androidのアプリをjavaでandroidstudioで作成しています。
googlemapをタップすると周辺10㎞のツイートを表示するというアプリです。
問題点
取得したツイートをListviewに表示する際、動画を表示させたいのですが
・該当のツイートではないのに動画が表示される
・動画を表示させると落ちる
・listviewを戻しても動画が再生されない。
という問題が起きます。
SurfaceView、mediaplayerを使用して動画を再生しています。
解決方法をよろしくお願い致します。
以下のコード
public class MapsSubActivity extends ListActivity {
private TweetAdapter01 mAdapter;
private Twitter mTwitter;
public SurfaceView mSurfaceView;
public SurfaceHolder mHolder;
public MediaPlayer mMediaPlayer;
public String path1 = "";
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mAdapter = new TweetAdapter01(this);
    reloadTimeLine();
    setListAdapter(mAdapter);
}


private void reloadTimeLine() {
    AsyncTask<Void, Void, List<Status>> task = new AsyncTask<Void, Void, List<twitter4j.Status>>() {



        //経度緯度の受け渡し
        Intent intent = getIntent();
        String strLat = intent.getStringExtra("strLat");//除外ワード
        String strLong = intent.getStringExtra("strLong");//アカウントを指定
        double dLat = Double.parseDouble(strLat);
        double dLong = Double.parseDouble(strLong);


        public final String API_KEY = "XXXXXXX";
        public final String API_SECRET = "XXXXXXX";
        public final String ACCESS_TOKEN = "XXXXXXX";
        public final String ACCESS_TOKEN_SECRET = "XXXXXXX";

        @Override
        protected List<twitter4j.Status> doInBackground(Void... params) {
            try {


                String strQuery = null;
                Twitter tw = new TwitterFactory().getInstance();
                tw.setOAuthConsumer(API_KEY, API_SECRET);
                AccessToken at = new AccessToken(ACCESS_TOKEN, ACCESS_TOKEN_SECRET);
                tw.setOAuthAccessToken(at);
                ArrayList<twitter4j.Status> list = new ArrayList<twitter4j.Status>();
                Query query = new Query();                  
                    query.setCount(100);
                    GeoLocation geo = new GeoLocation(dLat, dLong);
                    query.setGeoCode(geo, 10.0, Query.KILOMETERS);
                    query.setQuery(strQuery);
                    QueryResult result = tw.search(query);
                    String str = String.valueOf(result.getCount());

                    for (twitter4j.Status tweet : result.getTweets()) {
                        list.add(tweet);
                    }
                    if (result.hasNext()) {
                        query = result.nextQuery();
                    } 
                return list;
            } catch(TwitterException e){
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(List<twitter4j.Status> result) {
            if (result != null) {
                mAdapter.clear();
                for (twitter4j.Status status : result) {
                    mAdapter.add(status);
                    Log.d("testE","zoku");
                }
                getListView().setSelection(0);
            } else {
            }
        }
    };
    task.execute();
}

private class TweetAdapter01 extends ArrayAdapter<Status> {

    private LayoutInflater mInflater;

    public TweetAdapter01(Context context) {
        super(context, android.R.
                layout.simple_list_item_1);
        mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = mInflater.inflate(R.layout.list_item_searchsub, null);
        if (convertView == null) {
            convertView = mInflater.inflate(R.layout.list_item_searchsub, null);
        }

        Status item = getItem(position);
        SmartImageView icon = (SmartImageView) convertView.findViewById(R.id.icon);
        icon.setImageUrl(item.getUser().getProfileImageURL());
        Log.d("testItem",item.getUser().getProfileImageURL());
        TextView name = (TextView) convertView.findViewById(R.id.name);
        name.setText(item.getUser().getName());
        TextView screenName = (TextView) convertView.findViewById(R.id.screen_name);
        screenName.setText("@" + item.getUser().getScreenName());
        TextView text = (TextView) convertView.findViewById(R.id.text);
        text.setText(item.getText());
        mSurfaceView = (SurfaceView) findViewById(R.id.surfaceview);
        SmartImageView image1 = (SmartImageView) convertView.findViewById(R.id.image1);
        SmartImageView image2 = (SmartImageView) convertView.findViewById(R.id.image2);
        SmartImageView image3 = (SmartImageView) convertView.findViewById(R.id.image3);
        SmartImageView image4 = (SmartImageView) convertView.findViewById(R.id.image4);
        image1.setVisibility(INVISIBLE);
        image2.setVisibility(INVISIBLE);
        image3.setVisibility(INVISIBLE);
        image4.setVisibility(INVISIBLE);

        ExtendedMediaEntity[] mediaEntitys = item.getExtendedMediaEntities();


        List list = new ArrayList();
        for( int i = 0; i < mediaEntitys.length; i ++ ){
            ExtendedMediaEntity extendedMediaEntity = mediaEntitys[i];
            ExtendedMediaEntity.Variant[] variant = extendedMediaEntity.getVideoVariants();
            if (extendedMediaEntity.getType().equals("video")) {
                    list.add(variant[i].getUrl());
            }
            else{list.add(extendedMediaEntity.getMediaURLHttps());}
        }


        String[] medias = ( String[] )list.toArray( new String[0] );
        for (int i=0;i < medias.length;i++) {
            if(i==0) {
                if (medias[i].contains("video")) {

                    mSurfaceView.setVisibility(VISIBLE);
                    // Windowを透明にする
                    getWindow().setFormat(PixelFormat.TRANSPARENT);
                    // SurfaceViewにコールバックを設定
                    path1 = null;
                    path1 = medias[i];
                    mHolder = mSurfaceView.getHolder();
                    mHolder.addCallback(mCallback);

                }
                //
                else {
                    image1.setVisibility(VISIBLE);
                    image1.setImageUrl(medias[i]);
                    Log.d("test201804", medias[i]);
                }
            }
            if(i==1){
                image2.setVisibility(VISIBLE);
                image2.setImageUrl(medias[i]);
                Log.d("test201804",medias[i]);
            }
            if(i==2){
                image3.setVisibility(VISIBLE);
                image3.setImageUrl(medias[i]);
                Log.d("test201804",medias[i]);
            }
            if(i==3){
                image4.setVisibility(VISIBLE);
                image4.setImageUrl(medias[i]);
                Log.d("test201804",medias[i]);
            }

        }

        return convertView;
    }
}



private final SurfaceHolder.Callback mCallback = new SurfaceHolder.Callback() {


    /** SurfaceViewが生成された時に呼び出される */
    @Override
    public void surfaceCreated(SurfaceHolder holder) {
     //   public final String path = "ファイルパスかURL";
        try {

            // MediaPlayerを生成
            mMediaPlayer = new MediaPlayer();
            // 動画ファイルをMediaPlayerに読み込ませる
         //   Log.d("mediaplayertest",path1);

            mMediaPlayer.setDataSource(path1);
            // 読み込んだ動画ファイルを画面に表示する
            mMediaPlayer.setDisplay(holder);
            mMediaPlayer.prepare();
            mMediaPlayer.setOnPreparedListener(new MediaPlayer. OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    mMediaPlayer.start();
                }
            });
           // mMediaPlayer.start();
        } catch (IllegalArgumentException e) {
            e.printStackTrace();

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

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

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

        } finally {

        }
    }

    //
    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    /** SurfaceViewが終了した時に呼び出される */
    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        if (mMediaPlayer != null) {
            mMediaPlayer.release();
            mMediaPlayer = null;

            mSurfaceView.setVisibility(INVISIBLE);
            path1 = null;
        }
    }

};
}