Build android in CI

.clang-format-ignore

@@ -7,6 +7,9 @@ cmake-build-*/*
 libtransmission/version.h
 web/node_modules/*
 
+# android
+android/*
+
 # third-party maintained projects
 third-party/*
 

.github/workflows/actions.yml

@@ -793,3 +793,33 @@ jobs:
         with:
           name: binaries-${{ github.job }}
           path: pfx/**/*
+
+  android:
+    needs: [ what-to-make ]
+    runs-on: ubuntu-22.04
+    steps:
+    - name: Get Source
+      uses: actions/checkout@v3
+      with:
+        submodules: recursive
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    
+    - name: Setup Gradle
+      uses: gradle/gradle-build-action@v2
+      with:
+        gradle-version: 7.6
+
+    - name: Setup Android SDK
+      uses: android-actions/setup-android@v3
+
+    - name: Install NDK
+      run: sdkmanager "ndk;26.1.10909125"
+
+    - name: Build Transmission
+      working-directory: ./android
+      run: gradle build

.gitignore

@@ -23,6 +23,9 @@ node_modules/
 /third-party/miniupnp/miniupnpcstrings.h
 /third-party/suffixes_dafsa.h
 /web/public_html/transmission-app.js.map
+/android/.cxx
+/android/.gradle
+/android/build
 
 # CLion IDE build directory
 /cmake-build-*/

android/build.gradle

@@ -0,0 +1,73 @@
+buildscript {
+  repositories {
+    google()
+    mavenCentral()
+  }
+
+  dependencies {
+    classpath "com.android.tools.build:gradle:7.2.1"
+  }
+}
+
+apply plugin: "com.android.library"
+
+
+def appProject = rootProject.allprojects.find { it.plugins.hasPlugin('com.android.application') }
+
+def getExtOrDefault(name) {
+  return rootProject.ext.has(name) ? rootProject.ext.get(name) : project.properties["Transmission_" + name]
+}
+
+def getExtOrIntegerDefault(name) {
+  return rootProject.ext.has(name) ? rootProject.ext.get(name) : (project.properties["Transmission_" + name]).toInteger()
+}
+
+android {
+  ndkVersion getExtOrDefault("ndkVersion")
+  compileSdkVersion getExtOrIntegerDefault("compileSdkVersion")
+
+  defaultConfig {
+    minSdkVersion getExtOrIntegerDefault("minSdkVersion")
+    targetSdkVersion getExtOrIntegerDefault("targetSdkVersion")
+    externalNativeBuild {
+      cmake {
+        abiFilters "x86_64"
+        arguments "-DANDROID_STL=c++_shared", "-DWITH_CRYPTO=openssl", "-DCMAKE_CXX_FLAGS=-lz"
+      }
+    }
+  }
+  externalNativeBuild {
+    cmake {
+      path "../CMakeLists.txt"
+    }
+  }
+  buildTypes {
+    release {
+      minifyEnabled false
+    }
+  }
+
+  lintOptions {
+    disable "GradleCompatible"
+  }
+
+  compileOptions {
+    sourceCompatibility JavaVersion.VERSION_1_8
+    targetCompatibility JavaVersion.VERSION_1_8
+  }
+
+  buildFeatures {
+    prefab true
+  }
+}
+
+repositories {
+  mavenCentral()
+  google()
+}
+
+
+dependencies {
+  implementation "com.android.ndk.thirdparty:openssl:1.1.1q-beta-1"
+  implementation "com.android.ndk.thirdparty:curl:7.85.0-beta-1"
+}

android/gradle.properties

@@ -0,0 +1,6 @@
+Transmission_kotlinVersion=1.7.0
+# quotactl is defined from >= 26
+Transmission_minSdkVersion=26
+Transmission_targetSdkVersion=31
+Transmission_compileSdkVersion=31
+Transmission_ndkversion=21.4.7075529

android/src/main/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.transmissionbt.transmission">
+    <application android:label="Transmission">
+    </application>
+</manifest>