starting-point AndroidX

app/build.gradle

@@ -5,18 +5,18 @@ repositories {
     flatDir {
         dirs 'libs'
     }
+    mavenCentral()
 }
 
 android {
-    compileSdkVersion 24
-    buildToolsVersion "24.0.1"
-
+    compileSdkVersion 31
     defaultConfig {
         applicationId "com.google.firebase.udacity.friendlychat"
         minSdkVersion 16
-        targetSdkVersion 24
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
+        multiDexEnabled true
     }
     buildTypes {
         release {
@@ -32,12 +32,12 @@ android {
 }
 
 dependencies {
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    testCompile 'junit:junit:4.12'
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    testImplementation 'junit:junit:4.13.2'
 
-    compile 'com.android.support:design:24.2.0'
-    compile 'com.android.support:appcompat-v7:24.2.0'
+    implementation 'com.google.android.material:material:1.5.0'
+    implementation 'androidx.appcompat:appcompat:1.4.1'
 
     // Displaying images
-    compile 'com.github.bumptech.glide:glide:3.6.1'
+    implementation 'com.github.bumptech.glide:glide:4.12.0'
 }

app/src/main/AndroidManifest.xml

@@ -8,7 +8,8 @@
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name="com.google.firebase.udacity.friendlychat.MainActivity">
+        <activity android:name="com.google.firebase.udacity.friendlychat.MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

app/src/main/java/com/google/firebase/udacity/friendlychat/MainActivity.java

@@ -16,7 +16,7 @@
 package com.google.firebase.udacity.friendlychat;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.text.Editable;
 import android.text.InputFilter;
 import android.text.TextWatcher;

build.gradle

@@ -2,11 +2,11 @@
 
 buildscript {
     repositories {
-        jcenter()
-        mavenLocal()
+        google()
+        mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.2'
+        classpath 'com.android.tools.build:gradle:7.0.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,8 +15,8 @@ buildscript {
 
 allprojects {
     repositories {
-        jcenter()
-        mavenLocal()
+        google()
+        mavenCentral()
     }
 }
 

gradle.properties

@@ -15,4 +15,6 @@
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
-# org.gradle.parallel=true
+# org.gradle.parallel=true
+android.enableJetifier=true
+android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip