how to push data in firebase using orderByValue in android?





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In my code I push data using child considered as (ID), and every onfresh method it will update values (val1, val2, val3) using setvalue method. But while pushing data it stored data in ascending order referring to ID (every time ID is create as child, if child not exists, if is exist is will update the value). So I want store such type of data, when data is push then, data must be store in sequentially like mdatarefrence.push() method works.



mFireDatabase = FirebaseDatabase.getInstance();
databaseReference = mFireDatabase.getReference().child("Matches").child("Match_"+getmatch_id).child("commentry");


mCommentryAdpter = new CommentryAdpter( getContext(),R.layout.commentrytuple, applications);

commentry.setAdapter(mCommentryAdpter);

databaseReference.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s)
{
mCommentryEntry = dataSnapshot.getValue(CommentryEntry.class);
mCommentryAdpter.add(mCommentryEntry);

ListUtils.setDynamicHeight(commentry);

}

@Override
public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

}

@Override
public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

}

@Override
public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

}

@Override
public void onCancelled(@NonNull DatabaseError databaseError) {

}


Condition while pushing data



   mCommentryEntry = new CommentryEntry(va1,val2,val3);   
databaseReference.child(ID).setValue(mCommentryEntry);









share|improve this question































    -1















    In my code I push data using child considered as (ID), and every onfresh method it will update values (val1, val2, val3) using setvalue method. But while pushing data it stored data in ascending order referring to ID (every time ID is create as child, if child not exists, if is exist is will update the value). So I want store such type of data, when data is push then, data must be store in sequentially like mdatarefrence.push() method works.



    mFireDatabase = FirebaseDatabase.getInstance();
    databaseReference = mFireDatabase.getReference().child("Matches").child("Match_"+getmatch_id).child("commentry");


    mCommentryAdpter = new CommentryAdpter( getContext(),R.layout.commentrytuple, applications);

    commentry.setAdapter(mCommentryAdpter);

    databaseReference.addChildEventListener(new ChildEventListener() {
    @Override
    public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s)
    {
    mCommentryEntry = dataSnapshot.getValue(CommentryEntry.class);
    mCommentryAdpter.add(mCommentryEntry);

    ListUtils.setDynamicHeight(commentry);

    }

    @Override
    public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

    }

    @Override
    public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

    }

    @Override
    public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

    }

    @Override
    public void onCancelled(@NonNull DatabaseError databaseError) {

    }


    Condition while pushing data



       mCommentryEntry = new CommentryEntry(va1,val2,val3);   
    databaseReference.child(ID).setValue(mCommentryEntry);









    share|improve this question



























      -1












      -1








      -1








      In my code I push data using child considered as (ID), and every onfresh method it will update values (val1, val2, val3) using setvalue method. But while pushing data it stored data in ascending order referring to ID (every time ID is create as child, if child not exists, if is exist is will update the value). So I want store such type of data, when data is push then, data must be store in sequentially like mdatarefrence.push() method works.



      mFireDatabase = FirebaseDatabase.getInstance();
      databaseReference = mFireDatabase.getReference().child("Matches").child("Match_"+getmatch_id).child("commentry");


      mCommentryAdpter = new CommentryAdpter( getContext(),R.layout.commentrytuple, applications);

      commentry.setAdapter(mCommentryAdpter);

      databaseReference.addChildEventListener(new ChildEventListener() {
      @Override
      public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s)
      {
      mCommentryEntry = dataSnapshot.getValue(CommentryEntry.class);
      mCommentryAdpter.add(mCommentryEntry);

      ListUtils.setDynamicHeight(commentry);

      }

      @Override
      public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

      }

      @Override
      public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

      }

      @Override
      public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

      }

      @Override
      public void onCancelled(@NonNull DatabaseError databaseError) {

      }


      Condition while pushing data



         mCommentryEntry = new CommentryEntry(va1,val2,val3);   
      databaseReference.child(ID).setValue(mCommentryEntry);









      share|improve this question
















      In my code I push data using child considered as (ID), and every onfresh method it will update values (val1, val2, val3) using setvalue method. But while pushing data it stored data in ascending order referring to ID (every time ID is create as child, if child not exists, if is exist is will update the value). So I want store such type of data, when data is push then, data must be store in sequentially like mdatarefrence.push() method works.



