Recyclerview 在滚动期间更改项目

本文介绍了Recyclerview 在滚动期间更改项目的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个 RecyclerView.每行都有一个播放按钮、textview 和 Progressbar.单击播放按钮时，必须从我的 sdcard 播放音频，并且必须进行 Progressbar问题是当我向下滚动 recyclerview 时更改下一行的进度条.意味着我可以一次在屏幕上放置 5 个项目.当我滚动到第 6 行时，第 6 行搜索栏突然发生变化.

I have a RecyclerView. Each row has a play button, textview and Progressbar. when click on the play button have to play audio from my sdcard and have to progress Progressbar The problem is when i scroll down the recyclerview change the Progressbar in next row.means I can fit 5 items on the screen at once. When I scroll to the 6th, 6th row seekbar changes suddenly.

public class ListAdapter extends RecyclerView.Adapter { private List<Historyitem> stethitems; public Context mContext; public Activity activity; public Handler mHandler; static MediaPlayer mPlayer; static Timer mTimer; public ListAdapter(Activity activity,Context mContext,List<Historyitem> stethitems) { this.stethitems = stethitems; this.mContext = mContext; this.activity = activity; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) { View rootView = LayoutInflater. from(mContext).inflate(R.layout.stethoscopeadapteritem, null, false); RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); rootView.setLayoutParams(lp); mHandler = new Handler(); return new MyViewHolder(rootView); } @Override public void onBindViewHolder(final RecyclerView.ViewHolder viewHolder, int position) { final Historyitem dataItem = stethitems.get(position); final MyViewHolder myViewHolder = (MyViewHolder) viewHolder; myViewHolder.progressplay.setProgress(0); myViewHolder.stethdatetime.setText(dataItem.getReported_Time()); myViewHolder.stethhosname.setText(dataItem.getdiv()); if(dataItem.getPatient_Attribute().replaceAll(" ","").equals("")){ myViewHolder.stethdoctorname.setText(dataItem.getunit()); } else { myViewHolder.stethdoctorname.setText(dataItem.getPatient_Attribute()); } myViewHolder.stethstreamplay.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { FileDownload(dataItem.getmsg(), myViewHolder.progressplay); } }); } @Override public int getItemCount() { return stethitems.size(); } public class MyViewHolder extends RecyclerView.ViewHolder { final CustomTextRegular stethdatetime; final CustomTextView stethhosname; final CustomTextBold stethdoctorname; final ImageButton stethstreamplay; final NumberProgressBar progressplay; public MyViewHolder(View itemView) { super(itemView); stethdatetime = (CustomTextRegular) itemView.findViewById(R.id.stethdatetime); stethhosname = (CustomTextView) itemView.findViewById(R.id.stethhosname); stethdoctorname = (CustomTextBold) itemView.findViewById(R.id.stethdoctorname); stethstreamplay = (ImageButton) itemView.findViewById(R.id.stethstreamplay); progressplay= (NumberProgressBar) itemView.findViewById(R.id.progressplay); } } public void FileDownload(final String downloadpath, final NumberProgressBar progressplay) { new AsyncTask<NumberProgressBar, Integer, NumberProgressBar>() { NumberProgressBar progress; @Override protected void onPreExecute() { super.onPreExecute(); try { if(mPlayer!=null){ mPlayer.stop(); } }catch (Exception e){ } try { if(mTimer != null){ mTimer.purge(); mTimer.cancel(); } }catch (Exception e){ } } @Override protected NumberProgressBar doInBackground(NumberProgressBar... params) { int count; progress = progressplay; try { final List<NameValuePair> list = new ArrayList<NameValuePair>(); list.add(new BasicNameValuePair("pid",id)); URL url = new URL(Config.requestfiledownload + "?path=" + downloadpath); URLConnection connection = url.openConnection(); connection.connect(); int lenghtOfFile = connection.getContentLength(); // download the file InputStream input = new BufferedInputStream(url.openStream()); OutputStream output = new FileOutputStream(Environment.getExternalStorageDirectory() + "record.wav"); byte data[] = new byte[1024]; long total = 0; while ((count = input.read(data)) != -1) { total += count; // publishing the progress.... publishProgress((int) (total * 100 / lenghtOfFile)); output.write(data, 0, count); } output.flush(); output.close(); input.close(); } catch (Exception e) { } return progress; } @Override protected void onPostExecute(final NumberProgressBar numberProgressBar) { super.onPostExecute(numberProgressBar); try { StartMediaPlayer(numberProgressBar); } catch (Exception e){ e.printStackTrace(); } } }.execute(); } public void StartMediaPlayer(final NumberProgressBar progressbar){ Uri playuri = Uri.parse("file:///sdcard/record.wav"); mPlayer = new MediaPlayer(); mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mPlayer.reset(); try { mPlayer.setDataSource(mContext, playuri); } catch (IllegalArgumentException e) { } catch (SecurityException e) { } catch (IllegalStateException e) { } catch (Exception e) { } try { mPlayer.prepare(); } catch (Exception e) { } mPlayer.start(); progressbar.setMax(mPlayer.getDuration()); mPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { if(mPlayer!=null) { mPlayer.release(); progressbar.setProgress(0); } if(mTimer != null){ mTimer.purge(); mTimer.cancel(); } } }); mTimer = new Timer(); mTimer.schedule(new TimerTask() { @Override public void run() { mHandler.post(new Runnable() { @Override public void run() { progressbar.setProgress(mPlayer.getCurrentPosition()); } }); } },0,500); }}

推荐答案

请试试这个

如果您使用 ListView - 覆盖以下方法. @Override public int getViewTypeCount() { return getCount(); } @Override public int getItemViewType(int position) { return position; }

如果您使用 RecyclerView - 仅覆盖 getItemViewType() 方法.

If you are using RecyclerView - override only getItemViewType() method.

@Override public int getItemViewType(int position) { return position; }