Build pull request on CI

.github/workflows/android-emulator.yml

@@ -0,0 +1,28 @@
+name: Android Emulator test
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  build:
+    runs-on: macOS-latest
+    steps:
+      - uses: actions/checkout@v1
+      - name: set up JDK 1.8
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Build with Gradle
+        run: ./gradlew build
+      - name: Android Emulator test
+        uses: ReactiveCircus/[email protected]
+        with:
+          api-level: 28
+          disable-animations: true
+          script: ./gradlew cAT
+      - uses: actions/upload-artifact@v1
+        if: failure()
+        with:
+          name: Espresso-test-report
+          path: sample/build/reports/androidTests/connected/

.github/workflows/gradle-wrapper-validation.yml

@@ -0,0 +1,10 @@
+name: "Validate Gradle Wrapper"
+on: [push]
+
+jobs:
+  validation:
+    name: "Validation"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: gradle/wrapper-validation-action@v1

sample/build.gradle

@@ -33,6 +33,7 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation project(":anychart")
+    implementation 'com.android.support:multidex:1.0.3'
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'
     implementation 'com.android.support:recyclerview-v7:28.0.0'