Create build_pull_request.yml

.github/workflows/build_pull_request.yml

@@ -0,0 +1,40 @@
+name: Android CI
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    env:
+      NASA_API_KEY: ${{ secrets.NASA_API_KEY }} # This line sets the API key as an environment variable
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v2
+      with:
+        java-version: '17'
+        distribution: 'temurin'   # Temurin is a reliable distribution of OpenJDK
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x ./gradlew
+
+    - name: Cache Gradle packages
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+        restore-keys: |
+          ${{ runner.os }}-gradle-
+
+    - name: Build debug APK
+      run: ./gradlew assembleDebug
+
+    - name: Run unit tests
+      run: ./gradlew test