Updated gradle (SdkVersion 34),

replaced deprecated 'buildDir',
added (now required) 'buildConfig true',
forced a specific version of Kotlin (to avoid the build error "Duplicate class kotlin.collections.jdk8.CollectionsJDK8Kt found in modules kotlin-stdlib-1.8.22.jar [..]")

app/build.gradle

@@ -1,11 +1,11 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdk 33
+    compileSdk 34
     defaultConfig {
         applicationId "om.sstvencoder"
-        minSdkVersion 21
-        targetSdkVersion 33
+        minSdk 21
+        targetSdk 34
         versionCode 31
         versionName "2.10"
     }
@@ -16,10 +16,13 @@ android {
         }
     }
     namespace 'om.sstvencoder'
+    buildFeatures {
+        buildConfig true
+    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation "androidx.exifinterface:exifinterface:1.3.6"
+    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation "androidx.exifinterface:exifinterface:1.3.7"
 }

build.gradle

@@ -4,11 +4,18 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.4.2'
+        classpath 'com.android.tools.build:gradle:8.5.2'
     }
 }
 
 allprojects {
+    configurations.configureEach {
+        resolutionStrategy.eachDependency { details ->
+            if (details.requested.group == 'org.jetbrains.kotlin') {
+                details.useVersion "1.8.22"
+            }
+        }
+    }
     repositories {
         google()
         mavenCentral()
@@ -16,5 +23,5 @@ allprojects {
 }
 
 tasks.register('clean', Delete) {
-    delete rootProject.buildDir
+    delete rootProject.layout.buildDirectory.get().asFile
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists