Switching from travis-ci to GitHub actions

.github/workflows/build.yml

@@ -0,0 +1,33 @@
+name: Build an test
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+    - name: Cache gradle and sdk
+      uses: actions/cache@v2
+      env:
+        cache-name: Cache Gradle and SDK
+      with:
+        path: |
+          ${{ github.workspace }}/.opt/cache/gradle/wrapper
+          ${{ github.workspace }}/.opt/cache/gradle/caches
+          ${{ github.workspace }}/.opt/cache/gradle/caches
+          ${{ github.workspace }}/.opt/sdk
+        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/wrapper/gradle-wrapper.properties', '**/build.gradle') }}
+        restore-keys: |
+          ${{ runner.os }}-build-${{ env.cache-name }}-
+          ${{ runner.os }}-build-
+          ${{ runner.os }}-
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew build test -Pci

.travis.yml

@@ -1,31 +0,0 @@
-language: android
-dist: trusty
-android:
-  components:
-    # Uncomment the lines below if you want to
-    # use the latest revision of Android SDK Tools
-    - tools
-    - platform-tools
-
-    # The BuildTools version used by your project
-    - build-tools-29.0.3
-
-    # The SDK version used to compile your project
-    - android-29
-
-    # Additional components
-    - extra-google-m2repository
-    - extra-android-m2repository
-
-# Gradle caching
-before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-cache:
-  directories:
-    - $HOME/.gradle/caches/
-    - $HOME/.gradle/wrapper/
-    - $HOME/.android/build-cache
-
-script:
-  - ./gradlew build test -Pci