textureView和mediaplayer的一个类似微视首页的视频列表问题

public void onScrollStateChanged(AbsListView view, int scrollState) {

			// TODO Auto-generated method stub

			 View firstItem = views.get(Integer

                     .valueOf(firstVisibleIndex));

			 View firstItem1 = views.get(Integer

                     .valueOf(firstVisibleIndex)+1);

	          if (scrollState == SCROLL_STATE_IDLE) {

                 

                  if (firstItem != null) {

                          int[] location = new int[2];

                          firstItem.getLocationOnScreen(location);

                          int x = location[0];

                          int y = location[1];

                          System.out.println("====== x: " + x + "  y:" + y);

                         com.weishi.view.VideoPlayTextureView	textureView = (VideoPlayTextureView) firstItem.findViewById(R.id.videoview);

                  		 ProgressBar loading=(ProgressBar) firstItem.findViewById(R.id.loading);

                   		ImageView video=(ImageView) firstItem.findViewById(R.id.video_cover_default);

                   		ImageView videoPlay=(ImageView) firstItem.findViewById(R.id.play_controller);

                   		if (textureView.isAvailable()) {

             	               	    textureView.prepare(list.get(3));//后续处理，标记

             	               		loading.setVisibility(View.GONE);

             	               		Log.e("position2", "______________+++++++"+Integer.valueOf(firstVisibleIndex));

             	  	        		video.setVisibility(View.GONE);

             	  	        		if (textureView.getMediaState()==MediaState.PLAY) {

             							

             						}else {

             							textureView.play();

             							

             						}

             	  	        		}

textureView.setSurfaceTextureListener(new SurfaceTextureListener() {

							

							@Override

							public void onSurfaceTextureUpdated(SurfaceTexture surface) {

								// TODO Auto-generated method stub

								

							}

							

							@Override

							public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width,

									int height) {

								// TODO Auto-generated method stub

								

							}

							

							@Override

							public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {

								// TODO Auto-generated method stub

								return false;

							}

							

							@Override

							public void onSurfaceTextureAvailable(SurfaceTexture surface, int width,

									int height) {

								// TODO Auto-generated method stub

						             textureView.prepare(list.get(3));

						             textureView.play();;

							}

						});

	if (textureView.isAvailable()) {

				textureView.prepare(getPath(FileName));

				loading.setVisibility(View.GONE);

				video.setVisibility(View.GONE);

				textureView.getMediaPlayer().setOnPreparedListener(new OnPreparedListener() {

					@Override

					public void onPrepared(MediaPlayer mp) {

							Log.e("加入的mediaplayer","位置" + 0 + "mediaplayer"+ textureView.getMediaPlayer());

							textureView.play();

							videoPlay.setVisibility(View.GONE);

						}

					});