Using Java to interact with Firebase in Android

Firebase is a platform used to build better apps, improve their quality and also to grow businesses. This talk will cover examples about how to create a new project in Firebase console, how to integrate Google sign-in in the Java code in Android, how to s

Transcript

1. Using Java to interact with Firebase in Android Magda Miu @magdamiu
2. What is Firebase? Build better apps Improve app quality Grow your business
4. Firebase works across platforms iOS Android Web C++ Unity
5. Developer experience matters
6. GDG Pitesti App 1. Authentication using Google Sign-In 2. Get the events from Cloud Firestore 3. Receive notifications 4. Detect and solve issues
7. Firebase Console
8. Create new project
9. Connect your app to the Firebase project
10. Connect your app to the Firebase project
11. Connect your app to the Firebase project
12. Connect your app to the Firebase project
13. Connect your app to the Firebase project
14. Agenda Firebase Authentication Firebase Cloud Firestore Firebase Cloud Messaging Firebase Crashlytics
15. Agenda Firebase Authentication Firebase Cloud Firestore Firebase Cloud Messaging Firebase Crashlytics
16. Firebase Authentication • Email & password • Google, Facebook, Twitter, and GitHub sign-in • Phone number
17. //project level dependencies { classpath 'com.android.tools.build:gradle:3.2.1' classpath 'com.google.gms:google-services:4.0.1' ... } //app level implementation 'com.google.firebase:firebase-auth:16.0.5' implementation 'com.google.android.gms:play-services-auth:16.0.1' apply plugin: 'com.google.gms.google-services'
18. GoogleSignInOptions gso = new GoogleSignInOptions .Builder(GoogleSignInOptions .DEFAULT_SIGN_IN) .requestIdToken(getString(R.string.default_web_client_id)) .requestEmail() .build();
19. GoogleSignInClient mGoogleSignInClient = GoogleSignIn.getClient(this, gso); FirebaseAuth mAuth = FirebaseAuth.getInstance();
20. Intent signInIntent = mGoogleSignInClient.getSignInIntent(); startActivityForResult(signInIntent, RC_SIGN_IN);
21. //onActivityResult if (requestCode == RC_SIGN_IN) { Task<GoogleSignInAccount> task = GoogleSignIn. getSignedInAccountFromIntent(data); try { GoogleSignInAccount account = task.getResult(ApiException.class); firebaseAuthWithGoogle(account); } catch (ApiException e) { Logging.show(TAG, "Google sign in failed", e); } }
22. //firebaseAuthWithGoogle AuthCredential credential = GoogleAuthProvider. getCredential(acct.getIdToken(), null); mAuth.signInWithCredential(credential) .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if (task.isSuccessful()) { //… } else { //… } } });
23. <uses-permission android:name="android.permission.INTERNET" />
24. Agenda Firebase Authentication Firebase Cloud Firestore Firebase Cloud Messaging Firebase Crashlytics
25. Firebase Cloud Firestore • NoSQL database built for global apps • Query and structure data the way you like • Build truly serverless apps • Sync data across devices, on or offline • Scale globally • Strong user-based security
26. Firebase Cloud Firestore v/s Firebase Realtime Database • Different data structure • Better querying on FS • Scalability • Pricing • Security • Write batch
27. FirebaseFirestore mFirebaseFirestore = FirebaseFirestore.getInstance();
28. mFirebaseFirestore.collection(FirestorePath.EVENTS) .get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() { @Override public void onComplete(@NonNull Task<QuerySnapshot> task) { if (task.isSuccessful()) { for (QueryDocumentSnapshot document : task.getResult()) { mEvents.add(parseData(document)); } } else { Log.w(TAG, "Error getting documents.", task.getException()); } } });
29. mFirebaseFirestore.collection(FirestorePath.EVENTS) .add(eventMap) .addOnSuccessListener(new OnSuccessListener<DocumentReference>() { @Override public void onSuccess(DocumentReference documentReference) { } }) .addOnFailureListener(new OnFailureListener() { @Override public void onFailure(@NonNull Exception e) { } });
30. Agenda Firebase Authentication Firebase Cloud Firestore Firebase Cloud Messaging Firebase Crashlytics
31. Firebase Cloud Messaging • Send messages to any device • Advanced message targeting • Customized notification content • No coding required for sending notifications
32. implementation 'com.google.firebase:firebase-messaging:17.3.4'
33. public class FirebaseImplementation extends FirebaseMessagingService { @Override public void onNewToken(String s) { super.onNewToken(s); } @Override public void onMessageReceived(RemoteMessage message) { sendMyNotification(message.getNotification().getBody()); } ...
34. <service android:name=".FirebaseImplementation"> <intent-filter> <action android:name="com.google.firebase.MESSAGING_EVENT" /> </intent-filter> </service>
35. <meta-data android:name="com.google.firebase.messaging.default_notification_icon" android:resource="@drawable/ic_menu_manage" /> <meta-data android:name="com.google.firebase.messaging.default_notification_color" android:resource="@color/colorAccent" /> <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
36. FirebaseMessaging.getInstance().setAutoInitEnabled(true); FirebaseInstanceId.getInstance().getInstanceId().addOnSuccessListener(MainAc tivity.this, new OnSuccessListener<InstanceIdResult>() { @Override public void onSuccess(InstanceIdResult instanceIdResult) { String newToken = instanceIdResult.getToken(); } });
37. FirebaseMessaging.getInstance().subscribeToTopic("the_topic") .addOnCompleteListener(new OnCompleteListener<Void>() { @Override public void onComplete(@NonNull Task<Void> task) { } });
38. Agenda Firebase Authentication Firebase Cloud Firestore Firebase Cloud Messaging Firebase Crashlytics
39. Firebase Crashlytics • Powerful, real time crash reporting • Quickly pinpoint the root cause of crashes • Understand what issue to tackle first • Never miss a critical crash +
40. maven { url 'https://maven.fabric.io/public' } classpath 'io.fabric.tools:gradle:1.26.1' implementation 'com.crashlytics.sdk.android:crashlytics:2.9.5' implementation('com.crashlytics.sdk.android:crashlytics:2.9.5@aar') { transitive = true; } <meta-data android:name="io.fabric.ApiKey" android:value="the_value_etc" />
41. Fabric.with(this, new Crashlytics()); Crashlytics.getInstance().crash(); // Force a crash
42. Resources • https://firebase.google.com/ • https://codelabs.developers.g oogle.com/ • https://firebase.google.com/d ocs/guides/
43. Thank you! Magda Miu @magdamiu