recyclerview行IGNORE重复

Question

我有一个应用程序，我捕获图像并将其与DATE的名称保存到firebase实时数据库。

我从我的MainActivity中检索我的图像名称（日期）到另一个活动的Recyclerview。

当我在MainActivity中调用相机时，它会在捕获时自动上传文件。这是上传图片的代码：

 private void uploadFile() {
    final String bothStamp = new SimpleDateFormat("yyyy.MM.dd HH mm ss").format(new Date());
    final String dateStamp = new SimpleDateFormat("yyyy.MM.dd").format(new Date());
    final String timeStamp = new SimpleDateFormat("HH mm ss").format(new Date());

    if (mImageUri != null) {
        StorageReference fileReference = mStorageRef.child(bothStamp
                + "." + getFileExtension(mImageUri));

        mUploadTask = fileReference.putFile(mImageUri)
                .addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
                    @Override
                    public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {
                        Handler handler = new Handler();
                        handler.postDelayed(new Runnable() {
                            @Override
                            public void run() {
                                mProgressBar.setProgress(0);
                            }
                        }, 500);

                        Toast.makeText(MainActivity.this, "Upload successful", Toast.LENGTH_LONG).show();
                        Upload upload = new Upload(
                                taskSnapshot.getDownloadUrl().toString(), dateStamp, timeStamp );

                        String uploadId = mDatabaseRef.push().getKey();
                        mDatabaseRef.child(uploadId).setValue(upload);

然后我有我的UPLOAD课程：

public class Upload {

private String mTime;
private String mName;
private String mImageUrl;


public Upload() {
    //empty constructor 
}

public Upload(String imageUrl, String name, String time) {

    mImageUrl = imageUrl;
    mName = name;
    mTime = time;

}


public String getName() {
    return mName;
}

public void setName(String name) {
    mName = name;
}

public String getImageUrl() {
    return mImageUrl;
}




public void setImageUrl(String imageUrl) {
    mImageUrl = imageUrl;
}
}

然后我有了适用于recyclerview的ADAPTER：

public class DateListAdapter extends RecyclerView.Adapter<DateListAdapter.ImageViewHolder> {
private Context mContext;
private List<Upload> mUploads;



public DateListAdapter(Context context, List<Upload> uploads) {

    mContext = context;
    mUploads = uploads;
}


@Override
public DateListAdapter.ImageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(mContext).inflate(R.layout.date_list, parent, false);
    return new DateListAdapter.ImageViewHolder(v);
}


@Override
public void onBindViewHolder(ImageViewHolder holder, int position) {
    Upload uploadCurrent = mUploads.get(position);
    String dateName = uploadCurrent.getName();

        holder.textViewName.setText(dateName);
    }



@Override
public int getItemCount() {
    return mUploads.size();
}

public class ImageViewHolder extends RecyclerView.ViewHolder {
    public TextView textViewName;

    public ImageViewHolder(View itemView) {
        super(itemView);
        textViewName = (TextView) itemView.findViewById(R.id.text_view_name_date);

    }
}
}

现在，当我在一天内捕获多个图像时，这是我的输出：

This is what my code output is right now in the user interface

这就是我想在OUTPUT中拥有的内容：

This is what I would like to show in my RECYCLERVIEW

所以我的目的是创建一个CLEAN和简单的USER界面。我不希望显示多个日期，我只想要一个日期，然后当用户点击日期时，它应该显示在该日期捕获的所有图像。

这是我的RecyclerView活动中的EventListener：

mDatabaseRef.addChildEventListener(new ChildEventListener() {
        @Override
        public void onChildAdded(DataSnapshot dataSnapshot, String s) {
            for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
                Upload upload = postSnapshot.getValue(Upload.class);

                mUploads.add(upload);
            }


            mAdapter = new DateListAdapter(CapturedImageDateListActivity.this, mUploads);
            mRecyclerView.setAdapter(mAdapter);

        }