I have an old Android application (full Gradle project) built using legacy android.support dependencies (pre-AndroidX). The goal is to make the app compile and run successfully on the latest version of Android Studio (Koala / Ladybug) without changing its functionality. Objectives: Fix compatibility issues with the latest Android Studio and Gradle versions. Make sure the project builds without errors or blocking warnings. Ensure the app runs properly on a modern Android device or emulator. Project details: The project includes: One main module: app One secondary module: pix (handles photo & camera functions) Legacy dependencies such as: com.android.support:appcompat-v7:27.1.0 com.google.firebase:firebase-messaging:11.8.0 com.github.gcacace:signature-pad:1.2.1 android.arch.persistence.room:runtime:1.1.0 Technical expectations: Fix Gradle / SDK / Java compatibility issues. Adjust build.gradle and gradle-wrapper.properties to use proper versions. Configure the correct build environment (Gradle, JDK, SDK). Optionally migrate the project to AndroidX if necessary, while keeping all features intact. Target environment: Latest Android Studio (Koala / Ladybug) Compatible Gradle setup The project must compile and run without errors on a recent Android emulator or device. Deliverables: A working project that compiles in Android Studio. A short setup note explaining: The versions used (JDK, SDK, Gradle) The changes made to ensure compatibility.