Android 当listview的listitem在屏幕上完全可见时，如何在videoview中播放和暂停视频

我已经尝试了所有的方法，但仍然不能得到确切的答案

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="400dp">
    <VideoView
        android:id="@+id/videoview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="10dp"
        android:layout_marginTop="10dp"
        android:layout_gravity="center"
        android:visibility="visible" />
</LinearLayout>
</LinearLayout>

视频播放暂停。课堂

public class VideoPlayPause extends Activity {

ListView listView;
boolean aftrpause = false;
MediaController mediacontroller;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Uri videouri1 = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.big_buck_bunny);
    Uri videouri3 = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.alien);
    Uri videouri4 = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.concept);

    ArrayList<Uri> videouri = new ArrayList<Uri>();

    videouri.add(videouri1);
    videouri.add(videouri4);
    videouri.add(videouri3);
    videouri.add(videouri1);
    videouri.add(videouri4);

    listView = (ListView) findViewById(R.id.list);

    CustomVideoAdapter adapter = new CustomVideoAdapter(this,
            R.layout.activity_listview, videouri);
    listView.setAdapter(adapter);

}

public class CustomVideoAdapter extends ArrayAdapter<Uri> {

    Context context;
    ArrayList<Uri> items;

    public CustomVideoAdapter(Context context, int resourceId, ArrayList<Uri> videouri) {
        super(context, resourceId, videouri);
        this.context = context;
        this.items = videouri;

    }
    /*private view holder class*/
    private class ViewHolder {
        VideoView videoView;
    }

    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;

        View v = convertView;

        if (v == null) {
            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
            convertView = mInflater.inflate(R.layout.activity_listview, null);
            holder = new ViewHolder();
            holder.videoView = (VideoView) convertView.findViewById(videoview);
            convertView.setTag(holder);
        } else
            holder = (ViewHolder) convertView.getTag();
        Log.i("UriSSSSSSSSSSSSSSS", "" + items.get(position));

            try {
                // Start the MediaController
                mediacontroller = new MediaController(context);
                mediacontroller.setVisibility(View.GONE);
                mediacontroller.setAnchorView(holder.videoView);
                holder.videoView.setMediaController(mediacontroller);

                Log.i("Uris out", items.get(position) + "");
                holder.videoView.setVideoURI(Uri.parse(String.valueOf(items.get(position))));

            } catch (Exception e) {
                Log.e("Error", e.getMessage());
                e.printStackTrace();
            }


        final ViewHolder finalHolder = holder;

        listView.setOnScrollListener(new AbsListView.OnScrollListener() {
            int time = 0, pausetime;
            Rect r = new Rect();
            boolean isViewVisible = finalHolder.videoView.isShown();
            View currentFocusedLayout, oldFocusedLayout;

            @Override
            public void onScrollStateChanged(AbsListView view, int scrollState) {

            }

            @Override
            public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

                int firstVisibleRow = listView.getFirstVisiblePosition();
                int lastVisibleRow = listView.getLastVisiblePosition();

                finalHolder.videoView.getGlobalVisibleRect(r);

                firstVisibleRow = listView.getFirstVisiblePosition();

                lastVisibleRow = listView.getLastVisiblePosition();

                for (int i = firstVisibleRow; i <= lastVisibleRow; i++) {
                    //Write your code here(allocation/deallocation/store in array etc.)
                    System.out.println(i + "=" + listView.getItemAtPosition(i));
                    Log.i("i Position>>>>", "" + i);
                    View listItem = listView.getChildAt(i);
                    if (listItem != null && listItem.isShown()) {
                        if (aftrpause) {
                            finalHolder.videoView.seekTo(pausetime);
                            finalHolder.videoView.start();
                        } else {
                            finalHolder.videoView.start();
                        }
                    } else {
                        pausetime = finalHolder.videoView.getCurrentPosition();
                        finalHolder.videoView.pause();
                        aftrpause = true;
                    }

                }

            }
        });
        holder.videoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                // setLooping(true) didn't work, thats why this workaround
                finalHolder.videoView.start();
            }
        });
        return convertView;
    }
  }
}

