Use sdkmanager to retrieve cmake

The Android gradle plugin insists on specifying the version of cmake
to be used in compiling native code. We can get the specified, Android
supported version of cmake from sdkmanager, and put it in our path to
ensure a stable build (more stable than using whatever version of cmake
we get from choco).

.github/workflows/build-android.yml

@@ -22,11 +22,16 @@ jobs:
         choco install --no-progress -y android-ndk
         choco install --no-progress -y android-sdk
         choco install --no-progress -y ninja
+        new-item "C:\Users\runneradmin\.android\repositories.cfg" -ItemType "file"
+        echo yes | C:\Android\android-sdk\tools\bin\sdkmanager.bat "cmake;3.10.2.4988404"
+        gci -r -i "CMake*" C:\Android
+        echo $Env:PATH
     - name: Gradle Build
       run: |
+        $Env:PATH = "C:\Android\android-sdk\cmake\3.10.2.4988404\bin;" + $Env:PATH
         cd "$Env:GITHUB_WORKSPACE\lib\android_build"
         .\gradlew.bat assemble
-    - name: Java unit tests
+    - name: Java Unit test
       run: |
         cd "$Env:GITHUB_WORKSPACE\lib\android_build"
         .\gradlew.bat maesdk:test
@@ -36,8 +41,3 @@ jobs:
       with:
         name: reports
         path: lib\android_build\maesdk\build\reports
-    - name: Upload Artifacts
-      uses: actions/upload-artifact@v1
-      with:
-        name: maesdk
-        path: lib\android_build\maesdk\build\outputs\aar

lib/android_build/app/build.gradle

@@ -25,7 +25,7 @@ android {
     externalNativeBuild {
         cmake {
             path "src/main/cpp/CMakeLists.txt"
-            version "3.16.4"
+            version "3.10.2"
         }
     }
 }

lib/android_build/maesdk/build.gradle

@@ -31,7 +31,7 @@ android {
     externalNativeBuild {
         cmake {
             path "src/main/cpp/CMakeLists.txt"
-            version "3.16.4"
+            version "3.10.2"
         }
     }
 }