Quickly build your app alone with Firebase- Android Makers 2018

Creating a personal Android app requires us to solve a lot of common challenges. Sometimes some of these challenges require so much time that we start to forget about the product we are building. Firebase can act as a toolbox to give functionality like analytics, databases, messaging and crash reporting so we can move quickly and focus on our users.

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1. Quickly build your app alone with Firebase @renaud_mathieu
3. Have you ever thought about creating your own app?
4. I have an idea…
5. but…
6. I don’t have the time.
7. GET STARTED
8. ‣ Design ‣ Develop ‣ Distribute GET STARTED
9. ‣ Design ‣ Develop ‣ Distribute GET STARTED
10. Minimum Viable Product (MVP)
11. You might need ‣ Feedback system ‣ Authentication ‣ Social Integration ‣ Analytics ‣ Remote control ‣ Notifications ‣ Device compatibility ‣ Permissions ‣ Tests ‣ Architecture ‣ Kotlin
12. Why Firebase?
13. Firebase is not the answer.
14. Firebase could help.
15. You might need ‣ Feedback system ‣ Authentication ‣ Social Integration ‣ Analytics ‣ Remote control ‣ Notifications ‣ Device compatibility ‣ Permissions ‣ Tests ‣ Architecture ‣ Kotlin
16. ‣ Free1 ‣ Scalable ‣ Solve common challenges 1. But limited
17. Time Money Resources
18. Firebase Products
19. Firebase Products Cloud Firestore Cloud Functions Authentication Cloud Storage Infra
20. Firebase Products Cloud Firestore Cloud Functions Authentication Cloud Storage Crashlytics Analytics Remote Config Feedback Infra Messaging
21. implementation 'com.crashlytics.sdk.android:crashlytics:2.9.1'
 implementation 'com.google.firebase:firebase-core:15.0.0' implementation 'com.google.firebase:firebase-config:15.0.0' implementation 'com.google.firebase:firebase-messaging:15.0.0' implementation 'com.google.firebase:firebase-firestore:15.0.0' implementation 'com.google.firebase:firebase-storage:15.0.0' implementation 'com.google.firebase:firebase-auth:15.0.0' build.gradle Firebase Products
22. implementation 'com.crashlytics.sdk.android:crashlytics:2.9.1'
 implementation 'com.google.firebase:firebase-core:15.0.0' implementation 'com.google.firebase:firebase-config:15.0.0' implementation 'com.google.firebase:firebase-messaging:15.0.0' implementation 'com.google.firebase:firebase-firestore:15.0.0' implementation 'com.google.firebase:firebase-storage:15.0.0' implementation ‘com.google.firebase:firebase-auth:15.0.0' build.gradle Firebase Products
23. Core
24. Core implementation 'com.google.firebase:firebase-core:15.0.0' 1/4 build.gradle
25. Core abstract class BaseFragment : Fragment() { lateinit var firebaseAnalytics: FirebaseAnalytics override fun onAttach(context: Context?) { super.onAttach(context) firebaseAnalytics = FirebaseAnalytics.getInstance(this) } } 2/4
26. Core // Analytics firebaseAnalytics.logEvent(FirebaseAnalytics.Event.ECOMMERCE_PURCHASE, Bundle().apply { putString(FirebaseAnalytics.Param.CURRENCY, receiptModel.currency) putDouble(FirebaseAnalytics.Param.PRICE, receiptModel.amount / 100.0) putString(FirebaseAnalytics.Param.TRANSACTION_ID, receiptModel.id) putInt(FirebaseAnalytics.Param.QUANTITY, receiptModel.items.sumBy { it.quantity }) }) 3/4
27. # adb shell setprop debug.firebase.analytics.app <package_name> DebugView 4/4
28. Crashlytics
29. Crashlytics implementation 'com.crashlytics.sdk.android:crashlytics:2.9.1' 1/4 build.gradle
30. Crashlytics Build Type Release Build Type Debug Enabled Disabled
31. Crashlytics <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"> <application> <meta-data android:name="firebase_crashlytics_collection_enabled" android:value="false" /> </application> </manifest> debug/AndroidManifest.xml
32. Crashlytics https://developer.android.com/studio/build/manifest-merge.html
33. Crashlytics class CrashlyticsTree(val applicationTag: String) : Timber.Tree() { override fun log(priority: Int, tag: String?, message: String, t: Throwable?) { val crashlyticsTag = tag ?: applicationTag // Log the message to Crashlytics, so we can see it in crash reports Crashlytics.log(priority, crashlyticsTag, message); // Log the exception in Crashlytics if we have one. if (t != null) { Crashlytics.logException(t) } // If this is an error or a warning, log it as a exception so we see it in Crashlytics. if (priority > Log.WARN) { Crashlytics.logException(Throwable(message)) } } }
34. Crashlytics object LogManager { fun init(tag: String) { Timber.plant(Timber.DebugTree()) } fun setUserId(id: String) { // No-op in Debug } }
35. Crashlytics object LogManager { fun init(tag: String) { Timber.plant(CrashlyticsTree(tag)) } fun setUserId(id: String) { Crashlytics.setUserIdentifier(id) } }