      mFireDatabase = FirebaseDatabase.getInstance();
      databaseReference = mFireDatabase.getReference().child("Matches").child("Match_"+getmatch_id).child("commentry");


      mCommentryAdpter = new CommentryAdpter( getContext(),R.layout.commentrytuple, applications);

      commentry.setAdapter(mCommentryAdpter);

      databaseReference.addChildEventListener(new ChildEventListener() {
      @Override
      public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s)
      {
      mCommentryEntry = dataSnapshot.getValue(CommentryEntry.class);
      mCommentryAdpter.add(mCommentryEntry);

      ListUtils.setDynamicHeight(commentry);

      }

      @Override
      public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

      }

      @Override
      public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {

      }

      @Override
      public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {

      }

      @Override
      public void onCancelled(@NonNull DatabaseError databaseError) {

      }


      Condition while pushing data



         mCommentryEntry = new CommentryEntry(va1,val2,val3);   
      databaseReference.child(ID).setValue(mCommentryEntry);






      android firebase firebase-realtime-database






      share|improve this question















      share|improve this question













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      edited Nov 23 '18 at 21:05









      Frank van Puffelen

      248k31396423




      248k31396423










      asked Nov 23 '18 at 20:31









      Shivam GuptaShivam Gupta

      11




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          1 Answer
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          0














          If you want to generate a push ID, call push() before calling setValue():



          mCommentryEntry = new CommentryEntry(va1,val2,val3);   
          databaseReference.child(ID).push().setValue(mCommentryEntry);


          Note that I'm not sure what ID is in your code snippet, so I just copied it here. If you want a unique, chronologically ordered, child key under databaseReference, you'd just call:



          databaseReference.push().setValue(mCommentryEntry);





          share|improve this answer
























          • i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

            – Shivam Gupta
            Nov 23 '18 at 21:16











          • sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

            – Shivam Gupta
            Nov 23 '18 at 21:22








          • 2





            That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

            – Frank van Puffelen
            Nov 23 '18 at 21:25











          • thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

            – Shivam Gupta
            Nov 24 '18 at 8:18











          • If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

            – Frank van Puffelen
            Nov 24 '18 at 14:53












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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

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          active

          oldest

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          active

          oldest

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          0














          If you want to generate a push ID, call push() before calling setValue():



          mCommentryEntry = new CommentryEntry(va1,val2,val3);   
          databaseReference.child(ID).push().setValue(mCommentryEntry);


          Note that I'm not sure what ID is in your code snippet, so I just copied it here. If you want a unique, chronologically ordered, child key under databaseReference, you'd just call:



          databaseReference.push().setValue(mCommentryEntry);





          share|improve this answer
























          • i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

            – Shivam Gupta
            Nov 23 '18 at 21:16











          • sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

            – Shivam Gupta
            Nov 23 '18 at 21:22








          • 2





            That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

            – Frank van Puffelen
            Nov 23 '18 at 21:25











          • thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

            – Shivam Gupta
            Nov 24 '18 at 8:18











          • If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

            – Frank van Puffelen
            Nov 24 '18 at 14:53
















          0














          If you want to generate a push ID, call push() before calling setValue():



          mCommentryEntry = new CommentryEntry(va1,val2,val3);   
          databaseReference.child(ID).push().setValue(mCommentryEntry);


