Bumps versions update

constraint-layout-start/app/build.gradle

@@ -1,12 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.2"
+    compileSdkVersion 31
+    buildToolsVersion "30.0.2"
     defaultConfig {
         applicationId "com.google.googleio"
         minSdkVersion 22
-        targetSdkVersion 29
+        targetSdkVersion 31
         versionCode 1
         versionName "1.0"
     }
@@ -20,7 +20,7 @@ android {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    testImplementation 'junit:junit:4.12'
+    testImplementation 'junit:junit:4.13.2'
 
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.android.support.constraint:constraint-layout:2.0.4'
 }

constraint-layout-start/app/src/main/AndroidManifest.xml

@@ -25,7 +25,8 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         tools:ignore="AllowBackup,GoogleAppIndexingWarning">
-        <activity android:name=".MainActivity" >
+        <activity android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 

constraint-layout-start/build.gradle

@@ -2,14 +2,14 @@
 
 buildscript {
     repositories {
-        jcenter()
+        mavenCentral()
         maven {
             url 'https://maven.google.com/'
             name 'Google'
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'com.android.tools.build:gradle:7.0.4'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -18,7 +18,7 @@ buildscript {
 
 allprojects {
     repositories {
-        jcenter()
+        mavenCentral()
         maven {
             url 'https://maven.google.com/'
             name 'Google'

constraint-layout-start/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-5.6.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip