com.xuexiang.xui.adapter.recyclerview.sticky

Class StickyItemDecoration

java.lang.Object

RecyclerView.ItemDecoration

com.xuexiang.xui.adapter.recyclerview.sticky.StickyItemDecoration

public class StickyItemDecoration
extends RecyclerView.ItemDecoration

粘性标签的实现Decoration 通过mRecyclerView.addItemDecoration()实现粘性标签

Since:

2020/5/2 4:54 PM

Author:

xuexiang

Constructor Summary

Constructors

Constructor and Description
StickyItemDecoration(StickyHeadContainer stickyHeadContainer, int stickyHeadType) 构造方法

Method Summary

Modifier and Type	Method and Description
void	enableStickyHead(boolean enableStickyHead) 开启/关闭粘性标签
void	onDraw(android.graphics.Canvas canvas, RecyclerView parent, RecyclerView.State state) 当我们调用mRecyclerView.addItemDecoration()方法添加decoration的时候，RecyclerView在绘制的时候，去会绘制decorator，即调用该类的onDraw和onDrawOver方法， 1.onDraw方法先于drawChildren 2.onDrawOver在drawChildren之后，一般我们选择复写其中一个即可。 3.getItemOffsets 可以通过outRect.set()为每个Item设置一定的偏移量，主要用于绘制Decorator。
void	recycle() 主动释放资源
StickyItemDecoration	setOnStickyChangedListener(OnStickyChangedListener onStickyChangedListener) 设置粘顶布局滚动变化监听

Methods inherited from class java.lang.Object

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

Constructor Detail

StickyItemDecoration

public StickyItemDecoration(StickyHeadContainer stickyHeadContainer,
                            int stickyHeadType)

构造方法

Parameters:

stickyHeadContainer - 粘性标签容器

stickyHeadType - 粘性标签布局类型

Method Detail

setOnStickyChangedListener

public StickyItemDecoration setOnStickyChangedListener(OnStickyChangedListener onStickyChangedListener)

设置粘顶布局滚动变化监听

Parameters:

onStickyChangedListener - 粘顶布局滚动变化监听

onDraw

public void onDraw(android.graphics.Canvas canvas,
                   RecyclerView parent,
                   RecyclerView.State state)

当我们调用mRecyclerView.addItemDecoration()方法添加decoration的时候，RecyclerView在绘制的时候，去会绘制decorator，即调用该类的onDraw和onDrawOver方法， 1.onDraw方法先于drawChildren 2.onDrawOver在drawChildren之后，一般我们选择复写其中一个即可。 3.getItemOffsets 可以通过outRect.set()为每个Item设置一定的偏移量，主要用于绘制Decorator。

enableStickyHead

public void enableStickyHead(boolean enableStickyHead)

开启/关闭粘性标签

Parameters:

enableStickyHead - 是否开启

recycle

public void recycle()

主动释放资源