36. Crashlytics object LogManager { fun init(tag: String) { Timber.plant(Timber.DebugTree()) } fun setUserId(id: String) { // No-op in Debug } } object LogManager { fun init(tag: String) { Timber.plant(CrashlyticsTree(tag)) } fun setUserId(id: String) { Crashlytics.setUserIdentifier(id) } } private fun initLogManager() { if (!BuildConfig.DEBUG) { Fabric.with(this, Crashlytics()) } LogManager.init(getString(R.string.app_name)) }
37. Crashlytics
38. Crashlytics
39. Remote Config
40. Remote Config @Singleton @Component( modules = arrayOf( AndroidSupportInjectionModule::class, ApplicationModule::class, ActivityModule::class, FirebaseModule::class ) ) interface ApplicationComponent : AndroidInjector<NeosApplication> { @Component.Builder interface Builder { fun build(): ApplicationComponent @BindsInstance fun application(application: Application): Builder } }
41. Remote Config @Module class FirebaseModule { @Singleton @Provides fun provideFirebaseRemoteConfig(): FirebaseRemoteConfig = FirebaseRemoteConfig.getInstance() }
42. Remote Config abstract class BaseActivity : AppCompatActivity(), HasSupportFragmentInjector { companion object { const val FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION: Long = 3600 } @Inject lateinit var firebaseRemoteConfig: FirebaseRemoteConfig override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) initAndFetchFirebaseRemoteConfig() } private fun initAndFetchFirebaseRemoteConfig() { firebaseRemoteConfig.setDefaults(R.xml.remote_config_defaults) firebaseRemoteConfig.fetch(FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION).addOnCompleteListener { if (it.isSuccessful) { firebaseRemoteConfig.activateFetched() } else { Timber.w("Firebase Remote Config Fetch Failed.") } } } }
43. Remote Config abstract class BaseActivity : AppCompatActivity(), HasSupportFragmentInjector { companion object { const val FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION: Long = 3600 } @Inject lateinit var firebaseRemoteConfig: FirebaseRemoteConfig override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) initAndFetchFirebaseRemoteConfig() } private fun initAndFetchFirebaseRemoteConfig() { firebaseRemoteConfig.setDefaults(R.xml.remote_config_defaults) firebaseRemoteConfig.fetch(FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION).addOnCompleteListener { if (it.isSuccessful) { firebaseRemoteConfig.activateFetched() } else { Timber.w("Firebase Remote Config Fetch Failed.") } } } }
44. Remote Config abstract class BaseActivity : AppCompatActivity(), HasSupportFragmentInjector { companion object { const val FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION: Long = 3600 } @Inject lateinit var firebaseRemoteConfig: FirebaseRemoteConfig override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) initAndFetchFirebaseRemoteConfig() } private fun initAndFetchFirebaseRemoteConfig() { firebaseRemoteConfig.setDefaults(R.xml.remote_config_defaults) firebaseRemoteConfig.fetch(FIREBASE_REMOTE_CONFIG_CACHE_EXPIRATION).addOnCompleteListener { if (it.isSuccessful) { firebaseRemoteConfig.activateFetched() } else { Timber.w("Firebase Remote Config Fetch Failed.") } } } }
45. Remote Config abstract class BaseFragment : Fragment(), HasSupportFragmentInjector { @Inject lateinit var childFragmentInjector: DispatchingAndroidInjector<Fragment> @Inject lateinit var firebaseRemoteConfig: FirebaseRemoteConfig lateinit var firebaseAnalytics: FirebaseAnalytics override fun onAttach(context: Context?) { AndroidSupportInjection.inject(this) super.onAttach(context) firebaseAnalytics = FirebaseAnalytics.getInstance(context) } }
46. Remote Config class ProfileFragment @Inject constructor() : BaseFragment() { val URL_SHARING: String by lazy { firebaseRemoteConfig.getString(REMOTE_CONFIG_SHARING_URL) } private fun shareNeosApp() { val intent = Intent().apply { action = Intent.ACTION_SEND putExtra(Intent.EXTRA_TEXT, URL_SHARING) type = "text/plain" } startActivity(Intent.createChooser( intent, resources.getText(R.string.profile_share))) } }
47. Remote Config class ProfileFragment @Inject constructor() : BaseFragment() { val URL_SHARING: String by lazy { firebaseRemoteConfig.getString(REMOTE_CONFIG_SHARING_URL) } private fun shareNeosApp() { val intent = Intent().apply { action = Intent.ACTION_SEND putExtra(Intent.EXTRA_TEXT, URL_SHARING) type = "text/plain" } startActivity(Intent.createChooser( intent, resources.getText(R.string.profile_share))) } }
48. Remote Config class ProfileFragment @Inject constructor() : BaseFragment() { val URL_SHARING: String by lazy { firebaseRemoteConfig.getString(REMOTE_CONFIG_SHARING_URL) } private fun shareNeosApp() { val intent = Intent().apply { action = Intent.ACTION_SEND putExtra(Intent.EXTRA_TEXT, URL_SHARING) type = "text/plain" } startActivity(Intent.createChooser( intent, resources.getText(R.string.profile_share))) } }
49. Messaging
50. Messaging As of April 10, 2018, Google has deprecated GCM. The GCM server and client APIs are deprecated and will be removed as soon as April 11, 2019.
51. Authentication
52. Authentication ‣ Easily add sign-in to your Android app with FirebaseUI ‣ Get started with the Firebase SDK
54. ‣ Smart Lock support ‣ Forgot password
55. Authentication implementation 'com.firebaseui:firebase-ui-auth:3.3.1' build.gradle
56. Firestore BÊTA @Module class FirebaseModule { @Singleton @Provides fun provideFirebaseRemoteConfig(): FirebaseRemoteConfig = FirebaseRemoteConfig.getInstance() @Singleton @Provides fun provideFirebaseAuth(): FirebaseAuth = FirebaseAuth.getInstance() }
57. class HomeActivity : BaseActivity() { @Inject lateinit var auth: FirebaseAuth override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) setContentView(R.layout.activity_home) if (auth.currentUser != null) { // Set user properties or welcome back? } else { startActivityForResult( // Get an instance of AuthUI based on the default app AuthUI.getInstance().createSignInIntentBuilder().build(), RC_SIGN_IN ) } } override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) { super.onActivityResult(requestCode, resultCode, data) if (requestCode == RC_SIGN_IN) { val response = IdpResponse.fromResultIntent(data) // Successfully signed in if (resultCode == Activity.RESULT_OK) { Timber.w("Successfully signed in") } else { // Sign in failed if (response == null) { // User pressed back button return } if (response.error!!.errorCode == ErrorCodes.NO_NETWORK) { // Handle this case return } Timber.e(response.error) } } }
58. class HomeActivity : BaseActivity() { @Inject lateinit var auth: FirebaseAuth override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) setContentView(R.layout.activity_home) if (auth.currentUser != null) { // Set user properties or welcome back? } else { startActivityForResult( // Get an instance of AuthUI based on the default app AuthUI.getInstance().createSignInIntentBuilder().build(), RC_SIGN_IN ) } } override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) { super.onActivityResult(requestCode, resultCode, data) if (requestCode == RC_SIGN_IN) { val response = IdpResponse.fromResultIntent(data) // Successfully signed in if (resultCode == Activity.RESULT_OK) { Timber.w("Successfully signed in") } else { // Sign in failed if (response == null) { // User pressed back button return } if (response.error!!.errorCode == ErrorCodes.NO_NETWORK) { // Handle this case return } Timber.e(response.error) } } }
59. class HomeActivity : BaseActivity() { @Inject lateinit var auth: FirebaseAuth override fun onCreate(savedInstanceState: Bundle?) { AndroidInjection.inject(this) super.onCreate(savedInstanceState) setContentView(R.layout.activity_home) if (auth.currentUser != null) { // Set user properties or welcome back? } else { startActivityForResult( // Get an instance of AuthUI based on the default app AuthUI.getInstance().createSignInIntentBuilder().build(), RC_SIGN_IN ) } } override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) { super.onActivityResult(requestCode, resultCode, data) if (requestCode == RC_SIGN_IN) { val response = IdpResponse.fromResultIntent(data) // Successfully signed in if (resultCode == Activity.RESULT_OK) { Timber.w("Successfully signed in") } else { // Sign in failed if (response == null) { // User pressed back button return } if (response.error!!.errorCode == ErrorCodes.NO_NETWORK) { // Handle this case return } Timber.e(response.error) } } }
60. signOutButton.setOnClickListener { v -> AuthUI.getInstance() .signOut(this) .addOnCompleteListener { Timber.d("User is now signed out") } } Authentication
61. Authentication ‣ Migrate from Firebase to your back end # npm install -g firebase-tools # firebase login # firebase init # firebase list # firebase auth:export myexport.csv --format=csv
62. Firestore
63. Firestore BETA
64. Firestore BETA
65. Firestore BETA Collection Documents
66. Firestore BETA @Module class FirebaseModule { @Singleton @Provides fun provideFirebaseRemoteConfig(): FirebaseRemoteConfig = FirebaseRemoteConfig.getInstance() @Singleton @Provides fun provideFirebaseAuth(): FirebaseAuth = FirebaseAuth.getInstance() @Singleton @Provides fun provideFirebaseFirestore(): FirebaseFirestore = FirebaseFirestore.getInstance() }
