Add build workflow and update gradle files

.github/workflows/build.yml

@@ -0,0 +1,31 @@
+name: Android CI
+
+on:
+  push:
+    branches: [ "core" ]
+  pull_request:
+    branches: [ "core" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: get ncnn repo
+      run: git clone --recursive https://github.com/Tencent/ncnn app/src/main/jni/ncnn
+    - name: set up JDK
+      uses: actions/setup-java@v3
+      with:
+        java-version: '11'
+        distribution: 'zulu'
+        cache: gradle
+
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Build with Gradle
+      run: ./gradlew build
+    - name: Build debug apk
+      run: bash ./gradlew assembleDebug --stacktrace
+

.gitignore

@@ -87,3 +87,6 @@ lint/tmp/
 
 # Android Profiling
 *.hprof
+
+# ignore ncnn repo in jni path
+app/src/main/jni/ncnn

app/build.gradle

@@ -3,20 +3,18 @@ apply plugin: 'kotlin-android'
 
 ext.getVersionCode = { base ->
     try {
-        def stdout = new ByteArrayOutputStream()
-        exec {
+        providers.exec {
             commandLine 'git', 'rev-list', '--count', base + '..HEAD'
-            standardOutput(stdout)
-        }
-        Integer.parseInt(stdout.toString().trim())
+        }.standardOutput.asText.get().toInteger()
     } catch(ignored) {
         10
     }
 }
 
 android {
-    compileSdkVersion 30
-    ndkVersion '21.4.7075529'
+    namespace 'pro.archiemeng.waifu2x'
+    compileSdkVersion 34
+    ndkVersion '25.1.8937393'
 
     defaultConfig {
         applicationId "pro.archiemeng.waifu2x"
@@ -30,7 +28,7 @@ android {
         // Change here to choose the type of ncnn integration
         externalNativeBuild {
             cmake {
-                arguments "-DUSE_PREBUILT_NCNN=ON", "-DUSE_SHARED_NCNN=OFF"
+                arguments "-DUSE_PREBUILT_NCNN=OFF", "-DUSE_SHARED_NCNN=OFF", "-DNCNN_VULKAN=ON"
             }
         }