EngagedFragment

package com.bertho.gmyl.fragments;


import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.bertho.gmyl.R;
import com.bertho.gmyl.model.Engaged;
import com.bertho.gmyl.realm.RealmHelper;
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;

public class EngagedFragment extends Fragment implements View.OnClickListener {

    private static final String TAG = EngagedFragment.class.getSimpleName();

    private EditText nama, email, nohp;
    private Button btnSaveConnection;
    private DatabaseReference mFirebaseDatabase;
    private FirebaseDatabase mFirebaseInstance;
    private RelativeLayout mRoot;
    private View rootView;
    private String userId;
    private TextView lblNama, lblEmail, lblNohp;
    private RelativeLayout relativeLayout;

    private RealmHelper realmHelper;


    public EngagedFragment() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        rootView = inflater.inflate(R.layout.fragment_engaged, container, false);

        realmHelper = new RealmHelper(getActivity());

        String appName = getResources().getString(R.string.app_name);

        loadLocalDB();

        nama = (EditText) rootView.findViewById(R.id.txtName);
        email = (EditText) rootView.findViewById(R.id.txtEmail);
        nohp = (EditText) rootView.findViewById(R.id.txtNoHp);

        lblNama = (TextView) rootView.findViewById(R.id.lblNameval);
        lblEmail = (TextView) rootView.findViewById(R.id.lblEmailval);
        lblNohp = (TextView) rootView.findViewById(R.id.lblNohpval);
        relativeLayout = (RelativeLayout) rootView.findViewById(R.id.panelLabelDetail);
        btnSaveConnection = (Button) rootView.findViewById(R.id.btnEngaged);


        mFirebaseInstance = FirebaseDatabase.getInstance();

        mFirebaseDatabase = mFirebaseInstance.getReference("tbl_engaged");

        mFirebaseInstance.getReference("titleapp").setValue(appName);

        mFirebaseInstance.getReference("titleapp").addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                Log.e(TAG, "TITLE UPDATED FROM FIREBASE");
                String appTitle = dataSnapshot.getValue(String.class);
                ((AppCompatActivity)getActivity()).getSupportActionBar().setTitle(appTitle);
            }

            @Override
            public void onCancelled(DatabaseError error) {
                Log.e(TAG, "FAILED TO READ TITLE FROM FIREBASE.", error.toException());
            }
        });

        btnSaveConnection.setOnClickListener(this);

        return rootView;
    }

    private void showSnack(String notify) {
        mRoot = (RelativeLayout) rootView.findViewById(R.id.frag_engaged);
        Snackbar snackbar = Snackbar.make(mRoot, notify, Snackbar.LENGTH_LONG);
        snackbar.show();
    }

    public interface SubmitListener {
        void onSubmit();
    }

    private SubmitListener onSubmitListener;

    public void setSubmitListener(SubmitListener onSubmitListener){
        this.onSubmitListener = onSubmitListener;
    }

    public SubmitListener getOnSubmitListener(){
        return onSubmitListener;
    }

    public void onClick(View v) {

        if(v.getId() == R.id.btnEngaged) {

            String txtName = nama.getText().toString();
            String txtEmail = email.getText().toString();
            String txtNo = nohp.getText().toString();

            if(txtName.equals("") || txtName.isEmpty()) {
                showSnack("Name must filled");
                nama.requestFocus();
            } else if (txtEmail.equals("") || txtEmail.isEmpty()) {
                showSnack("Email must filled");
                email.requestFocus();
            } else if (txtNo.equals("") || txtNo.isEmpty()) {
                showSnack("No.HP must filled");
                nohp.requestFocus();
            } else {
                createUser(txtName, txtEmail, txtNo);
                saveToLocalDB(txtName, txtEmail, txtNo);
            }
        }
    }

    private void saveToLocalDB(String txtName, String txtEmail, String txtNo) {
        realmHelper.addEngaged(txtName, txtEmail, txtNo);
        onSubmitListener.onSubmit();
    }

    private void loadLocalDB() {
        realmHelper.getAllData();
    }

    private void createUser(String name, String email, String nohp) {
        userId = mFirebaseDatabase.push().getKey();
        Engaged user = new Engaged(name, email, nohp);
        mFirebaseDatabase.child(userId).setValue(user);
        addUserChangeListener();
    }

    private void addUserChangeListener() {

        mFirebaseDatabase.child(userId).addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                Engaged user = dataSnapshot.getValue(Engaged.class);

                if (user == null) {
                    Log.e(TAG, "ENGAGED DATA IS NULL");
                    return;
                }

                Log.e(TAG, "ENGAGED DATA IS CHANGED!" + user.name + ", " + user.email);

                lblNama.setText(user.name);
                lblEmail.setText(user.email);
                lblNohp.setText(user.nohp);

                //relativeLayout.setVisibility(View.VISIBLE);

                nama.setText("");
                email.setText("");
                nohp.setText("");
            }

            @Override
            public void onCancelled(DatabaseError error) {
                // Failed to read value
                Log.e(TAG, "FAILED TO READ USER", error.toException());
            }
        });
    }
}