upgrade gradle version & add "setupNcnn" task for get "ncnn-YYYYMMDD-android-vulkan.zip"

.gitignore

@@ -0,0 +1,139 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+**/.cxx
+local.properties
+# Created by .ignore support plugin (hsz.mobi)
+### NetBeans template
+nbproject/private/
+build/
+nbbuild/
+dist/
+nbdist/
+nbactions.xml
+nb-configuration.xml
+
+# Mac OS X Garbage
+.DS_Store
+Thumbs.db
+
+.idea/
+
+### Android Studio
+/jniLibs
+mobile/mobile.iml
+mobile/mobile.iml
+tv/tv.iml
+app/app.iml
+app/*.iml
+*.iml
+mobile/*.iml
+tv/*.iml
+.idea/workspace.xml
+.idea/libraries
+.idea/
+.idea
+/build
+/captures
+### Android template
+# Built application files
+*.apk
+*.ap_
+/build
+/captures
+# Files for the Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+
+# Gradle files
+.gradle/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Proguard folder generated by Eclipse
+proguard/
+
+# Log Files
+*.log
+
+
+### Java template
+*.class
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+
+### Eclipse template
+*.pydevproject
+.metadata
+.gradle
+bin/
+tmp/
+*.tmp
+*.bak
+*.swp
+*~.nib
+.settings/
+.loadpath
+/build
+/captures
+# External tool builders
+.externalToolBuilders/
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+# sbteclipse plugin
+.target
+
+# TeXlipse plugin
+.texlipse
+
+# Android Studio
+*.iml
+
+# Keep external libs
+!app/libs/*.jar
+
+# script output
+check-dpi.txt*
+
+# spring  output
+target
+
+#KMP & CMP
+.kotlin
+*.podspec
+/common/common.podspec

app/build.gradle

@@ -1,20 +1,31 @@
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import org.json.JSONObject
+
 plugins {
-    id 'com.android.application'
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+}
+
+ext {
+    ncnnJniDir = file("src/main/jni")
+    ncnnTargetDirName = "ncnn-android-vulkan"
+    ncnnDir = file("${ncnnJniDir}/${ncnnTargetDirName}")
 }
 
 android {
     namespace 'com.tencent.piperncnn'
-    compileSdk 33
+    compileSdk 36
 
     defaultConfig {
         applicationId "com.tencent.piperncnn"
         archivesBaseName = "$applicationId"
-
-        minSdk 24
+        minSdk 21
 
         externalNativeBuild {
             cmake {
-                arguments "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON"
+                arguments "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON",
+                          "-Dncnn_DIR_FROM_GRADLE=${project.ext.ncnnDir.absolutePath}"
             }
         }
     }
@@ -26,13 +37,78 @@ android {
         }
     }
 
