我正在处理图像并从中获取“数据”。然后,我在 RecyclerView 中显示这些内容。如有必要,我会在 RecyclerView 中更正一些数据。如何用其余所有内容上传校正后的数据,因为即使校正在RecyclerView中显示,它也没有上传更改,而是上传了错误的数据。有人可以帮我呆几天吗?
这是我的mainActivity的一部分,我正在其中将数据添加到 Recyclerview ?
TextExtractionActivity.class
if (fileDirectory.isDirectory()) {
listCroppedImages.clear();
EmptyViewCroppedImage.setVisibility(View.GONE);
RVCroppedImages.setVisibility(View.VISIBLE);
listCroppedImages.clear();
String PhotoPath[] = new String[100];
final String StudentMatric[] = new String[100];
final String AttendanceRecord[] = new String[100];
for (int i = 1; i <= fileDirectory.listFiles().length; i++) {
PhotoPath[i] = croppedImageDirectory + i + ".jpg";
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap croppedimageold = BitmapFactory.decodeFile(PhotoPath[i], options);
Bitmap croppedimagenew = Bitmap.createScaledBitmap(croppedimageold, 460, 66, true);
StudentMatric[i] = TextImageProcess(croppedimagenew);
AttendanceRecord[i] = CircleDetection(croppedimagenew, StudentMatric[i]);
listCroppedImages.add(new CroppedImageModel(String.valueOf(i), PhotoPath[i], StudentMatric[i], AttendanceRecord[i]));
btnUploadAttendance.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int x = 1; x <= listCroppedImages.size(); x++) {
UploadData(StudentMatric[x], AttendanceRecord[x], x);
}
}
});
}
} else {
EmptyViewCroppedImage.setVisibility(View.VISIBLE);
RVCroppedImages.setVisibility(View.GONE);
}
-----------------------------------------------------------------------
public void UploadData(final String StudentMatric, final String AttendanceRecord, final int x) {
ProgressUploadAttendance.setVisibility(View.VISIBLE);
Query query = StudentsRef.orderByKey().equalTo(StudentMatric);
query.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
if (dataSnapshot.exists()) {
int progress = x / listCroppedImages.size() * 100;
DatabaseReference StudentMatricRef = StudentsRef.child(StudentMatric).child("Attendance").push();
StudentMatricRef.child("Status").setValue(AttendanceRecord);
StudentMatricRef.child("Date").setValue(getCurrentDate());
ProgressUploadAttendance.setProgress(progress);
} else {
Toast.makeText(TextExtractionActivity.this, "Could not Find " + StudentMatric, Toast.LENGTH_LONG).show();
}
}
@Override
public void onCancelled(DatabaseError databaseError) {
throw databaseError.toException(); // don't ignore errors
}
});
}
“ RecyclerViewAdapterCroppedImages.class”
class RecyclerViewAdapterCroppedImages extends RecyclerView.Adapter<RecyclerViewAdapterCroppedImages.CroppedimageViewHolder> {
private Context mContext;
private List<CroppedImageModel> mData;
int x =0;
// private String StudentMatric, studentMatric, AttendanceStatus, attendanceStatus;
public RecyclerViewAdapterCroppedImages() { } //Constructor
public RecyclerViewAdapterCroppedImages(Context mContext, List<CroppedImageModel> mData) {
this.mContext = mContext;
this.mData = mData;
}
@Override
public CroppedimageViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View croppedimageview;
LayoutInflater mInflater = LayoutInflater.from(mContext);
croppedimageview = mInflater.inflate(R.layout.item_cropped_image, parent, false);
return new CroppedimageViewHolder(croppedimageview);
}
@Override
public void onBindViewHolder(final CroppedimageViewHolder holder, final int position) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
Bitmap croppedimageold = BitmapFactory.decodeFile(mData.get(position).getCroppedImagePath(), options);
Bitmap croppedimagenew = Bitmap.createScaledBitmap(croppedimageold, 528, 80, true);
holder.StudentNo.setText(mData.get(position).getStudentNo());
holder.CroppedImage.setImageBitmap(croppedimagenew);
holder.StudentId.setText(mData.get(position).getStudentMatric());
holder.StudentStatus.setText(mData.get(position).getAttendanceRecord());
holder.StudentStatus.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mData.get(position).getAttendanceRecord().equals("Failed")) {
holder.StudentStatus.setText("Present");
} else if (mData.get(position).getAttendanceRecord().equals("Present")) {
holder.StudentStatus.setText("Absent");
} else if (mData.get(position).getAttendanceRecord().equals("Absent")) {
holder.StudentStatus.setText("Present");
}
}
});
}
@Override
public int getItemCount() {
return mData.size();
}
class CroppedimageViewHolder extends RecyclerView.ViewHolder {
TextView StudentNo, StudentId, StudentStatus;
ImageView CroppedImage;
private CroppedimageViewHolder(View itemView) {
super(itemView);
StudentNo = itemView.findViewById(R.id.tvtxtprocessstudentno);
CroppedImage = itemView.findViewById(R.id.ivcroppedimage);
StudentId = itemView.findViewById(R.id.tvtxtprocessstudentid);
StudentStatus = itemView.findViewById(R.id.tvtxtprocessstudentstatus);
}
}
}
答案 0 :(得分:0)
我找到了解决方案。事情是我认为我必须通过位于我主要活动中的适配器来notifiyOnDatachange。但我不必..
在我的RecyclerViewAdapterCroppedImage.class
final CroppedImageModel changedRecord = mData.get(position);
holder.IVattendance.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (mData.get(position).getAttendanceRecord())
{
case "Failed":
mData.get(position).setAttendanceRecord("Present");
correctionAttendance(position, changedRecord);//code
break;
case "Present":
mData.get(position).setAttendanceRecord("Absent");
correctionAttendance(position, changedRecord);
break;
case "Absent":
mData.get(position).setAttendanceRecord("Present");
correctionAttendance(position, changedRecord);
break;
default:
break;
}
}
});
public void correctionAttendance(int position, CroppedImageModel attendanceRecord ) {
mData.set(position, attendanceRecord);
notifyItemChanged(position);
notifyDataSetChanged();
}
在我的TextExtractionActivity.class中,我直接从适配器获取数据,而不是在处理并将数据发送到适配器的位置。
btnUploadAttendance.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
for (int x = 0; x < listCroppedImages.size(); x++) {
UploadData(listCroppedImages.get(x).getStudentMatric(),listCroppedImages.get(x).getAttendanceRecord(),x);
}
}
});
,最后我的UploadData()与问题中说明的相同。 谢谢任何打算回答或提供格式更正的人。