Android RecyclerView打造自动循环效果

概述先看效果图主要处理的地方:1、RecyclerView中Adapter的item个人可以无限轮询.2、RecyclerView自动滑动

先看效果图

主要处理的地方:
1、RecyclerVIEw中Adapter的item个人可以无限轮询.
2、RecyclerVIEw自动滑动
3、手指按下时滑动停止,手指抬起后继续自动滑动

public class AutopollRecyclerVIEw extends RecyclerVIEw { private static final long TIME_auto_PolL = 16; AutopollTask autopollTask; private boolean running; //标示是否正在自动轮询 private boolean canRun;//标示是否可以自动轮询,可在不需要的是否置false public AutopollRecyclerVIEw(Context context,@Nullable AttributeSet attrs) {  super(context,attrs);  autopollTask = new AutopollTask(this); } static class AutopollTask implements Runnable {  private final WeakReference<AutopollRecyclerVIEw> mReference;  //使用弱引用持有外部类引用->防止内存泄漏  public AutopollTask(AutopollRecyclerVIEw reference) {   this.mReference = new WeakReference<AutopollRecyclerVIEw>(reference);  }  @OverrIDe  public voID run() {   AutopollRecyclerVIEw recyclerVIEw = mReference.get();   if (recyclerVIEw != null && recyclerVIEw.running &&recyclerVIEw.canRun) {    recyclerVIEw.scrollBy(2,2);    recyclerVIEw.postDelayed(recyclerVIEw.autopollTask,recyclerVIEw.TIME_auto_PolL);   }  } } //开启:如果正在运行,先停止->再开启 public voID start() {  if (running)   stop();  canRun = true;  running = true;  postDelayed(autopollTask,TIME_auto_PolL); } public voID stop(){  running = false;  removeCallbacks(autopollTask); } @OverrIDe public boolean ontouchEvent(MotionEvent e) {  switch (e.getAction()){   case MotionEvent.ACTION_DOWN:    if (running)     stop();    break;   case MotionEvent.ACTION_UP:   case MotionEvent.ACTION_CANCEL:   case MotionEvent.ACTION_OUTSIDE:    if (canRun)     start();    break;  }  return super.ontouchEvent(e); }}

Adapter处理:主要处理getItemCount()和数据填充的onBindVIEwHolder()方法

public class AutopollAdapter extends RecyclerVIEw.Adapter<BaseVIEwHolder> { private final Context mContext; private final List<String> mData; public AutopollAdapter(Context context,List<String> List) {  this.mContext = context;  this.mData = List; } @OverrIDe public BaseVIEwHolder onCreateVIEwHolder(VIEwGroup parent,int vIEwType) {  VIEw vIEw = LayoutInflater.from(mContext).inflate(R.layout.item_auto_poll,parent,false);  BaseVIEwHolder holder = new BaseVIEwHolder(vIEw);  return holder; } @OverrIDe public voID onBindVIEwHolder(BaseVIEwHolder holder,int position) {  String data = mData.get(position%mData.size());  holder.setText(R.ID.tv_content,data); } @OverrIDe public int getItemCount() {  return Integer.MAX_VALUE; }}

最后附上Activity调用的代码

public class AutopollRecyclerActivity extends BaseActivity { @OverrIDe protected voID onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentVIEw(R.layout.activity_auto_poll);  initToolbar();  initVIEw(); } private voID initVIEw() {  AutopollRecyclerVIEw mRecyclerVIEw = (AutopollRecyclerVIEw) findVIEwByID(R.ID.rv_recycleVIEw);  List<String> List = new ArrayList<>();  for (int i = 0; i < 5; ) {   List.add(" Item: " + ++i);  }  AutopollAdapter adapter = new AutopollAdapter(this,List);  mRecyclerVIEw.setLayoutManager(new linearlayoutmanager(this,linearlayoutmanager.HORIZONTAL,false));  mRecyclerVIEw.addItemdecoration(new divIDerItemdecoration(this,divIDerItemdecoration.HORIZONTAL_List));  mRecyclerVIEw.setAdapter(adapter);  if (true) //保证itemCount的总个数宽度超过屏幕宽度->自己处理   mRecyclerVIEw.start(); }}

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