android: added product flavors to separatly build apk for arm64-v8a or x86_64

android/README.md

@@ -2,11 +2,14 @@
 
 Notes and resources for MPD android maintainers.
 
+## Build
+
+See [Compiling for Android](https://github.com/MusicPlayerDaemon/MPD/blob/45cb098cd765af12316f8dca5635ef10a852e013/doc/user.rst#compiling-for-android)
+
 ## Android studio
 
 ### Version control
 
-
 git ignoring .idea directory completely until a good reason emerges not to
 
 * [How to manage projects under Version Control Systems (jetbrains.com)](https://intellij-support.jetbrains.com/hc/en-us/articles/206544839-How-to-manage-projects-under-Version-Control-Systems)
@@ -17,10 +20,9 @@ git ignoring .idea directory completely until a good reason emerges not to
 
 *  [Include prebuilt native libraries (developer.android.com)](https://developer.android.com/studio/projects/gradle-external-native-builds#jniLibs)
 
+## Permissions
 
-### Permissions
-
-#### Files access
+### Files access
 
 The required permission depends on android SDK version:
 
@@ -29,7 +31,7 @@ The required permission depends on android SDK version:
     else
         Manifest.permission.READ_EXTERNAL_STORAGE
 
-#### Permission request
+### Permission request
 
 [Request runtime permissions](https://developer.android.com/training/permissions/requesting)
 

android/app/build.gradle.kts

@@ -18,11 +18,6 @@ android {
         vectorDrawables {
             useSupportLibrary = true
         }
-        ndk {
-            // Specifies the ABI configurations of your native
-            // libraries Gradle should build and package with your app.
-            abiFilters += "arm64-v8a"
-        }
     }
 
     buildFeatures {
@@ -46,12 +41,29 @@ android {
             )
         }
     }
+    // flavors
+    flavorDimensions += "base"
+    productFlavors {
+        create("arm64-v8a") {
+            ndk {
+                // ABI to include in package
+                //noinspection ChromeOsAbiSupport
+                abiFilters += listOf("arm64-v8a")
+            }
+        }
+        create("x86_64") {
+            ndk {
+                // ABI to include in package
+                abiFilters += listOf("x86_64")
+            }
+        }
+    }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_1_9
         targetCompatibility = JavaVersion.VERSION_1_9
     }
     kotlinOptions {
-        jvmTarget = "9"
+        jvmTarget = JavaVersion.VERSION_1_9.toString()
     }
     packaging {
         resources {

android/build.py

@@ -70,3 +70,11 @@ ninja = shutil.which("ninja")
 subprocess.check_call([ninja], env=toolchain.env)
 
 subprocess.check_call([ninja, 'install'], env=toolchain.env)
+
+print("""
+-------------------------------------
+## To build the android app:
+# cd ../../android
+# ./gradlew assemble{}Debug
+-------------------------------------
+""".format(android_abi.capitalize()))

doc/user.rst

@@ -223,11 +223,14 @@ tarball and change into the directory.  Then, instead of
    -Dwrap_mode=forcefallback \
    -Dandroid_debug_keystore=$HOME/.android/debug.keystore
  cd ../../android
- ./gradlew assembleDebug
+ ./gradlew assemble{ABI}Debug
+
+In the argument to `gradlew`, replace `{ABI}` with the build ABI.
+The `productFlavor` names defined in `build.android.kts` match the ABI.
 
 :envvar:`SDK_PATH` is the absolute path where you installed the
 Android SDK; :envvar:`NDK_PATH` is the Android NDK installation path;
-ABI is the Android ABI to be built, e.g. ":code:`arm64-v8a`".
+ABI is the Android ABI to be built, e.g. ":code:`x86`, `x86_64`, `armeabi`, `armeabi-v7a`, `arm64-v8a`".
 
 This downloads various library sources, and then configures and builds :program:`MPD`.