-    dependencies {
-        implementation 'com.android.support:support-v4:24.0.0'
-    }
-
     packaging {
         jniLibs {
             useLegacyPackaging true
         }
     }
 }
+
+tasks.register('setupNcnn') {
+    group = "NCNN Setup"
+    description = "Downloads and extracts the latest NCNN library for Android Vulkan."
+    outputs.dir(project.ext.ncnnDir)
+    doLast {
+        println "==============================================="
+        println "Executing 'setupNcnn' task..."
+        def ncnnApiUrl = "https://api.github.com/repos/Tencent/ncnn/releases/latest"
+        def client = new OkHttpClient()
+        def request = new Request.Builder().url(ncnnApiUrl).build()
+        def downloadUrl = ""
+        def zipRootFolderName = ""
+
+        try {
+            client.newCall(request).execute().withCloseable { response ->
+                if (!response.isSuccessful()) {
+                    throw new IOException("Failed to query GitHub API: ${response}")
+                }
+                def responseBody = response.body().string()
+                def releaseInfo = new JSONObject(responseBody)
+                def assets = releaseInfo.getJSONArray("assets")
+
+                for (int i = 0; i < assets.length(); i++) {
+                    def asset = assets.getJSONObject(i)
+                    String name = asset.getString("name")
+                    if (name.contains("-android-vulkan.zip")) {
+                        downloadUrl = asset.getString("browser_download_url")
+                        zipRootFolderName = name.replace(".zip", "")
+                        println "Found latest NCNN release asset: ${name}"
+                        println "Download URL: ${downloadUrl}"
+                        println "Inferred zip root folder: ${zipRootFolderName}"
+                        break
+                    }
+                }
+            }
+        } catch (Exception e) {
+            throw new GradleException("Failed to get NCNN download URL from GitHub API. Please check your network. Error: ${e.message}")
+        }
+
+        if (downloadUrl.isEmpty()) {
+            throw new GradleException("Could not find 'ncnn-YYYYMMDD-android-vulkan.zip' in the latest release assets.")
+        }
+        def outputZip = file("${buildDir}/downloads/ncnn.zip")
+        outputZip.parentFile.mkdirs()
+        new URL(downloadUrl).withInputStream { i -> outputZip.withOutputStream { o -> o << i } }
+        println "Download complete: ${outputZip}"
+        println "Extracting ${outputZip} to ${project.ext.ncnnDir}..."
+        project.copy {
+            from(zipTree(outputZip))
+            into(project.ext.ncnnDir)
+            eachFile { file ->
+                file.path = file.path.replaceFirst("^${zipRootFolderName}/", "")
+            }
+            includeEmptyDirs = false
+        }
+
+        println "NCNN extracted successfully to ${project.ext.ncnnDir}"
+        println "==============================================="
+    }
+}
+
+tasks.named("preBuild").configure {
+    dependsOn("setupNcnn")
+}
+
+dependencies {
+
+}

app/src/main/AndroidManifest.xml

@@ -1,14 +1,17 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-      android:versionCode="1"
-      android:versionName="1.1">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <application android:label="@string/app_name">
-        <activity android:name="MainActivity" android:label="@string/app_name">
+    <application
+        android:label="@string/app_name">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
     </application>
-</manifest> 
+
+</manifest>
+

app/src/main/jni/CMakeLists.txt

@@ -2,7 +2,16 @@ project(piperncnn)
 
 cmake_minimum_required(VERSION 3.10)
 
-set(ncnn_DIR ${CMAKE_SOURCE_DIR}/ncnn-20250916-android-vulkan/${ANDROID_ABI}/lib/cmake/ncnn)
+#set(ncnn_DIR ${CMAKE_SOURCE_DIR}/ncnn-20250503-android-vulkan/${ANDROID_ABI}/lib/cmake/ncnn)
+if(DEFINED ncnn_DIR_FROM_GRADLE)
+    message(STATUS "Using NCNN path from Gradle: ${ncnn_DIR}")
+    #    set(ncnn_DIR ${ncnn_DIR_FROM_GRADLE}/${ANDROID_ABI}/lib/cmake/ncnn)
+    set(ncnn_DIR ${CMAKE_SOURCE_DIR}/ncnn-android-vulkan/${ANDROID_ABI}/lib/cmake/ncnn)
+else()
+    message(WARNING "ncnn_DIR_FROM_GRADLE not set. Falling back to default path. Please sync project with Gradle.")
+    set(ncnn_DIR ${CMAKE_SOURCE_DIR}/ncnn-android-vulkan/${ANDROID_ABI}/lib/cmake/ncnn)
+endif()
+
 find_package(ncnn REQUIRED)
 
 add_library(piperncnn SHARED piperncnn.cpp piper.cpp simpleg2p.cpp audioplayer.cpp)

build.gradle

@@ -1,4 +1,17 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-plugins {
-id 'com.android.application' version '8.7.3' apply false
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.squareup.okhttp3:okhttp:4.12.0"
+        classpath "org.json:json:20251224"
+    }
 }
+
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.android.library) apply false
+    alias(libs.plugins.kotlin.android) apply false
+}

gradle.properties

@@ -1 +1,23 @@
-org.gradle.jvmargs=-Xmx4096m
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true