MainActivity.java

package com.example.root.ledcontrol;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.pusher.pushnotifications.PushNotifications;

public class MainActivity extends AppCompatActivity {
    Button on;
    Button off;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        PushNotifications.start(getApplicationContext(), "61d2753d-9e78-4bc5-86d4-61e44fedab27");
        PushNotifications.subscribe("hello");
        on = (Button) findViewById(R.id.on);
        off = (Button) findViewById(R.id.off);

        on.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("LED_STATUS");
                myRef.setValue(1);
            }
        });


        off.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                FirebaseDatabase database = FirebaseDatabase.getInstance();
                DatabaseReference myRef = database.getReference("LED_STATUS");
                myRef.setValue(0);


            }
        });
    }

}