公共类视频播放暂停扩展活动{
列表视图列表视图；
布尔aftrpause=false；
媒体控制器；
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.main）；
urivideouri1=Uri.parse（“android.resource://”+getPackageName（）+“/”+R.raw.big\u buck\u bunny）；
urivideouri3=Uri.parse（“android.resource://”+getPackageName（）+“/”+R.raw.alien）；
urivideouri4=Uri.parse（“android.resource://”+getPackageName（）+“/”+R.raw.concept）；
ArrayList videouri=新的ArrayList（）；
videouri.add（videouri1）；
videouri.add（videouri4）；
videouri.add（videouri3）；
videouri.add（videouri1）；
videouri.add（videouri4）；
listView=（listView）findViewById（R.id.list）；
CustomVideoAdapter=新的CustomVideoAdapter（此，
R.layout.activity_列表视图，videouri）；
setAdapter（适配器）；
}
公共类CustomVideoAdapter扩展了ArrayAdapter{
语境；
数组列表项；
公共CustomVideoAdapter（上下文上下文、int resourceId、ArrayList videouri）{
超级（上下文、资源ID、视频URI）；
this.context=上下文；
this.items=videouri；
}
/*私有视图持有者类*/
私有类视窗持有者{
视频视图；
}
公共视图getView（最终整数位置、视图转换视图、视图组父视图）{
ViewHolder=null；
视图v=转换视图；
如果（v==null）{
LayoutInflater mInflater=（LayoutInflater）上下文
.getSystemService（活动.布局\充气机\服务）；
convertView=mInflater.inflate（R.layout.activity\u listview，null）；
holder=新的ViewHolder（）；
holder.videoView=（videoView）convertView.findViewById（videoView）；
convertView.setTag（支架）；
}否则
holder=（ViewHolder）convertView.getTag（）；
Log.i（“urissss”，“items.get（position））；
试一试{
//启动MediaController
mediacontroller=新的mediacontroller（上下文）；
mediacontroller.setVisibility（View.GONE）；
mediacontroller.setAnchorView（holder.videoView）；
holder.videoView.setMediaController（mediacontroller）；
Log.i（“Uris out”，items.get（position）+”）；
holder.videoView.setVideoURI（Uri.parse（String.valueOf（items.get（position）））；
}捕获（例外e）{
Log.e（“Error”，e.getMessage（））；
e、 printStackTrace（）；
}
最终视图持有者finalHolder=持有者；
setOnScrollListener（新的AbsListView.OnScrollListener（）{
int time=0，暂停时间；
Rect r=新的Rect（）；
布尔值isViewVisible=finalHolder.videoView.isShown（）；
查看currentFocusedLayout、oldFocusedLayout；
@凌驾
公共无效onScrollStateChanged（AbsListView视图，int scrollState）{
}
@凌驾
public void onScroll（AbsListView视图、int firstVisibleItem、int visibleItemCount、int totalItemCount）{
int firstVisibleRow=listView.getFirstVisiblePosition（）；
int lastVisibleRow=listView.getLastVisiblePosition（）；
finalHolder.videoView.getGlobalVisibleRect（r）；
firstVisibleRow=listView.getFirstVisiblePosition（）；
lastVisibleRow=listView.getLastVisiblePosition（）；
对于（int i=firstVisibleRow；i您可以使用
RecyclerView
。然后尝试使用此代码

RecyclerView rv_featureList;
    private View currentFocusedLayout, oldFocusedLayout;

    @Override
    public void onCreate(Bundle instanceState) {
        rv_featuredList.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView,
                                             int newState) {
                super.onScrollStateChanged(recyclerView, newState);


                if (newState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
                    //get the recyclerview position which is completely visible and first
                    int positionView = ((LinearLayoutManager) recyclerView.getLayoutManager()).findFirstCompletelyVisibleItemPosition();
                    Log.i("VISISBLE", positionView + "");
                    if (positionView >= 0) {
                        if (oldFocusedLayout != null) {
                            //Stop the previous video playback after new scroll

                        }
                        currentFocusedLayout = ((LinearLayoutManager) recyclerView.getLayoutManager()).findViewByPosition(positionView);

                        //play video
                        oldFocusedLayout = currentFocusedLayout;
                    }
                }

            }

        });
    }

下面是实现
尝试
listview.setOnFocusChangeListener…
在此处何处使用setOnFocusChangeListener？Devendra我尝试了你所说的，但不起作用，但仍然感谢你的回答我尝试了这个，但第一个视频没有播放，当我更改滚动状态时，应用程序崩溃。