在我的android项目中，我正在使用RecyclerView。在运行时我需要向它添加文件，以便它将这些文件上传到我的服务器。并且每个项目上都会有一个ProgressBar来显示上传进度。我的问题是每当我想要一次上传更多文件时，一个项目的进度显示在另一个项目上。这只发生在当前正在运行的上传中，因为我隐藏了完成的ProgressBar。每当我上下滚动时，它也会发生。我试图在hashMap中存储上传进度，并在项目出现时检索它，但它不起作用。我知道这是RecyclerView与listview相比的自然行为。我想知道如何实现这一目标。我用s3来上传文件。如果文件是图像，则滑动显示文件的缩略图。
CODE：
@Override
public void onBindChildViewHolder(final MyChildViewHolder holder, final int groupPosition, final int childPosition, int viewType) {
final MyChildItem child = Items.get(groupPosition).children.get(childPosition);
Context ctx = holder.imageView.getContext();
final String status = Smap.get(child.fileInfo.unique_id);
Log.d("STATUS", status);
switch (status) {
case Constants.UNKNOWN:
case Constants.RESUMED_WAITING:
case Constants.PAUSED:
case Constants.FAILED:
case Constants.CANCELED:
holder.upload_cancel.setVisibility(View.VISIBLE);
holder.resume_pause_select.setVisibility(View.VISIBLE);
holder.resume_pause_select.setImageResource(R.drawable.ic_action_ic_refresh_white_24dp);
holder.fileprogressbar.setVisibility(View.INVISIBLE);
holder.file_name.setVisibility(View.INVISIBLE);
break;
case Constants.PENDING_CANCEL:
case Constants.PENDING_NETWORK_DISCONNECT:
case Constants.PART_COMPLETED:
case Constants.PENDING_PAUSE:
case Constants.WAITING_FOR_NETWORK:
case Constants.IN_PROGRESS:
case Constants.WAITING:
holder.upload_cancel.setVisibility(View.VISIBLE);
holder.fileprogressbar.setIndeterminate(true);
holder.resume_pause_select.setVisibility(View.VISIBLE);
holder.resume_pause_select.setImageResource(R.drawable.ic_action_ic_pause_white_24dp);
holder.fileprogressbar.setVisibility(View.VISIBLE);
holder.file_name.setVisibility(View.INVISIBLE);
try {
file file = new file(null, child.fileInfo.unique_id, child.fileInfo.localpath, child.fileInfo.remotepath, status, child.fileInfo.privacy, child.fileInfo.file_size, "UPLOAD", Umap.get(child.fileInfo.unique_id), child.fileInfo.pond_id, Constants.getLastTimeOpened());
fileDao.insert(file);
Log.d("new file", "Inserted");
} catch (SQLException e) {
Log.d("ERROR", "Not Inserted");
}
Integer prevprogress = Pmap.get(child.fileInfo.unique_id);
if(prevprogress!=null){
holder.fileprogressbar.setIndeterminate(false);
holder.fileprogressbar.setProgress(prevprogress);
}
transferObserver = Util.getTransferUtility(getContext()).getTransferById(Integer.parseInt(Umap.get(child.fileInfo.unique_id)));
if (transferObserver != null) {
transferObserver.setTransferListener(new TransferListener() {
@Override
public void onStateChanged(int i, TransferState transferState) {
if (child.fileInfo.unique_id != null && !child.fileInfo.unique_id.isEmpty()) {
Umap.put(child.fileInfo.unique_id, String.valueOf(i));
Smap.put(child.fileInfo.unique_id, transferState.toString());
}
holder.fileprogressbar.setIndeterminate(true);
if (transferState.toString().equals(Constants.COMPLETED)) {
com.ficean.android.ficean.File.File.fileStore(getContext(), phonenumber, "UPLOAD", child.fileInfo, new com.ficean.android.ficean.File.File.Call() {
@Override
public void onSuccess(boolean result) {
if (result) {
}
}
});
}
List<file> files = fileDao.queryBuilder().where(com.ficean.android.ficean.db.fileDao.Properties.File_unique_id.eq(child.fileInfo.unique_id)).limit(1).build().list();
for (file file : files) {
file.setFile_status(transferState.toString());
file.setU_id(String.valueOf(i));
fileDao.update(file);
}
expMgr.notifyChildItemChanged(groupPosition,childPosition);
}
@Override
public void onProgressChanged(int i, long l, long l1) {
int value = Constants.percentage(l, l1);
holder.fileprogressbar.setIndeterminate(false);
holder.fileprogressbar.setProgress(value);
Pmap.put(child.fileInfo.unique_id,value);
}
@Override
public void onError(int i, Exception e) {
}
});
}
break;
default:
String link = SaveUtil.getEncryptedPreferences(getContext()).getString(child.fileInfo.unique_id, Constants.NOTHING);
Glide.with(getContext()).load(link).skipMemoryCache(true).diskCacheStrategy(DiskCacheStrategy.SOURCE).crossFade().placeholder(R.drawable.image_icon).listener(new CustomRequestListener(new CustomRequestListener.requestCallBack() {
@Override
public void onSuccess(boolean isSuccess) {
if (!isSuccess) {
String remotePath;
if (Opener.isFileVideo(child.fileInfo.localpath)) {
remotePath = phonenumber.concat("/").concat("thumbnails").concat("/").concat(FilenameUtils.removeExtension(new File(child.fileInfo.localpath).getName())).concat(".png");
} else {
remotePath = child.fileInfo.remotepath;
}
LoginCredentials.getSignedUrl(getContext(), remotePath, new LoginCredentials.UrlCallback() {
@Override
public void onSuccess(final URL url) {
if (url != null) {
Glide.with(getContext()).load(url.toString()).skipMemoryCache(true).diskCacheStrategy(DiskCacheStrategy.SOURCE).crossFade().placeholder(R.drawable.image_icon).listener(new CustomRequestListener(new CustomRequestListener.requestCallBack() {
@Override
public void onSuccess(boolean isSuccess) {
if (isSuccess) {
SaveUtil.getEncryptedEditor(getContext()).putString(child.fileInfo.unique_id, url.toString()).apply();
}
}
})).error(R.drawable.image_icon).into(holder.imageView);
}
}
});
}
}
})).error(R.drawable.image_icon).into(holder.imageView);
holder.resume_pause_select.setVisibility(View.INVISIBLE);
holder.fileprogressbar.setVisibility(View.INVISIBLE);
holder.upload_cancel.setVisibility(View.INVISIBLE);
break;
}
}