feat(android): update Android build process by adding SDK setup for Chaquopy native wheels and enabling ABI selection for builds

.github/workflows/android-build.yml

@@ -93,8 +93,26 @@ jobs:
                   ./rustup-init.sh -y --profile minimal --default-toolchain stable
                   echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
 
+            - name: Set up Android SDK for Chaquopy native wheels
+              run: |
+                  set -euo pipefail
+                  SDK_ROOT="${RUNNER_TEMP}/android-sdk"
+                  mkdir -p "${SDK_ROOT}/cmdline-tools"
+                  curl -fsSL -o /tmp/android-cmdline-tools.zip \
+                      "https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip"
+                  unzip -q /tmp/android-cmdline-tools.zip -d /tmp
+                  rm -f /tmp/android-cmdline-tools.zip
+                  mv /tmp/cmdline-tools "${SDK_ROOT}/cmdline-tools/latest"
+                  yes | "${SDK_ROOT}/cmdline-tools/latest/bin/sdkmanager" --sdk_root="${SDK_ROOT}" --licenses >/dev/null
+                  yes | "${SDK_ROOT}/cmdline-tools/latest/bin/sdkmanager" --sdk_root="${SDK_ROOT}" \
+                      "ndk;27.3.13750724" "platform-tools" >/dev/null
+                  {
+                      echo "ANDROID_HOME=${SDK_ROOT}"
+                      echo "ANDROID_SDK_ROOT=${SDK_ROOT}"
+                  } >> "${GITHUB_ENV}"
+
             - name: Build Android wheels
-              run: bash scripts/build-android-wheels-local.sh --python-minor "${PYTHON_VERSION}" --chaquopy-ref "${CHAQUOPY_REF}"
+              run: bash scripts/build-android-wheels-local.sh --python-minor "${PYTHON_VERSION}" --chaquopy-ref "${CHAQUOPY_REF}" --abis arm64-v8a,x86_64,armeabi-v7a
 
             - name: Run unit tests
               if: ${{ github.event_name != 'workflow_dispatch' || inputs.run_tests }}

android/app/build.gradle

@@ -9,6 +9,21 @@ def chaquopyBuildPython = System.getenv("CHAQUOPY_BUILD_PYTHON")
 def pythonTempDir = new File(buildDir, "python-tmp")
 def vendorWheelDir = new File(rootProject.projectDir, "vendor")
 def lxstPatchedWheel = new File(rootProject.projectDir, "vendor/lxst-0.4.6-py3-none-any.whl")
+def allAndroidAbis = ["arm64-v8a", "x86_64", "armeabi-v7a"]
+def selectedAndroidAbis = (
+    project.findProperty("meshchatxAbis")
+        ?: System.getenv("MESHCHATX_ABIS")
+        ?: allAndroidAbis.join(",")
+).split(",").collect { it.trim() }.findAll { it }
+
+if (selectedAndroidAbis.isEmpty()) {
+    throw new org.gradle.api.GradleException("No Android ABIs selected. Use -PmeshchatxAbis or MESHCHATX_ABIS.")
+}
+def invalidAndroidAbis = selectedAndroidAbis.findAll { !allAndroidAbis.contains(it) }
+if (!invalidAndroidAbis.isEmpty()) {
+    throw new org.gradle.api.GradleException("Unsupported ABIs: ${invalidAndroidAbis}. Supported: ${allAndroidAbis}")
+}
+def enableAbiSplits = selectedAndroidAbis.size() > 1
 
 android {
     namespace 'com.meshchatx'
@@ -23,16 +38,18 @@ android {
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         ndk {
-            abiFilters "arm64-v8a", "x86_64"
+            abiFilters(*selectedAndroidAbis as String[])
         }
     }
 
     splits {
         abi {
-            enable true
+            enable enableAbiSplits
             reset()
-            include "arm64-v8a", "x86_64"
-            universalApk true
+            if (enableAbiSplits) {
+                include(*selectedAndroidAbis as String[])
+            }
+            universalApk enableAbiSplits
         }
     }