67. Firestore BETA @Singleton @Component( modules = arrayOf( AndroidSupportInjectionModule::class, ApplicationModule::class, ActivityModule::class, RepositoryModule::class, FirebaseModule::class ) ) interface ApplicationComponent : AndroidInjector<NeosApplication> { @Component.Builder interface Builder { fun build(): ApplicationComponent @BindsInstance fun application(application: Application): Builder } }
68. Firestore BETA @Module class RepositoryModule { @Singleton @Provides fun provideDataRepository(firestore: FirebaseFirestore): DataRepository { return DataRepository(firestore) } }
69. Firestore BETA class DataRepository(val firestore: FirebaseFirestore) { /** * STORES */ fun getStores(): Single<List<StoreDomain>> { return Single.create { firestore.collection("stores") .get() .addOnSuccessListener { query -> it.onSuccess(query.toObjects(StoreDomain::class.java)) } .addOnFailureListener { exception -> it.onError(exception) } } } }
70. Firestore BETA ‣ Structuring Security Rules service cloud.firestore { match /databases/{database}/documents { // Match any document in the 'stores' collection match /stores/{store} { allow read: if <condition>; allow write: if <condition>; } } }
71. Firestore BETA ‣ Structuring Security Rules // Allow read/write access on all documents to any user signed in to the application service cloud.firestore { match /databases/{database}/documents { match /{document=**} { allow read, write: if request.auth.uid != null; } } }
72. Firestore BETA ‣ Structuring Security Rules service cloud.firestore { match /databases/{database}/documents { // A read rule can be divided into get and list rules match /cities/{city} { // Applies to single document read requests allow get: if <condition>; // Applies to queries and collection read requests allow list: if <condition>; } // A write rule can be divided into create, update, and delete rules match /cities/{city} { // Applies to writes to nonexistent documents allow create: if <condition>; // Applies to writes to existing documents allow update: if <condition>; // Applies to delete operations allow delete: if <condition>; } } }
73. Cloud Storage
74. @Module class FirebaseModule { @Singleton @Provides fun provideFirebaseRemoteConfig(): FirebaseRemoteConfig = FirebaseRemoteConfig.getInstance() @Singleton @Provides fun provideFirebaseAuth(): FirebaseAuth = FirebaseAuth.getInstance() @Singleton @Provides fun provideFirebaseFirestore(): FirebaseFirestore = FirebaseFirestore.getInstance() @Singleton @Provides fun provideFirebaseStorage(): FirebaseStorage = FirebaseStorage.getInstance() } Cloud Storage
75. Cloud Storage @Module class RepositoryModule { @Singleton @Provides fun provideDataRepository( firestore: FirebaseFirestore, firebaseStorage: FirebaseStorage ): DataRepository { return DataRepository(firestore, firebaseStorage) } }
76. Cloud Storage class DataRepository( val firestore: FirebaseFirestore, val storage: FirebaseStorage ) { fun getStoreLogoURL() { storage.reference.child("stores/logos/gep_rive_gauche.png") .getDownloadUrl() .addOnSuccessListener { // Emit Single? Download to a file? } .addOnFailureListener { Timber.e(it) } } }
77. Cloud Storage ‣ Using FirebaseUI to download and display images using Glide @GlideModule class MyAppGlideModule : AppGlideModule() { fun registerComponents(context: Context, glide: Glide, registry: Registry) { // Register FirebaseImageLoader to handle StorageReference registry.append( StorageReference::class.java, InputStream::class.java, FirebaseImageLoader.Factory() ) } }
78. Cloud Storage GlideApp.with(this /* context */) .load(storageReference) .into(imageView)
79. Cloud Storage ‣ Structuring Security Rules // Allow read/write access on all documents to any user signed in to the application service firebase.storage { match /b/{bucket}/o { match /{allPaths=**} { allow read, write: if request.auth.uid != null; } } }
80. https://firebase.community/ @renaud_mathieu
81. Cloud Functions BÊTA Scenarios ‣ Notify users when something interesting happens. ‣ Perform Realtime Database sanitization and maintenance. ‣ Execute intensive tasks in the cloud instead of in your app. ‣ Integrate with third-party services and APIs.