ListVideo视频播放列表

<ListView
    android:layout_width="match_parent"
    android:id="@+id/lv"
    android:layout_height="match_parent"></ListView>

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <SurfaceView
        android:id="@+id/surface_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"/>

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"/>
</FrameLayout>

<TextView
    android:id="@+id/content"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>    

public class MyAdapter extends BaseAdapter {
    private List<VideoItem> list;
    private Context context;
    private LayoutInflater inflater;
    private MediaPlayer player;
    //当前播放item的position，-1表示没有任何item在播放
    private int currentPlayPosition = -1;
    private int prePosition = -1;

    public MyAdapter(Context context, List<VideoItem> list) {
        this.context = context;
        this.list = list;
        inflater = LayoutInflater.from(context);
        player = new MediaPlayer();
        player.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            //异步准备完成时调用start方法开始播放
            @Override
            public void onPrepared(MediaPlayer mp) {
                mp.start();
            }
        });
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ListView listView = (ListView) parent;
        int firstVisiblePosition = listView.getFirstVisiblePosition();
        if (prePosition != firstVisiblePosition) {
            if (prePosition == currentPlayPosition) {
                player.stop();
                currentPlayPosition = -1;
            }
            prePosition = firstVisiblePosition;
        }
        Log.d("google_lenve_fb", "getView: position:" + position);
        ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.listview_item, null);
            holder = new ViewHolder();
            holder.content = (TextView) convertView.findViewById(R.id.content);
            holder.cover = (ImageView) convertView.findViewById(R.id.iv);
            holder.surfaceView = (SurfaceView) convertView.findViewById(R.id.surface_view);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        VideoItem videoItem = list.get(position);
        holder.content.setText(videoItem.getContent());
        //加载缩略图
        Picasso.with(context).load(videoItem.getCover()).placeholder(R.mipmap.ic_launcher).into(holder.cover);
        //重新设置图片和SurfaceView的宽和高
        ViewGroup.LayoutParams lp = holder.surfaceView.getLayoutParams();
        lp.width = videoItem.getWidth();
        lp.height = videoItem.getHeight();
        holder.surfaceView.setLayoutParams(lp);
        holder.cover.setLayoutParams(lp);
        /*************处理播放****************/
//        //获取每张图片所存在
//        Object tag = holder.cover.getTag();
//        //当tag不为空时，说明该item是被回收的item，而不是第一屏的item
//        if (tag != null) {
//            Integer tag1 = (Integer) tag;
//            //当item被移出屏幕时，停止播放
//            if (tag1 == currentPlayPosition && tag1 != position) {
//                player.stop();
//                currentPlayPosition = -1;
//            }
//        }

        //将当前item的position保存为图片的tag
        holder.cover.setTag(position);
        String p360 = videoItem.getP360();

        //判断当前播放的item是不是即将要显示的item
        if (currentPlayPosition == position) {
            holder.cover.setVisibility(View.INVISIBLE);
            holder.surfaceView.setVisibility(View.VISIBLE);
            //重置MediaPlayer
            player.reset();
            //设置显示视频需要的SurfaceHolder
            player.setDisplay(holder.surfaceView.getHolder());
            try {
                //设置数据源
                player.setDataSource(context, Uri.parse(p360));
                //异步准备
                player.prepareAsync();
            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            holder.surfaceView.setVisibility(View.INVISIBLE);
            holder.cover.setVisibility(View.VISIBLE);
        }

        holder.cover.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                v.setVisibility(View.INVISIBLE);
                //获得当前ImageView中携带的tag，由该tag可以获得要播放第几个item
                Integer tag = (Integer) v.getTag();
                //当点击ImageView时，如果已经有item在播放，则先停止播放
                if (player != null && player.isPlaying()) {
                    player.stop();
                }
                currentPlayPosition = tag;
                //刷新列表,重新刷新列表会调用getView方法
                notifyDataSetChanged();
            }
        });

        return convertView;
    }

    public void stop() {
        //停止播放并释放资源
        if (player != null) {
            player.stop();
            player.release();
        }
    }

    class ViewHolder {
        SurfaceView surfaceView;
        ImageView cover;
        TextView content;
    }
}

public class MainActivity extends AppCompatActivity {

    private List<VideoItem> list;
    private MyAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView listView = (ListView) findViewById(R.id.lv);
        initData();
        adapter = new MyAdapter(this, list);
        listView.setAdapter(adapter);
    }

    private void initData() {
        String jsonStr = getJsonString();
        parseJson(jsonStr);
    }

    private void parseJson(String jsonStr) {
        list = new ArrayList<>();
        try {
            JSONObject jo = new JSONObject(jsonStr);
            JSONObject data = jo.getJSONObject("data");
            JSONArray dataArr = data.getJSONArray("data");
            for (int i = 0; i < dataArr.length(); i++) {
                JSONObject item = dataArr.getJSONObject(i);
                String p360_video = null;
                int video_height = 0;
                int video_width = 0;
                String cover = null;
                String content = null;
                try {
                    JSONObject group = item.getJSONObject("group");
                    p360_video = group.getJSONObject("360p_video").getJSONArray("url_list").getJSONObject(0).getString("url");
                    video_height = group.getInt("video_height");
                    video_width = group.getInt("video_width");
                    cover = group.getJSONObject("medium_cover").getJSONArray("url_list").getJSONObject(0).getString("url");
                    content = group.getString("content");
                    VideoItem videoItem = new VideoItem(content, cover, video_height, p360_video, video_width);
                    list.add(videoItem);
                } catch (JSONException e) {
//                    e.printStackTrace();
                    //在这里处理异常数据...

                }
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }

    private String getJsonString() {
        InputStream is = null;
        StringBuffer result = new StringBuffer();
        try {
            is = getAssets().open("video1.json");
            int len = 0;
            byte[] buf = new byte[1024];
            while ((len = is.read(buf)) != -1) {
                result.append(new String(buf, 0, len));
            }
            return result.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (is != null) {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    @Override
    protected void onStop() {
        super.onStop();
        adapter.stop();
    }
}