Vfrdtyky

I couldn't get the value from Firebase. I had 2 class, MainGarden and Resort class. I do also import google-service json file in my database. The value return is only null.

MainGarden.java

package com.example.xh3al3r.myapplication2;



import android.support.annotation.NonNull;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.os.AsyncTask;

import android.view.View;

import android.widget.Button;

import android.widget.CompoundButton;

import android.widget.EditText;

import android.util.Log;

import android.net.wifi.WifiManager;

import android.text.format.Formatter;

import android.widget.SeekBar;

import android.widget.TextView;

import android.widget.ToggleButton;



import com.firebase.client.Firebase;

import com.google.firebase.database.DataSnapshot;

import com.google.firebase.database.DatabaseError;

import com.google.firebase.database.DatabaseReference;

import com.google.firebase.database.FirebaseDatabase;

import com.google.firebase.database.ValueEventListener;

import com.google.firebase.iid.FirebaseInstanceId;



import javax.annotation.Nonnull;





public class MainGarden extends AppCompatActivity {

    TextView textView;

    DatabaseReference refmoisture;



    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main_garden);

        final TextView moisturevalue = (TextView) findViewById(R.id.textView15);



        refmoisture = FirebaseDatabase.getInstance().getReference("Resort");

        refmoisture.addValueEventListener(new ValueEventListener() {

            @Override

            public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                for (DataSnapshot resortSnapsot : dataSnapshot.getChildren()) {

                    Resort model = resortSnapsot.getValue(Resort.class);

                    moisturevalue.setText( model.getValues());

                }

            }



            @Override

            public void onCancelled(DatabaseError databaseError) {



            }

        });





    }







}

Resort.class

package com.example.xh3al3r.myapplication2;



public class Resort {

    private String Moisture;



    public Resort(){



    }





    public Resort(String moisture){



        Moisture=moisture;

    }



    public String getValues() {

        return Moisture;

    }



    public void setValues(String valuess) {



        Moisture=valuess;

    }

}

I had attached the json of my database. I wish to getValue of "Moisture" but I just can't.

You can make these changes in your code

  refmoisture = FirebaseDatabase.getInstance().getReference("Resort").child("Moisture");

            refmoisture.addValueEventListener(new ValueEventListener() {

                @Override

                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {

                  if(dataSnapshot.exist()){



                  String value = dataSnapshot.child("Value").getValue().toString();

                   moisturevalue.setText( value);

              }

                }



                @Override

                public void onCancelled(DatabaseError databaseError) {



                }

            });

Hope It Works !!!

Use this code

    refmoisture = FirebaseDatabase.getInstance().getReference().child("Resort").child("Moisture");

    refmoisture.addValueEventListener(new ValueEventListener() {

        @Override

        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {



                String moisture = dataSnapshot.child("Value").getValue().toString();

                moisturevalue.setText( moisture);



        }



        @Override

        public void onCancelled(DatabaseError databaseError) {



        }

    });