Recyclerview在滚动过程中更改项目 [英] Recyclerview Changing Items During Scroll
本文介绍了Recyclerview在滚动过程中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.当单击播放"按钮时，必须播放我的SD卡中的音频并必须进入进度栏 问题是当我向下滚动recyclerview时，更改下一行的Progressbar.意味着我可以一次在屏幕上容纳5个项目.当我滚动到第六行时，第六行搜索栏会突然改变.
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
请尝试以下操作
-
如果使用的是
ListView-请覆盖以下方法.
@Override
public int getViewTypeCount() {
return getCount();
}
@Override
public int getItemViewType(int position) {
return position;
}
如果使用的是RecyclerView-仅覆盖getItemViewType()方法.
If you are using RecyclerView - override only getItemViewType() method.
@Override
public int getItemViewType(int position) {
return position;
}
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