Android实现自动轮询的RecycleView

概述Android实现自动轮询的RecycleView 需求:类似医院或者商场,大屏幕无限轮播item (广告词/广告图-),供大家参考,具体内容如下 代码如下 /** * Created by Xia_焱 on 2017/8/20. */ public class AutoPollRecyclerView extends RecyclerView { private static final long TIME_AUTO_POLL = 32; AutoPollTask autoPollTask; private boolean running; /

需求：类似医院或者商场，大屏幕无限轮播item (广告词/广告图…)，供大家参考，具体内容如下

代码如下

/** * Created by Xia_焱 on 2017/8/20. */public class AutopollRecyclerVIEw extends RecyclerVIEw { private static final long TIME_auto_PolL = 32; 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); }}

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中的代码如下

@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; }

Activity中的代码

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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