kenny-io

public class MainActivity extends AppCompatActivity {

    private static final String NAME_KEY = "Name";
    private static final String EMAIL_KEY = "Email";
    private static final String PHONE_KEY = "Phone";

FirebaseFirestore db;
    TextView textDisplay;

@Override

kenny-io

private void addNewContact(){
        Map<String, Object>newContact = new HashMap<>();
        newContact.put(NAME_KEY, "John");
        newContact.put(EMAIL_KEY, "john@gmail.com");
        newContact.put(PHONE_KEY, "080-0808-009");
        db.collection("PhoneBook").document("Contacts").set(newContact)
                .addOnSuccessListener(new OnSuccessListener<Void>() {
                    @Override
                    public void onSuccess(Void aVoid) {
                        Toast.makeText(MainActivity.this, "User Registered",

kenny-io

private void ReadSingleContact() {
        DocumentReference user = db.collection("PhoneBook").document("Contacts");
        user.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
                if (task.isSuccessful()){
                    DocumentSnapshot doc = task.getResult();
                    StringBuilder fields = new StringBuilder("");
                    fields.append("Name: ").append(doc.get("Name"));
                    fields.append("\nEmail: ").append(doc.get("Email"));

kenny-io

private void UpdateData() {
        DocumentReference contact = db.collection("PhoneBook").document("Contacts");
        contact.update(NAME_KEY, "Kenny");
        contact.update(EMAIL_KEY, "kenny@gmail.com");
        contact.update(PHONE_KEY, "090-911-419")
                .addOnSuccessListener(new OnSuccessListener<Void>() {
            @Override
            public void onSuccess(Void aVoid) {
                Toast.makeText(MainActivity.this, "Updated Successfully",
                        Toast.LENGTH_SHORT).show();

kenny-io

private void addRealtimeUpdate() {
        DocumentReference contactListener = db.collection("PhoneBook").document("Contacts");
        contactListener.addSnapshotListener(new EventListener<DocumentSnapshot>() {
            @Override
            public void onEvent(DocumentSnapshot documentSnapshot, FirebaseFirestoreException e) {
                if (e != null ){
                    Log.d("ERROR", e.getMessage());
                    return;
                }
                if (documentSnapshot != null && documentSnapshot.exists()){

kenny-io

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="16dp"
    tools:context="com.example.ekene.firestore.MainActivity">

kenny-io

public class MainActivity extends AppCompatActivity {

    private static final String NAME_KEY = "Name";
    private static final String EMAIL_KEY = "Email";
    private static final String PHONE_KEY = "Phone";
    FirebaseFirestore db;
    TextView textDisplay;
    TextView message;
    EditText name, email, phone;
    Button save;

kenny-io

private void addNewContact(){
        save    = findViewById(R.id.save);
        name    = findViewById(R.id.name);
        email   = findViewById(R.id.email);
        phone   = findViewById(R.id.phone);
        
        String mName = name.getText().toString();
        String mEmail = email.getText().toString();
        String mPhone = phone.getText().toString();
        

kenny-io

private void addRealtimeUpdate() {
    DocumentReference contactListener = db.collection("PhoneBook").document("Contacts");
    contactListener.addSnapshotListener(new EventListener<DocumentSnapshot>() {
        @Override
        public void onEvent(DocumentSnapshot documentSnapshot, FirebaseFirestoreException e) {
            if (e != null ){
                Log.d("ERROR", e.getMessage());
                return;
            }
            if (documentSnapshot != null && documentSnapshot.exists()){

kenny-io

compile 'com.android.support:cardview-v7:26.0.+'
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile group: 'com.cloudinary', name: 'cloudinary-android', version: '1.20.0'