Updated Gradle plugin version, Gradle version and Firebase libraries.

app/build.gradle

@@ -7,13 +7,13 @@ android {
         exclude 'META-INF/NOTICE'
     }
 
-    compileSdkVersion 21
-    buildToolsVersion "21.1.1"
+    compileSdkVersion 24
+    buildToolsVersion "24.0.1"
 
     defaultConfig {
         applicationId "com.firebase.androidchat"
-        minSdkVersion 10
-        targetSdkVersion 21
+        minSdkVersion 17
+        targetSdkVersion 24
         versionCode 1
         versionName "1.0"
     }
@@ -27,5 +27,8 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.firebase:firebase-client-android:2.0.3+'
+    compile 'com.google.firebase:firebase-database:9.4.0'
 }
+
+
+apply plugin: 'com.google.gms.google-services'

app/src/main/java/com/firebase/androidchat/ChatApplication.java

@@ -1,6 +1,6 @@
 package com.firebase.androidchat;
 
-import com.firebase.client.Firebase;
+import com.google.firebase.FirebaseApp;
 
 /**
  * @author Jenny Tong (mimming)
@@ -12,6 +12,6 @@ public class ChatApplication extends android.app.Application {
     @Override
     public void onCreate() {
         super.onCreate();
-        Firebase.setAndroidContext(this);
+        //FirebaseApp.setAndroidContext(this);
     }
 }

app/src/main/java/com/firebase/androidchat/ChatListAdapter.java

@@ -5,7 +5,7 @@
 import android.view.View;
 import android.widget.TextView;
 
-import com.firebase.client.Query;
+import com.google.firebase.database.Query;
 
 /**
  * @author greg

app/src/main/java/com/firebase/androidchat/FirebaseListAdapter.java

@@ -7,10 +7,10 @@
 import android.view.ViewGroup;
 import android.widget.BaseAdapter;
 
-import com.firebase.client.ChildEventListener;
-import com.firebase.client.DataSnapshot;
-import com.firebase.client.FirebaseError;
-import com.firebase.client.Query;
+import com.google.firebase.database.ChildEventListener;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.Query;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -134,7 +134,7 @@ public void onChildMoved(DataSnapshot dataSnapshot, String previousChildName) {
             }
 
             @Override
-            public void onCancelled(FirebaseError firebaseError) {
+            public void onCancelled(DatabaseError firebaseError) {
                 Log.e("FirebaseListAdapter", "Listen was cancelled, no more updates will occur");
             }
 

app/src/main/java/com/firebase/androidchat/MainActivity.java

@@ -12,10 +12,11 @@
 import android.widget.TextView;
 import android.widget.Toast;
 
-import com.firebase.client.DataSnapshot;
-import com.firebase.client.Firebase;
-import com.firebase.client.FirebaseError;
-import com.firebase.client.ValueEventListener;
+import com.google.firebase.database.DataSnapshot;
+import com.google.firebase.database.FirebaseDatabase;
+import com.google.firebase.database.DatabaseReference;
+import com.google.firebase.database.DatabaseError;
+import com.google.firebase.database.ValueEventListener;
 
 import java.util.Random;
 
@@ -24,8 +25,10 @@ public class MainActivity extends ListActivity {
     // TODO: change this to your own Firebase URL
     private static final String FIREBASE_URL = "https://android-chat.firebaseio-demo.com";
 
+
     private String mUsername;
-    private Firebase mFirebaseRef;
+    private FirebaseDatabase mDatabase;
+    private DatabaseReference mFirebaseRef;
     private ValueEventListener mConnectedListener;
     private ChatListAdapter mChatListAdapter;
 
@@ -39,8 +42,9 @@ protected void onCreate(Bundle savedInstanceState) {
 
         setTitle("Chatting as " + mUsername);
 
-        // Setup our Firebase mFirebaseRef
-        mFirebaseRef = new Firebase(FIREBASE_URL).child("chat");
+        mDatabase = FirebaseDatabase.getInstance();
+        mFirebaseRef = mDatabase.getReference("message");
+
 
         // Setup our input methods. Enter key on the keyboard or pushing the send button
         EditText inputText = (EditText) findViewById(R.id.messageInput);
@@ -69,7 +73,7 @@ public void onStart() {
         // Setup our view and list adapter. Ensure it scrolls to the bottom as data changes
         final ListView listView = getListView();
         // Tell our list adapter that we only want 50 messages at a time
-        mChatListAdapter = new ChatListAdapter(mFirebaseRef.limit(50), this, R.layout.chat_message, mUsername);
+        mChatListAdapter = new ChatListAdapter(mFirebaseRef.limitToLast(50), this, R.layout.chat_message, mUsername);
         listView.setAdapter(mChatListAdapter);
         mChatListAdapter.registerDataSetObserver(new DataSetObserver() {
             @Override
@@ -92,7 +96,7 @@ public void onDataChange(DataSnapshot dataSnapshot) {
             }
 
             @Override
-            public void onCancelled(FirebaseError firebaseError) {
+            public void onCancelled(DatabaseError dbError) {
                 // No-op
             }
         });

build.gradle

@@ -4,7 +4,8 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.0.0'
+        classpath 'com.android.tools.build:gradle:2.2.0-beta1'
+        classpath 'com.google.gms:google-services:3.0.0'
     }
 }
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Dec 05 16:24:11 PST 2014
+#Mon Aug 15 11:16:16 PDT 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip