Update android_build.yml

.github/workflows/android_build.yml

@@ -1,24 +1,24 @@
- name: Android Build
+name: Android Build
 
- on: pull_request
+on:
+  push:
+    branches:
+      - main
 
- jobs:
-   build:
+jobs:
+  build:
+    runs-on: ubuntu-latest
 
-     runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
 
-     steps:
-       - uses: actions/checkout@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
 
-       - name: Set up jdk
-         uses: actions/setup-java@v1
+      - name: Run Tests
+        run: ./gradlew test
 
-         with:
-           java-version: 1.8
-
-       - name: Run Tests
-         run: ./gradlew test
-
-
-       - name: Build Project
-         run: ./ gradlew assemble
+      - name: Build Project
+        run: ./gradlew assemble