Adrián Catalan: Firebase & Android, a Real-Time Match Synced in Heaven

Firebase provides a real-time database and handles authentication among many interesting features. It allows developers to focus on building amazing apps and not worrying about the backend. Through this talk, we will review how to make the most out of this tools in Android, from the first steps, all the way to building an app that synchronize data and authenticates with several major providers, using Firebase.

Transcript

1. Firebase and Android: A Real-Time Match Synced in Heaven Adrián Catalán @ykro
2. REAL-TIME DATABASE
3. https://www.flickr.com/photos/43173596@N00/4475203104
6. AUTHENTICATION https://www.flickr.com/photos/19779889@N00/8479667758/
7. REAL-TIME DATABASE https://www.flickr.com/photos/136688755@N08/21265605624/
8. FIREBASE UI LIBRARY https://www.flickr.com/photos/118103645@N05/2760187752
9. Firebase Let’s create an app
10. https://console.firebase.google.com
11. https://console.firebase.google.com
12. https://console.firebase.google.com/project/android-to-do-list/overview
15. https://console.firebase.google.com/project/android-to-do-list/database/data
16. https://console.firebase.google.com/project/android-to-do-list/database/rules
17. https://console.firebase.google.com/project/android-to-do-list/database/rules
18. Android Adding Firebase to a project
19. <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.bitandik.labs.simplefirebase" > <uses-permission android:name="android.permission.INTERNET" /> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/AndroidManifest.xml AndroidManifest.xml
20. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/AndroidManifest.xml <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.bitandik.labs.simplefirebase" > <uses-permission android:name="android.permission.INTERNET" /> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme" > <activity android:name=".MainActivity" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> AndroidManifest.xml
21. https://github.com/ykro/firebase-minimun-example/blob/master/build.gradle buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:2.2.0-alpha3' classpath 'com.google.gms:google-services:3.0.0' } } build.gradle
22. https://github.com/ykro/firebase-minimun-example/blob/master/build.gradle buildscript { repositories { jcenter() } dependencies { classpath 'com.android.tools.build:gradle:2.2.0-alpha3' classpath 'com.google.gms:google-services:3.0.0' } } build.gradle
23. https://firebase.google.com/docs/android/setup#add_the_sdk
24. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.4.0' compile 'com.google.firebase:firebase-database:9.0.2' } apply plugin: 'com.google.gms.google-services' https://github.com/ykro/firebase-minimun-example/blob/master/app/build.gradle app/build.gradle
25. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:23.4.0' compile 'com.google.firebase:firebase-database:9.0.2' } apply plugin: 'com.google.gms.google-services' https://github.com/ykro/firebase-minimun-example/blob/master/app/build.gradle app/build.gradle
26. https://www.flickr.com/photos/14663031@N07/18671037394/
27. save and retrieve data Minimun example
28. https://gist.github.com/ykro/ca8010e657256a150800
29. https://gist.github.com/ykro/ca8010e657256a150800
30. https://gist.github.com/ykro/ca8010e657256a150800
33. Layout UI elements setup
35. <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/editText" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/txtBtnSend" android:id="@+id/button" android:layout_below="@+id/editText" android:layout_centerHorizontal="true" /> </RelativeLayout> https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/res/layout/activity_main.xml layout/activity_main.xml
36. Save data Writing to the database
37. Work with a reference and can use setValue() and/or push() Writing to the database
38. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String MESSAGE_CHILD = "message"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); database = FirebaseDatabase.getInstance(); DatabaseReference messageReference = database.getReference().child(MESSAGE_CHILD); messageReference.setValue("Hello, World!"); ... } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
39. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String MESSAGE_CHILD = "message"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); database = FirebaseDatabase.getInstance(); DatabaseReference messageReference = database.getReference().child(MESSAGE_CHILD); messageReference.setValue("Hello, World!"); ... } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
40. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String MESSAGE_CHILD = "message"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); database = FirebaseDatabase.getInstance(); DatabaseReference messageReference = database.getReference().child(MESSAGE_CHILD); messageReference.setValue("Hello, World!"); ... } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
42. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String WORDS_CHILD = "words"; @Override protected void onCreate(Bundle savedInstanceState) { ... final Button btn = (Button)findViewById(R.id.button); final EditText editText = (EditText)findViewById(R.id.editText); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { DatabaseReference newElementReference = database.getReference().child(WORDS_CHILD).push(); newElementReference.setValue(editText.getText().toString()); editText.setText(""); } }); } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
43. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String WORDS_CHILD = "words"; @Override protected void onCreate(Bundle savedInstanceState) { ... final Button btn = (Button)findViewById(R.id.button); final EditText editText = (EditText)findViewById(R.id.editText); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { DatabaseReference newElementReference = database.getReference().child(WORDS_CHILD).push(); newElementReference.setValue(editText.getText().toString()); editText.setText(""); } }); } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
44. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String WORDS_CHILD = "words"; @Override protected void onCreate(Bundle savedInstanceState) { ... final Button btn = (Button)findViewById(R.id.button); final EditText editText = (EditText)findViewById(R.id.editText); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { DatabaseReference newElementReference = database.getReference().child(WORDS_CHILD).push(); newElementReference.setValue(editText.getText().toString()); editText.setText(""); } }); } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
45. public class MainActivity extends AppCompatActivity { private FirebaseDatabase database; private String WORDS_CHILD = "words"; @Override protected void onCreate(Bundle savedInstanceState) { ... final Button btn = (Button)findViewById(R.id.button); final EditText editText = (EditText)findViewById(R.id.editText); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { DatabaseReference newElementReference = database.getReference().child(WORDS_CHILD).push(); newElementReference.setValue(editText.getText().toString()); editText.setText(""); } }); } } https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java MainActivity.java
47. Retrieve data Reading from the database
48. Work with a reference and add child or value event listeners to it Reading from the database
49. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java private static final String TAG = MainActivity.class.getSimpleName(); public void showMessage(String msg) { Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show(); Log.d(TAG, "Value is: " + msg); } MainActivity.java
50. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... messageReference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { if (snapshot.getValue() != null) { String value = snapshot.getValue(String.class); showMessage(value); } } @Override public void onCancelled(DatabaseError error) { Log.w(TAG, "Failed to read value.", error.toException()); } }); } MainActivity.java
51. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... messageReference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { if (snapshot.getValue() != null) { String value = snapshot.getValue(String.class); showMessage(value); } } @Override public void onCancelled(DatabaseError error) { Log.w(TAG, "Failed to read value.", error.toException()); } }); } MainActivity.java
52. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... messageReference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { if (snapshot.getValue() != null) { String value = snapshot.getValue(String.class); showMessage(value); } } @Override public void onCancelled(DatabaseError error) { Log.w(TAG, "Failed to read value.", error.toException()); } }); } MainActivity.java
53. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... messageReference.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot snapshot) { if (snapshot.getValue() != null) { String value = snapshot.getValue(String.class); showMessage(value); } } @Override public void onCancelled(DatabaseError error) { Log.w(TAG, "Failed to read value.", error.toException()); } }); } MainActivity.java
54. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... DatabaseReference wordsReference = database.getReference().child(WORDS_CHILD); wordsReference.addChildEventListener(new ChildEventListener() { @Override public void onChildAdded(DataSnapshot dataSnapshot, String s) { showMessage(dataSnapshot.getValue().toString()); } ... }); } MainActivity.java
55. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... DatabaseReference wordsReference = database.getReference().child(WORDS_CHILD); wordsReference.addChildEventListener(new ChildEventListener() { @Override public void onChildAdded(DataSnapshot dataSnapshot, String s) { showMessage(dataSnapshot.getValue().toString()); } ... }); } MainActivity.java
56. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... DatabaseReference wordsReference = database.getReference().child(WORDS_CHILD); wordsReference.addChildEventListener(new ChildEventListener() { @Override public void onChildAdded(DataSnapshot dataSnapshot, String s) { showMessage(dataSnapshot.getValue().toString()); } ... }); } MainActivity.java
57. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... wordsReference.addChildEventListener(new ChildEventListener() { ... @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) {} @Override public void onChildRemoved(DataSnapshot dataSnapshot) {} @Override public void onChildMoved(DataSnapshot dataSnapshot, String s) {} @Override public void onCancelled(DatabaseError databaseError) { Log.w(TAG, "Failed to read value.", databaseError.toException()); } }); } MainActivity.java
58. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... wordsReference.addChildEventListener(new ChildEventListener() { ... @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) {} @Override public void onChildRemoved(DataSnapshot dataSnapshot) {} @Override public void onChildMoved(DataSnapshot dataSnapshot, String s) {} @Override public void onCancelled(DatabaseError databaseError) { Log.w(TAG, "Failed to read value.", databaseError.toException()); } }); } MainActivity.java
59. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... wordsReference.addChildEventListener(new ChildEventListener() { ... @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) {} @Override public void onChildRemoved(DataSnapshot dataSnapshot) {} @Override public void onChildMoved(DataSnapshot dataSnapshot, String s) {} @Override public void onCancelled(DatabaseError databaseError) { Log.w(TAG, "Failed to read value.", databaseError.toException()); } }); } MainActivity.java
60. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... wordsReference.addChildEventListener(new ChildEventListener() { ... @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) {} @Override public void onChildRemoved(DataSnapshot dataSnapshot) {} @Override public void onChildMoved(DataSnapshot dataSnapshot, String s) {} @Override public void onCancelled(DatabaseError databaseError) { Log.w(TAG, "Failed to read value.", databaseError.toException()); } }); } MainActivity.java
61. https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/java/com/bitandik/labs/simplefirebase/MainActivity.java @Override protected void onCreate(Bundle savedInstanceState) { ... wordsReference.addChildEventListener(new ChildEventListener() { ... @Override public void onChildChanged(DataSnapshot dataSnapshot, String s) {} @Override public void onChildRemoved(DataSnapshot dataSnapshot) {} @Override public void onChildMoved(DataSnapshot dataSnapshot, String s) {} @Override public void onCancelled(DatabaseError databaseError) { Log.w(TAG, "Failed to read value.", databaseError.toException()); } }); } MainActivity.java
62. https://www.flickr.com/photos/124327550@N04/19330213941
63. TO-DO LIST APP https://www.flickr.com/photos/19779889@N00/8479667758/
65. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:24.1.1' compile 'com.android.support:design:24.1.1' compile 'com.android.support:recyclerview-v7:24.1.1' apt 'com.jakewharton:butterknife-compiler:8.2.1' compile 'com.jakewharton:butterknife:8.2.1' compile 'com.google.firebase:firebase-database:9.0.2' compile 'com.firebaseui:firebase-ui-database:0.4.3' } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/build.gradle app/build.gradle
66. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:24.1.1' compile 'com.android.support:design:24.1.1' compile 'com.android.support:recyclerview-v7:24.1.1' apt 'com.jakewharton:butterknife-compiler:8.2.1' compile 'com.jakewharton:butterknife:8.2.1' compile 'com.google.firebase:firebase-database:9.0.2' compile 'com.firebaseui:firebase-ui-database:0.4.3' } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/build.gradle app/build.gradle
67. Layout UI elements setup
69. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_vertical_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".activities.MainActivity"> <android.support.v7.widget.RecyclerView android:id="@+id/recycler_view_items" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="2" android:scrollbars="vertical" android:layout_above="@+id/txtInputWrapper" /> ... </RelativeLayout> https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/res/layout/activity_main.xml layout/activity_main.xml
70. <RelativeLayout > <android.support.design.widget.TextInputLayout android:id="@+id/txtInputWrapper" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_toLeftOf="@+id/fab" android:layout_toStartOf="@+id/fab"> <EditText android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="@string/main.message.addelement" android:id="@+id/editTextItem" /> </android.support.design.widget.TextInputLayout> <android.support.design.widget.FloatingActionButton android:id="@+id/fab" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_add_white_36dp" android:layout_alignBottom="@+id/txtInputWrapper" android:layout_alignParentRight="true" android:layout_alignParentEnd="true" /> </RelativeLayout> https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/res/layout/activity_main.xml layout/activity_main.xml
71. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_margin="4dp" android:layout_width="match_parent" android:layout_height="wrap_content"> <LinearLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_margin="@dimen/activity_horizontal_margin" android:layout_weight="1"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="Large Text" android:id="@+id/txtItem" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceMedium" android:text="Medium Text" android:id="@+id/txtUser" /> </LinearLayout> https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/res/layout/row.xml layout/row.xml
72. <LinearLayout> ... <ImageView android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginRight="@dimen/activity_horizontal_margin" android:id="@+id/imgDone" android:src="@drawable/ic_done_black_36dp" android:visibility="invisible" /> </LinearLayout> https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/res/layout/row.xml layout/row.xml
73. Model Plain Old Java Object
75. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/models/ToDoItem.java public class ToDoItem { private String item; private String username; private boolean completed; public ToDoItem(){ } public ToDoItem(String item, String username) { this.username = username; this.item = item; this.completed = false; } ... //getters & setters } models/ToDoItem.java
76. moar code! Application class, Adapter & RecyclerView
77. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); } public DatabaseReference getItemsReference() { return itemsReference; } } ToDoApplication.java
78. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); } public DatabaseReference getItemsReference() { return itemsReference; } }
79. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); } public DatabaseReference getItemsReference() { return itemsReference; } } ToDoApplication.java
80. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); } public DatabaseReference getItemsReference() { return itemsReference; } } ToDoApplication.java
81. <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.bitandik.labs.todolist"> <uses-permission android:name="android.permission.INTERNET" /> <application android:name=".ToDoApplication" ...> </application> </manifest> https://github.com/ykro/firebase-minimun-example/blob/master/app/src/main/AndroidManifest.xml AndroidManifest.xml
82. FIREBASE UI LIBRARY https://www.flickr.com/photos/118103645@N05/2760187752
83. We need a ViewHolder and override methods to populate and create*. • populateViewHolder • onCreateViewHolder RecyclerAdapter
84. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java class ToDoItemViewHolder extends RecyclerView.ViewHolder { @BindView(R.id.txtItem) TextView txtItem; @BindView(R.id.txtUser) TextView txtUser; @BindView(R.id.imgDone) ImageView imgDone; public ToDoItemViewHolder(View itemView) { super(itemView); ButterKnife.bind(this, itemView); } } adapters/ToDoItemsRecyclerAdapter.jav a
85. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java class ToDoItemViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener { public ToDoItemViewHolder(View itemView) { ... itemView.setOnClickListener(this); itemView.setOnLongClickListener(this); } } adapters/ToDoItemsRecyclerAdapter.jav a
86. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override public void onClick(View view) { int position = getAdapterPosition(); ToDoItem currentItem = (ToDoItem)getItem(position); DatabaseReference reference = getRef(position); boolean completed = !currentItem.isCompleted(); currentItem.setCompleted(completed); Map<String, Object> updates = new HashMap<String, Object>(); updates.put("completed", completed); reference.updateChildren(updates); } adapters/ToDoItemsRecyclerAdapter.jav a
87. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override public void onClick(View view) { int position = getAdapterPosition(); ToDoItem currentItem = (ToDoItem)getItem(position); DatabaseReference reference = getRef(position); boolean completed = !currentItem.isCompleted(); currentItem.setCompleted(completed); Map<String, Object> updates = new HashMap<String, Object>(); updates.put("completed", completed); reference.updateChildren(updates); } adapters/ToDoItemsRecyclerAdapter.jav a
88. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override public void onClick(View view) { int position = getAdapterPosition(); ToDoItem currentItem = (ToDoItem)getItem(position); DatabaseReference reference = getRef(position); boolean completed = !currentItem.isCompleted(); currentItem.setCompleted(completed); Map<String, Object> updates = new HashMap<String, Object>(); updates.put("completed", completed); reference.updateChildren(updates); } adapters/ToDoItemsRecyclerAdapter.jav a
89. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override public void onClick(View view) { int position = getAdapterPosition(); ToDoItem currentItem = (ToDoItem)getItem(position); DatabaseReference reference = getRef(position); boolean completed = !currentItem.isCompleted(); currentItem.setCompleted(completed); Map<String, Object> updates = new HashMap<String, Object>(); updates.put("completed", completed); reference.updateChildren(updates); } adapters/ToDoItemsRecyclerAdapter.jav a
90. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override public void onClick(View view) { int position = getAdapterPosition(); ToDoItem currentItem = (ToDoItem)getItem(position); DatabaseReference reference = getRef(position); boolean completed = !currentItem.isCompleted(); currentItem.setCompleted(completed); Map<String, Object> updates = new HashMap<String, Object>(); updates.put("completed", completed); reference.updateChildren(updates); } adapters/ToDoItemsRecyclerAdapter.jav a
91. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java adapters/ToDoItemsRecyclerAdapter.jav a @Override public boolean onLongClick(View view) { int position = getAdapterPosition(); DatabaseReference reference = getRef(position); reference.removeValue(); return true; }
92. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java public class ToDoItemsRecyclerAdapter extends FirebaseRecyclerAdapter<ToDoItem, ToDoItemsRecyclerAdapter.ToDoItemViewHolder> { public ToDoItemsRecyclerAdapter(int modelLayout, DatabaseReference ref) { super(ToDoItem.class, modelLayout, ToDoItemsRecyclerAdapter.ToDoItemViewHolder.class, ref); } @Override public ToDoItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { ViewGroup view = (ViewGroup) LayoutInflater.from(parent.getContext()) .inflate(mModelLayout, parent, false); return new ToDoItemViewHolder(view); } ... } adapters/ToDoItemsRecyclerAdapter.jav a
93. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java adapters/ToDoItemsRecyclerAdapter.jav a public class ToDoItemsRecyclerAdapter extends FirebaseRecyclerAdapter<ToDoItem, ToDoItemsRecyclerAdapter.ToDoItemViewHolder> { public ToDoItemsRecyclerAdapter(int modelLayout, DatabaseReference ref) { super(ToDoItem.class, modelLayout, ToDoItemsRecyclerAdapter.ToDoItemViewHolder.class, ref); } @Override public ToDoItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { ViewGroup view = (ViewGroup) LayoutInflater.from(parent.getContext()) .inflate(mModelLayout, parent, false); return new ToDoItemViewHolder(view); } ... }
94. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java public class ToDoItemsRecyclerAdapter extends FirebaseRecyclerAdapter<ToDoItem, ToDoItemsRecyclerAdapter.ToDoItemViewHolder> { public ToDoItemsRecyclerAdapter(int modelLayout, DatabaseReference ref) { super(ToDoItem.class, modelLayout, ToDoItemsRecyclerAdapter.ToDoItemViewHolder.class, ref); } @Override public ToDoItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { ViewGroup view = (ViewGroup) LayoutInflater.from(parent.getContext()) .inflate(mModelLayout, parent, false); return new ToDoItemViewHolder(view); } ... } adapters/ToDoItemsRecyclerAdapter.jav a
95. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override protected void populateViewHolder(ToDoItemViewHolder holder, ToDoItem item, int position) { String itemDescription = item.getItem(); String username = item.getUsername(); holder.txtItem.setText(itemDescription); holder.txtUser.setText(username); if (item.isCompleted()) { holder.imgDone.setVisibility(View.VISIBLE); } else { holder.imgDone.setVisibility(View.INVISIBLE); } } adapters/ToDoItemsRecyclerAdapter.jav a
96. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override protected void populateViewHolder(ToDoItemViewHolder holder, ToDoItem item, int position) { String itemDescription = item.getItem(); String username = item.getUsername(); holder.txtItem.setText(itemDescription); holder.txtUser.setText(username); if (item.isCompleted()) { holder.imgDone.setVisibility(View.VISIBLE); } else { holder.imgDone.setVisibility(View.INVISIBLE); } } adapters/ToDoItemsRecyclerAdapter.jav a
97. https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/adapters/ToDoItemsRecyclerAdapter.java @Override protected void populateViewHolder(ToDoItemViewHolder holder, ToDoItem item, int position) { String itemDescription = item.getItem(); String username = item.getUsername(); holder.txtItem.setText(itemDescription); holder.txtUser.setText(username); if (item.isCompleted()) { holder.imgDone.setVisibility(View.VISIBLE); } else { holder.imgDone.setVisibility(View.INVISIBLE); } } adapters/ToDoItemsRecyclerAdapter.jav a
98. Setup username, setup RecyclerView and add item when button is clicked MainActivity
99. public class MainActivity extends AppCompatActivity { @BindView(R.id.recycler_view_items) RecyclerView recyclerView; @BindView(R.id.editTextItem) EditText editTextItem; private DatabaseReference databaseReference; private FirebaseRecyclerAdapter adapter; ... } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
100. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); setupUsername(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); setTitle(username); ToDoApplication app = (ToDoApplication)getApplicationContext(); databaseReference = app.getItemsReference(); adapter = new ToDoItemsRecyclerAdapter(R.layout.row, databaseReference); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(adapter); } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
101. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); setupUsername(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); setTitle(username); ToDoApplication app = (ToDoApplication)getApplicationContext(); databaseReference = app.getItemsReference(); adapter = new ToDoItemsRecyclerAdapter(R.layout.row, databaseReference); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(adapter); } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
102. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); setupUsername(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); setTitle(username); ToDoApplication app = (ToDoApplication)getApplicationContext(); databaseReference = app.getItemsReference(); adapter = new ToDoItemsRecyclerAdapter(R.layout.row, databaseReference); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(adapter); } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
103. private void setupUsername() { SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); if (username == null) { Random r = new Random(); username = "AndroidUser" + r.nextInt(100000); prefs.edit().putString("username", username).commit(); } } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
104. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); setupUsername(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); setTitle(username); ToDoApplication app = (ToDoApplication)getApplicationContext(); databaseReference = app.getItemsReference(); adapter = new ToDoItemsRecyclerAdapter(R.layout.row, databaseReference); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(adapter); } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
105. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ButterKnife.bind(this); setupUsername(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); setTitle(username); ToDoApplication app = (ToDoApplication)getApplicationContext(); databaseReference = app.getItemsReference(); adapter = new ToDoItemsRecyclerAdapter(R.layout.row, databaseReference); recyclerView.setLayoutManager(new LinearLayoutManager(this)); recyclerView.setAdapter(adapter); } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
106. @OnClick(R.id.fab) public void addToDoItem() { SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); String itemText = editTextItem.getText().toString(); editTextItem.setText(""); InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); if (!itemText.isEmpty()) { ToDoItem toDoItem = new ToDoItem(itemText.trim(), username); databaseReference.push().setValue(toDoItem); } } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
107. @OnClick(R.id.fab) public void addToDoItem() { SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); String itemText = editTextItem.getText().toString(); editTextItem.setText(""); InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); if (!itemText.isEmpty()) { ToDoItem toDoItem = new ToDoItem(itemText.trim(), username); databaseReference.push().setValue(toDoItem); } } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
108. @OnClick(R.id.fab) public void addToDoItem() { SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); String itemText = editTextItem.getText().toString(); editTextItem.setText(""); InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); if (!itemText.isEmpty()) { ToDoItem toDoItem = new ToDoItem(itemText.trim(), username); databaseReference.push().setValue(toDoItem); } } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
109. @OnClick(R.id.fab) public void addToDoItem() { SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); String username = prefs.getString("username", null); String itemText = editTextItem.getText().toString(); editTextItem.setText(""); InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Activity.INPUT_METHOD_SERVICE); inputMethodManager.hideSoftInputFromWindow(getCurrentFocus().getWindowToken(), 0); if (!itemText.isEmpty()) { ToDoItem toDoItem = new ToDoItem(itemText.trim(), username); databaseReference.push().setValue(toDoItem); } } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/MainActivity.java activities/MainActivity.java
111. ADDING AUTH https://www.flickr.com/photos/68759973@N00/27010156131/
115. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:24.1.1' compile 'com.android.support:design:24.1.1' compile 'com.android.support:recyclerview-v7:24.1.1' apt 'com.jakewharton:butterknife-compiler:8.2.1' compile 'com.jakewharton:butterknife:8.2.1' compile 'com.google.firebase:firebase-database:9.0.2' compile 'com.firebaseui:firebase-ui-database:0.4.3' } https://github.com/ykro/firebase-todolist-noauth/blob/master/app/build.gradle app/build.gradle
116. dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) testCompile 'junit:junit:4.12' compile 'com.android.support:appcompat-v7:24.1.1' compile 'com.android.support:design:24.1.1' compile 'com.android.support:recyclerview-v7:24.1.1' apt 'com.jakewharton:butterknife-compiler:8.2.1' compile 'com.jakewharton:butterknife:8.2.1' compile 'com.google.firebase:firebase-database:9.0.2' compile 'com.firebaseui:firebase-ui:0.4.3' } https://github.com/ykro/firebase-todolist/blob/master/app/build.gradle app/build.gradle
117. buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' resValue "string", "facebook_application_id", project.property('facebook_application_id') } debug { resValue "string", "facebook_application_id", project.property('facebook_application_id') } } https://github.com/ykro/firebase-todolist/blob/master/app/build.gradle app/build.gradle
118. facebook_application_id=1234567890123456 gradle.properties
119. https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; private FirebaseAuth auth; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); auth = FirebaseAuth.getInstance(); } //getters } ToDoApplication.java
120. https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; private FirebaseAuth auth; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); auth = FirebaseAuth.getInstance(); } //getters } ToDoApplication.java
121. https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/ToDoApplication.java public class ToDoApplication extends Application { private String ITEMS_CHILD_NAME = "items"; private DatabaseReference itemsReference; private FirebaseAuth auth; @Override public void onCreate() { super.onCreate(); FirebaseDatabase database = FirebaseDatabase.getInstance(); database.setPersistenceEnabled(true); itemsReference = database.getReference(ITEMS_CHILD_NAME); auth = FirebaseAuth.getInstance(); } //getters } ToDoApplication.java
122. public class LoginActivity extends AppCompatActivity { private FirebaseAuth auth; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); ToDoApplication app = (ToDoApplication)getApplicationContext(); auth = app.getAuth(); doLogin(); } ... } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
123. public class LoginActivity extends AppCompatActivity { private FirebaseAuth auth; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); ToDoApplication app = (ToDoApplication)getApplicationContext(); auth = app.getAuth(); doLogin(); } ... } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
124. public class LoginActivity extends AppCompatActivity { private FirebaseAuth auth; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); ToDoApplication app = (ToDoApplication)getApplicationContext(); auth = app.getAuth(); doLogin(); } ... } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
125. private void doLogin() { FirebaseUser currentUser = auth.getCurrentUser(); if (currentUser != null) { String username = currentUser.getDisplayName(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); prefs.edit().putString("username", username).commit(); Intent i = new Intent(this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(i); } else { ... } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
126. private void doLogin() { FirebaseUser currentUser = auth.getCurrentUser(); if (currentUser != null) { String username = currentUser.getDisplayName(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); prefs.edit().putString("username", username).commit(); Intent i = new Intent(this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(i); } else { ... } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
127. private void doLogin() { FirebaseUser currentUser = auth.getCurrentUser(); if (currentUser != null) { String username = currentUser.getDisplayName(); SharedPreferences prefs = getApplication().getSharedPreferences("ToDoPrefs", 0); prefs.edit().putString("username", username).commit(); Intent i = new Intent(this, MainActivity.class); i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); startActivity(i); } else { ... } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
128. private void doLogin() { FirebaseUser currentUser = auth.getCurrentUser(); if (currentUser != null) { ... } else { startActivityForResult( AuthUI.getInstance() .createSignInIntentBuilder() .setProviders( AuthUI.EMAIL_PROVIDER, AuthUI.GOOGLE_PROVIDER, AuthUI.FACEBOOK_PROVIDER) .build(), RC_SIGN_IN); } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
129. private void doLogin() { FirebaseUser currentUser = auth.getCurrentUser(); if (currentUser != null) { ... } else { startActivityForResult( AuthUI.getInstance() .createSignInIntentBuilder() .setProviders( AuthUI.EMAIL_PROVIDER, AuthUI.GOOGLE_PROVIDER, AuthUI.FACEBOOK_PROVIDER) .build(), RC_SIGN_IN); } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
130. @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == RC_SIGN_IN) { if (resultCode == RESULT_OK) { doLogin(); finish(); } } } https://github.com/ykro/firebase-todolist/blob/master/app/src/main/java/com/bitandik/labs/todolist/activities/LoginActivity.java activities/LoginActivity.java
134. Database • Attach/Detach child event listener and modify adapter dataset. Auth • Design layout • Handle authentication flow Without Firebase-UI
135. Store uid under each item, check if it’s a new node or if owner is modifying Security rules
136. https://console.firebase.google.com/project/android-to-do-list/database/rules https://gist.github.com/ykro/63197874df603a13089e8651ba79a039
137. https://www.flickr.com/photos/43173596@N00/4475203104
140. Firebase and Android: A Real-Time Match Synced in Heaven Adrián Catalán @ykro