滚动是否开启
void	setItemDirectionFixed(boolean isFixed) 设置Item是否保持垂直
void	setItemOffset(int itemOffset) 设置Item间距
void	setItemScaleRatio(float... ratios) 设置平滑缩放比例
void	setOnItemSelectedListener(PathLayoutManager.OnItemSelectedListener listener) 设置Item选中后的监听器
void	setOrientation(int orientation) 设置滑动方向
void	setScrollMode(int mode) 设置滚动模式
void	smoothScrollToPosition(int position) 平滑滚动到某个位置
void	smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position)
void	updatePath(android.graphics.Path path) 更新Path

Methods inherited from class java.lang.Object

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

Field Detail

SCROLL_MODE_NORMAL

public static final int SCROLL_MODE_NORMAL

普通模式

See Also:

Constant Field Values

SCROLL_MODE_OVERFLOW

public static final int SCROLL_MODE_OVERFLOW

溢出模式

See Also:

Constant Field Values

SCROLL_MODE_LOOP

public static final int SCROLL_MODE_LOOP

无限循环模式

See Also:

Constant Field Values

Constructor Detail

PathLayoutManager

public PathLayoutManager(android.graphics.Path path,
                         int itemOffset)

Parameters:

path - 目标路径

itemOffset - Item间距

PathLayoutManager

public PathLayoutManager(android.graphics.Path path,
                         int itemOffset,
                         int orientation)

Parameters:

path - 目标路径

itemOffset - Item间距

orientation - 滑动方向

Method Detail

onLayoutChildren

public void onLayoutChildren(RecyclerView.Recycler recycler,
                             RecyclerView.State state)

onMeasure

public void onMeasure(RecyclerView.Recycler recycler,
                      RecyclerView.State state,
                      int widthSpec,
                      int heightSpec)

isAutoMeasureEnabled

public boolean isAutoMeasureEnabled()

scrollHorizontallyBy

public int scrollHorizontallyBy(int dx,
                                RecyclerView.Recycler recycler,
                                RecyclerView.State state)

scrollVerticallyBy

public int scrollVerticallyBy(int dy,
                              RecyclerView.Recycler recycler,
                              RecyclerView.State state)

canScrollVertically

public boolean canScrollVertically()

canScrollHorizontally

public boolean canScrollHorizontally()

updatePath

public void updatePath(android.graphics.Path path)

更新Path

setItemOffset

public void setItemOffset(int itemOffset)

设置Item间距

Parameters:

itemOffset - Item间距

setItemDirectionFixed

public void setItemDirectionFixed(boolean isFixed)

设置Item是否保持垂直

setScrollMode

public void setScrollMode(int mode)

设置滚动模式

Parameters:

mode - SCROLL_MODE_NORMAL SCROLL_MODE_OVERFLOW SCROLL_MODE_LOOP

setOrientation

public void setOrientation(int orientation)

设置滑动方向

Parameters:

orientation - RecyclerView.HORIZONTAL RecyclerView.VERTICAL

setCacheCount

public void setCacheCount(int count)

设置缓存个数

onScrollStateChanged

public void onScrollStateChanged(int state)

scrollToPosition

public void scrollToPosition(int position)

smoothScrollToPosition

public void smoothScrollToPosition(RecyclerView recyclerView,
                                   RecyclerView.State state,
                                   int position)

smoothScrollToPosition

public void smoothScrollToPosition(int position)

平滑滚动到某个位置

Parameters:

position - 目标Item索引

setAutoSelectFraction

public void setAutoSelectFraction(float position)

设置自动选中的目标落点

Parameters:

position - 目标落点 (0~1)

setAutoSelect

public void setAutoSelect(boolean isAutoSelect)

设置是否开启自动选中效果

setItemScaleRatio

public void setItemScaleRatio(float... ratios)

设置平滑缩放比例

Parameters:

ratios - 缩放比例， 数组长度必须是双数， 偶数索引表示要缩放的比例， 奇数索引表示在路径上的位置(0~1) 奇数索引必须要递增，即越往后的数值应越大 例如： setItemScaleRatio(0.8, 0.5) 即表示在路径的50%处把Item缩放到原来的80% setItemScaleRatio(0, 0, 1, 0.5, 0, 1) 即表示在路径的起点和终点处，皆把Item缩放至原来的0%， 而在50%处把Item恢复原样

setFixingAnimationDuration

public void setFixingAnimationDuration(long duration)

设置自动选中后的选中动画时长

Parameters:

duration - 动画时长

setFlingEnable

public void setFlingEnable(boolean enable)

设置惯性滚动是否开启

setOnItemSelectedListener

public void setOnItemSelectedListener(PathLayoutManager.OnItemSelectedListener listener)

设置Item选中后的监听器

onDetachedFromWindow

public void onDetachedFromWindow(RecyclerView view,
                                 RecyclerView.Recycler recycler)

generateDefaultLayoutParams

public RecyclerView.LayoutParams generateDefaultLayoutParams()

computeScrollVectorForPosition

public android.graphics.PointF computeScrollVectorForPosition(int targetPosition)

onItemsAdded

public void onItemsAdded(RecyclerView recyclerView,
                         int positionStart,
                         int itemCount)

onItemsRemoved

public void onItemsRemoved(RecyclerView recyclerView,
                           int positionStart,
                           int itemCount)

onItemsUpdated

public void onItemsUpdated(RecyclerView recyclerView,
                           int positionStart,
                           int itemCount)

onItemsUpdated

public void onItemsUpdated(RecyclerView recyclerView,
                           int positionStart,
                           int itemCount,
                           java.lang.Object payload)

onItemsMoved

public void onItemsMoved(RecyclerView recyclerView,
                         int from,
                         int to,
                         int itemCount)