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Fetching data from Firebase into a Nested Recycler View not working as expected

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0

I want to make a Play Store clone, fetching data from Firebase is not
working properly... You can figure out from the screenshot, basically, every category have ALL the apps

Red - AppModel

Green - ParentModel (categories)

Blue - All the apps

Database:

I have added only the part that is important if you need more but I don't think it is the case, ask for it. Thank you very much!

ParentModel is an object that takes a string as a category name and an array list of AppModel

mDatabaseRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshotBig) 
 for (final String s : mCategoryStrings) //for every string is the categories array
 final ParentModel parentModel = new ParentModel();
 apps = new ArrayList<>();
 DatabaseReference smallRef = mDatabaseRef.child(s); //HERE: Geting the category db reference for each s
 smallRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshot) 
 for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) 
 AppModel appModel = postSnapshot.getValue(AppModel.class); //getting it
 apps.add(appModel);
 parentModel.setTitle(s);
 parentModel.setArrayList(apps);
 
 

 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

 parentModel.setArrayList(apps); //setting the array
 mParents.add(parentModel); //adding it to the parents array list
 //END OF String s FOR


 mAdapter = new ParentAdapter(getContext(), mParents);
 mRecyclerView.setAdapter(mAdapter);
 //END OF BIG ON DATA CHANGE


 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

firebase-realtime-database nestedrecyclerview

share|improve this question

asked Mar 8 at 21:10

SKREFISKREFI

457

add a comment | 

0

I want to make a Play Store clone, fetching data from Firebase is not
working properly... You can figure out from the screenshot, basically, every category have ALL the apps

Red - AppModel

Green - ParentModel (categories)

Blue - All the apps

Database:

I have added only the part that is important if you need more but I don't think it is the case, ask for it. Thank you very much!

ParentModel is an object that takes a string as a category name and an array list of AppModel

mDatabaseRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshotBig) 
 for (final String s : mCategoryStrings) //for every string is the categories array
 final ParentModel parentModel = new ParentModel();
 apps = new ArrayList<>();
 DatabaseReference smallRef = mDatabaseRef.child(s); //HERE: Geting the category db reference for each s
 smallRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshot) 
 for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) 
 AppModel appModel = postSnapshot.getValue(AppModel.class); //getting it
 apps.add(appModel);
 parentModel.setTitle(s);
 parentModel.setArrayList(apps);
 
 

 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

 parentModel.setArrayList(apps); //setting the array
 mParents.add(parentModel); //adding it to the parents array list
 //END OF String s FOR


 mAdapter = new ParentAdapter(getContext(), mParents);
 mRecyclerView.setAdapter(mAdapter);
 //END OF BIG ON DATA CHANGE


 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

firebase-realtime-database nestedrecyclerview

share|improve this question

asked Mar 8 at 21:10

SKREFISKREFI

457

add a comment | 

I want to make a Play Store clone, fetching data from Firebase is not
working properly... You can figure out from the screenshot, basically, every category have ALL the apps

Red - AppModel

Green - ParentModel (categories)

Blue - All the apps

Database:

I have added only the part that is important if you need more but I don't think it is the case, ask for it. Thank you very much!

ParentModel is an object that takes a string as a category name and an array list of AppModel

mDatabaseRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshotBig) 
 for (final String s : mCategoryStrings) //for every string is the categories array
 final ParentModel parentModel = new ParentModel();
 apps = new ArrayList<>();
 DatabaseReference smallRef = mDatabaseRef.child(s); //HERE: Geting the category db reference for each s
 smallRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshot) 
 for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) 
 AppModel appModel = postSnapshot.getValue(AppModel.class); //getting it
 apps.add(appModel);
 parentModel.setTitle(s);
 parentModel.setArrayList(apps);
 
 

 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

 parentModel.setArrayList(apps); //setting the array
 mParents.add(parentModel); //adding it to the parents array list
 //END OF String s FOR


 mAdapter = new ParentAdapter(getContext(), mParents);
 mRecyclerView.setAdapter(mAdapter);
 //END OF BIG ON DATA CHANGE


 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

firebase-realtime-database nestedrecyclerview

share|improve this question

asked Mar 8 at 21:10

SKREFISKREFI

457

mDatabaseRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshotBig) 
 for (final String s : mCategoryStrings) //for every string is the categories array
 final ParentModel parentModel = new ParentModel();
 apps = new ArrayList<>();
 DatabaseReference smallRef = mDatabaseRef.child(s); //HERE: Geting the category db reference for each s
 smallRef.addValueEventListener(new ValueEventListener() 
 @Override
 public void onDataChange(@NonNull DataSnapshot dataSnapshot) 
 for (DataSnapshot postSnapshot : dataSnapshot.getChildren()) 
 AppModel appModel = postSnapshot.getValue(AppModel.class); //getting it
 apps.add(appModel);
 parentModel.setTitle(s);
 parentModel.setArrayList(apps);
 
 

 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

 parentModel.setArrayList(apps); //setting the array
 mParents.add(parentModel); //adding it to the parents array list
 //END OF String s FOR


 mAdapter = new ParentAdapter(getContext(), mParents);
 mRecyclerView.setAdapter(mAdapter);
 //END OF BIG ON DATA CHANGE


 @Override
 public void onCancelled(@NonNull DatabaseError databaseError) 
 Toast.makeText(getContext(), databaseError.getMessage(), Toast.LENGTH_SHORT).show();
 
 );

share|improve this question

asked Mar 8 at 21:10

SKREFISKREFI

457

share|improve this question

asked Mar 8 at 21:10

SKREFISKREFI

457

asked Mar 8 at 21:10

SKREFISKREFI

457

asked Mar 8 at 21:10

SKREFISKREFI

457