          Note that I'm not sure what ID is in your code snippet, so I just copied it here. If you want a unique, chronologically ordered, child key under databaseReference, you'd just call:



          databaseReference.push().setValue(mCommentryEntry);





          share|improve this answer
























          • i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

            – Shivam Gupta
            Nov 23 '18 at 21:16











          • sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

            – Shivam Gupta
            Nov 23 '18 at 21:22








          • 2





            That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

            – Frank van Puffelen
            Nov 23 '18 at 21:25











          • thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

            – Shivam Gupta
            Nov 24 '18 at 8:18











          • If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

            – Frank van Puffelen
            Nov 24 '18 at 14:53














          0












          0








          0







          If you want to generate a push ID, call push() before calling setValue():



          mCommentryEntry = new CommentryEntry(va1,val2,val3);   
          databaseReference.child(ID).push().setValue(mCommentryEntry);


          Note that I'm not sure what ID is in your code snippet, so I just copied it here. If you want a unique, chronologically ordered, child key under databaseReference, you'd just call:



          databaseReference.push().setValue(mCommentryEntry);





          share|improve this answer













          If you want to generate a push ID, call push() before calling setValue():



          mCommentryEntry = new CommentryEntry(va1,val2,val3);   
          databaseReference.child(ID).push().setValue(mCommentryEntry);


          Note that I'm not sure what ID is in your code snippet, so I just copied it here. If you want a unique, chronologically ordered, child key under databaseReference, you'd just call:



          databaseReference.push().setValue(mCommentryEntry);






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 23 '18 at 21:07









          Frank van PuffelenFrank van Puffelen

          248k31396423




          248k31396423













          • i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

            – Shivam Gupta
            Nov 23 '18 at 21:16











          • sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

            – Shivam Gupta
            Nov 23 '18 at 21:22








          • 2





            That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

            – Frank van Puffelen
            Nov 23 '18 at 21:25











          • thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

            – Shivam Gupta
            Nov 24 '18 at 8:18











          • If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

            – Frank van Puffelen
            Nov 24 '18 at 14:53



















          • i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

            – Shivam Gupta
            Nov 23 '18 at 21:16











          • sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

            – Shivam Gupta
            Nov 23 '18 at 21:22








          • 2





            That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

            – Frank van Puffelen
            Nov 23 '18 at 21:25











          • thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

            – Shivam Gupta
            Nov 24 '18 at 8:18











          • If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

            – Frank van Puffelen
            Nov 24 '18 at 14:53

















          i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

          – Shivam Gupta
          Nov 23 '18 at 21:16





          i respect your answer but how will i update key's which genrerated by firebase? please tell me if key is exist it will be update value else it is add to arrayadpter.

          – Shivam Gupta
          Nov 23 '18 at 21:16













          sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

          – Shivam Gupta
          Nov 23 '18 at 21:22







          sir please give me your gmailid or whatsapp number i want to some need from you relation with realtime firebase. i am waiting for your replay... thank you

          – Shivam Gupta
          Nov 23 '18 at 21:22






          2




          2





          That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

          – Frank van Puffelen
          Nov 23 '18 at 21:25





          That's not how Stack Overflow works Shivam. But at this point it is also unclear to me what you're trying to accomplish. Here are the options for generating child nodes: 1) If you want to control the key used yourself, use child(keyThatYouWant).setValue(...). 2) If you want Firebase to generate a unique, chronological key for you use push().setValue(...).

          – Frank van Puffelen
          Nov 23 '18 at 21:25













          thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

          – Shivam Gupta
          Nov 24 '18 at 8:18





          thnkxx for reply but i am pushing value in firebase using option first , child(keyThatYouWant).setValue(...) but in this case , data stored in database in ascending order reffering to (KeyThatYouWant). means instead of (KeyThatYouWant) i use Unique (ID) and reffering to Unique (ID) data store in Acsending order , i want achive that data must be stored chronologically ordered but data stored in acsending order. sir please help me, i am waiting for your reply

          – Shivam Gupta
          Nov 24 '18 at 8:18













          If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

          – Frank van Puffelen
          Nov 24 '18 at 14:53





          If you want to determine your own keys, but still want to retrieve the nodes in chronological order, add a timestamp to each node, and then retrieve the nodes with ref.orderByChild("timestamp").

          – Frank van Puffelen
          Nov 24 '18 at 14:53




















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