CI: Build against minimum and maximum supported Android SDK

Author: frankosterfeld

.github/workflows/build.yml

@@ -135,6 +135,11 @@ jobs:
   build-android:
     runs-on: ubuntu-latest
 
+    strategy:
+      fail-fast: false
+      matrix:
+        android_api: [26, 36]
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -157,23 +162,27 @@ jobs:
           cache: true
           extra: --autodesktop
 
-      - name: Build and install qtkeychain (Android)
+      - name: Build and install qtkeychain (Android API ${{ matrix.android_api }})
         run: |
           cmake -S ${{ github.workspace }} -B build/qtkeychain \
             -DCMAKE_TOOLCHAIN_FILE=$QT_ROOT_DIR/lib/cmake/Qt6/qt.toolchain.cmake \
             -DCMAKE_BUILD_TYPE=Release \
             -DBUILD_WITH_QT6=ON \
-            -DBUILD_TRANSLATIONS=OFF
+            -DBUILD_TRANSLATIONS=OFF \
+            -DQT_ANDROID_MIN_SDK_VERSION=${{ matrix.android_api }} \
+            -DQT_ANDROID_TARGET_SDK_VERSION=${{ matrix.android_api }}
           cmake --build build/qtkeychain
           cmake --install build/qtkeychain --prefix ${{ github.workspace }}/install
 
-      - name: Build TestAppExample (Android)
+      - name: Build TestAppExample (Android API ${{ matrix.android_api }})
         run: |
           cmake -S ${{ github.workspace }}/TestAppExample -B build/testapp \
             -DCMAKE_TOOLCHAIN_FILE=$QT_ROOT_DIR/lib/cmake/Qt6/qt.toolchain.cmake \
             -DCMAKE_BUILD_TYPE=Release \
             -DQt6Keychain_DIR=${{ github.workspace }}/install/lib/cmake/Qt6Keychain \
-            -DBUILD_WITH_QT6=ON
+            -DBUILD_WITH_QT6=ON \
+            -DQT_ANDROID_MIN_SDK_VERSION=${{ matrix.android_api }} \
+            -DQT_ANDROID_TARGET_SDK_VERSION=${{ matrix.android_api }}
           cmake --build build/testapp
 
   build-ios: