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Firebase for Android
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Dhrumil Shah
November 02, 2015
Programming
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220
Firebase for Android
Basic introduction about Firebase and how easy it is to use for Android.
Dhrumil Shah
November 02, 2015
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Transcript
FIREBASE for ANDROID By: Dhrumil Shah
The Realtime Backend for your App
Creating an app shouldn’t require managing complex infrastructure.
THE FULL STACK
The full stack is never really that simple
… and neither is the client side
The user doesn’t care about your backend
THE USER EXPECTS Speed Offline Multi-platform Simple Authentication
FIREBASE The Realtime Backend for your App
THE FIREBASE BACKEND
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CLOUD DATABASE NoSQL data-store Returns JSON from a RESTful API
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REALTIME DATA Whenever data is updated in Firebase, it sends
the update down to every listening client
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STORE DATA Firebase ref = new Firebase("https://<your-firebase-app>.firebaseio.com/message"); ref.setValue("All the things");
SYNC DATA Firebase ref = new Firebase("https://<your-firebase-app>.firebaseio.com/message"); ref.addValueEventListener(new ValueEventListener() {
@Override public void onDataChange(DataSnapshot snapshot) { System.out.println(snapshot.getValue()); } @Override public void onCancelled(FirebaseError error) { } });
OFFLINE
INTERMITTENT OFFLINE What happens when you go through a tunnel?
Firebase clients store a local cache of your data. When the user goes offline, the app still works as expected with the local cache.
ENTENDED OFFLINE What happens when you go on a flight?
On mobile, Firebase persists data to a local store. The app will continue to work even across app restarts.
ONE LINE OF CODE Firebase.getDefaultConfig().setPersistenceEnabled(true);
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Firebase supports several forms of authentication Email & Password Google
Twitter Facebook Github Anonymous … and even custom backends
AUTHENTICATION ref.authWithOAuthToken("google", "<OAuth Token>", new Firebase. AuthResultHandler() { @Override public
void onAuthenticated(AuthData authData) { // the Google user is now authenticated with your Firebase app } @Override public void onAuthenticationError(FirebaseError firebaseError) { // there was an error } });
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SECURITY By default everyone can read and write { "rules":
{ ".read": true, ".write": true, } }
SECURITY Everyone can read, but no one can write {
"rules": { ".read": true, ".write": false, } }
SECURITY Secure specific parts of your firebase { "rules": {
".read": true, “message”: { ".write": false, } } }
WELL DOCUMENTED
FIREBASE META-DATA 276,348 registered developers 1M concurrent users on Firebase
sites Joined Google October, 2014
FOCUS ON YOUR APP The user doesn’t care about the
backend What matters is that your app is fast and enjoyable
QUESTIONS ?? http://www.dhuma1981.in
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