gradle: fix compat issues

app/build.gradle

@@ -1,14 +1,15 @@
 plugins {
     id 'com.android.application'
     id 'kotlin-android'
+    id 'kotlin-kapt'
 }
 
 android {
     compileSdk 31
 
     defaultConfig {
-        applicationId "world.whatever.task_roomdb"
-        minSdk 29
+        applicationId "cz.utb.fai.roomdemo"
+        minSdk 23
         targetSdk 31
         versionCode 1
         versionName "1.0"
@@ -32,12 +33,36 @@ android {
 }
 
 dependencies {
+    implementation "androidx.appcompat:appcompat:$rootProject.appCompatVersion"
+    implementation "androidx.activity:activity-ktx:$rootProject.activityVersion"
 
-    implementation 'androidx.core:core-ktx:1.7.0'
-    implementation 'androidx.appcompat:appcompat:1.3.1'
-    implementation 'com.google.android.material:material:1.4.0'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
-    testImplementation 'junit:junit:4.+'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    // Dependencies for working with Architecture components
+    // You'll probably have to update the version numbers in build.gradle (Project)
+
+    // Room components
+    implementation "androidx.room:room-ktx:$rootProject.roomVersion"
+    kapt "androidx.room:room-compiler:$rootProject.roomVersion"
+    androidTestImplementation "androidx.room:room-testing:$rootProject.roomVersion"
+
+    // Lifecycle components
+    implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$rootProject.lifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:$rootProject.lifecycleVersion"
+    implementation "androidx.lifecycle:lifecycle-common-java8:$rootProject.lifecycleVersion"
+
+    // Kotlin components
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.5.0"
+    api "org.jetbrains.kotlinx:kotlinx-coroutines-core:$rootProject.coroutines"
+    api "org.jetbrains.kotlinx:kotlinx-coroutines-android:$rootProject.coroutines"
+
+    // UI
+    implementation "androidx.constraintlayout:constraintlayout:$rootProject.constraintLayoutVersion"
+    implementation "com.google.android.material:material:$rootProject.materialVersion"
+
+    // Testing
+    testImplementation "junit:junit:$rootProject.junitVersion"
+    androidTestImplementation "androidx.arch.core:core-testing:$rootProject.coreTestingVersion"
+    androidTestImplementation ("androidx.test.espresso:espresso-core:$rootProject.espressoVersion", {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    androidTestImplementation "androidx.test.ext:junit:$rootProject.androidxJunitVersion"
 }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:7.0.3"
+        classpath "com.android.tools.build:gradle:7.0.2"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.31"
 
         // NOTE: Do not place your application dependencies here; they belong
@@ -15,4 +15,19 @@ buildscript {
 
 task clean(type: Delete) {
     delete rootProject.buildDir
+}
+
+ext {
+    activityVersion = '1.2.3'
+    appCompatVersion = '1.3.0'
+    constraintLayoutVersion = '2.0.4'
+    coreTestingVersion = '2.1.0'
+    coroutines = '1.5.0'
+    lifecycleVersion = '2.3.1'
+    materialVersion = '1.3.0'
+    roomVersion = '2.3.0'
+    // testing
+    junitVersion = '4.13.2'
+    espressoVersion = '3.1.0'
+    androidxJunitVersion = '1.1.2'
 }