parent
689ef92e41
commit
a282b3e72e
@ -0,0 +1 @@
|
||||
/build
|
@ -0,0 +1,13 @@
|
||||
plugins {
|
||||
id("java-library")
|
||||
alias(libs.plugins.kotlin.jvm)
|
||||
}
|
||||
java {
|
||||
sourceCompatibility = JavaVersion.VERSION_11
|
||||
targetCompatibility = JavaVersion.VERSION_11
|
||||
}
|
||||
kotlin {
|
||||
compilerOptions {
|
||||
jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_11
|
||||
}
|
||||
}
|
@ -0,0 +1,4 @@
|
||||
package com.example.lib
|
||||
|
||||
class MyClass {
|
||||
}
|
@ -0,0 +1 @@
|
||||
/build
|
@ -0,0 +1,54 @@
|
||||
plugins {
|
||||
alias(libs.plugins.android.library)
|
||||
alias(libs.plugins.kotlin.android)
|
||||
}
|
||||
|
||||
android {
|
||||
namespace = "com.example.nativelib"
|
||||
compileSdk = 36
|
||||
|
||||
defaultConfig {
|
||||
minSdk = 21
|
||||
|
||||
testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
|
||||
consumerProguardFiles("consumer-rules.pro")
|
||||
externalNativeBuild {
|
||||
cmake {
|
||||
cppFlags("")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
buildTypes {
|
||||
release {
|
||||
isMinifyEnabled = false
|
||||
proguardFiles(
|
||||
getDefaultProguardFile("proguard-android-optimize.txt"),
|
||||
"proguard-rules.pro"
|
||||
)
|
||||
}
|
||||
}
|
||||
externalNativeBuild {
|
||||
cmake {
|
||||
path("src/main/cpp/CMakeLists.txt")
|
||||
version = "3.22.1"
|
||||
}
|
||||
}
|
||||
compileOptions {
|
||||
sourceCompatibility = JavaVersion.VERSION_11
|
||||
targetCompatibility = JavaVersion.VERSION_11
|
||||
}
|
||||
kotlinOptions {
|
||||
jvmTarget = "11"
|
||||
}
|
||||
}
|
||||
|
||||
dependencies {
|
||||
|
||||
implementation(libs.androidx.core.ktx)
|
||||
implementation(libs.androidx.appcompat)
|
||||
implementation(libs.material)
|
||||
testImplementation(libs.junit)
|
||||
androidTestImplementation(libs.androidx.junit)
|
||||
androidTestImplementation(libs.androidx.test.espresso.core)
|
||||
}
|
@ -0,0 +1,21 @@
|
||||
# Add project specific ProGuard rules here.
|
||||
# You can control the set of applied configuration files using the
|
||||
# proguardFiles setting in build.gradle.
|
||||
#
|
||||
# For more details, see
|
||||
# http://developer.android.com/guide/developing/tools/proguard.html
|
||||
|
||||
# If your project uses WebView with JS, uncomment the following
|
||||
# and specify the fully qualified class name to the JavaScript interface
|
||||
# class:
|
||||
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
|
||||
# public *;
|
||||
#}
|
||||
|
||||
# Uncomment this to preserve the line number information for
|
||||
# debugging stack traces.
|
||||
#-keepattributes SourceFile,LineNumberTable
|
||||
|
||||
# If you keep the line number information, uncomment this to
|
||||
# hide the original source file name.
|
||||
#-renamesourcefileattribute SourceFile
|
@ -0,0 +1,24 @@
|
||||
package com.example.nativelib
|
||||
|
||||
import androidx.test.platform.app.InstrumentationRegistry
|
||||
import androidx.test.ext.junit.runners.AndroidJUnit4
|
||||
|
||||
import org.junit.Test
|
||||
import org.junit.runner.RunWith
|
||||
|
||||
import org.junit.Assert.*
|
||||
|
||||
/**
|
||||
* Instrumented test, which will execute on an Android device.
|
||||
*
|
||||
* See [testing documentation](http://d.android.com/tools/testing).
|
||||
*/
|
||||
@RunWith(AndroidJUnit4::class)
|
||||
class ExampleInstrumentedTest {
|
||||
@Test
|
||||
fun useAppContext() {
|
||||
// Context of the app under test.
|
||||
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
|
||||
assertEquals("com.example.nativelib.test", appContext.packageName)
|
||||
}
|
||||
}
|
@ -0,0 +1,4 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
|
||||
|
||||
</manifest>
|
@ -0,0 +1,38 @@
|
||||
# For more information about using CMake with Android Studio, read the
|
||||
# documentation: https://d.android.com/studio/projects/add-native-code.html.
|
||||
# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
|
||||
|
||||
# Sets the minimum CMake version required for this project.
|
||||
cmake_minimum_required(VERSION 3.22.1)
|
||||
|
||||
# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
|
||||
# Since this is the top level CMakeLists.txt, the project name is also accessible
|
||||
# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
|
||||
# build script scope).
|
||||
project("nativelib")
|
||||
|
||||
# Creates and names a library, sets it as either STATIC
|
||||
# or SHARED, and provides the relative paths to its source code.
|
||||
# You can define multiple libraries, and CMake builds them for you.
|
||||
# Gradle automatically packages shared libraries with your APK.
|
||||
#
|
||||
# In this top level CMakeLists.txt, ${CMAKE_PROJECT_NAME} is used to define
|
||||
# the target library name; in the sub-module's CMakeLists.txt, ${PROJECT_NAME}
|
||||
# is preferred for the same purpose.
|
||||
#
|
||||
# In order to load a library into your app from Java/Kotlin, you must call
|
||||
# System.loadLibrary() and pass the name of the library defined here;
|
||||
# for GameActivity/NativeActivity derived applications, the same library name must be
|
||||
# used in the AndroidManifest.xml file.
|
||||
add_library(${CMAKE_PROJECT_NAME} SHARED
|
||||
# List C/C++ source files with relative paths to this CMakeLists.txt.
|
||||
nativelib.cpp
|
||||
)
|
||||
|
||||
# Specifies libraries CMake should link to your target library. You
|
||||
# can link libraries from various origins, such as libraries defined in this
|
||||
# build script, prebuilt third-party libraries, or Android system libraries.
|
||||
target_link_libraries(${CMAKE_PROJECT_NAME}
|
||||
# List libraries link to the target library
|
||||
android
|
||||
log)
|
@ -0,0 +1,10 @@
|
||||
#include <jni.h>
|
||||
#include <string>
|
||||
|
||||
extern "C" JNIEXPORT jstring JNICALL
|
||||
Java_com_example_nativelib_NativeLib_stringFromJNI(
|
||||
JNIEnv* env,
|
||||
jobject /* this */) {
|
||||
std::string hello = "Hello from C++";
|
||||
return env->NewStringUTF(hello.c_str());
|
||||
}
|
@ -0,0 +1,18 @@
|
||||
package com.example.nativelib
|
||||
|
||||
class NativeLib {
|
||||
|
||||
/**
|
||||
* A native method that is implemented by the 'nativelib' native library,
|
||||
* which is packaged with this application.
|
||||
*/
|
||||
external fun stringFromJNI(): String
|
||||
|
||||
companion object {
|
||||
// Used to load the 'nativelib' library on application startup.
|
||||
init {
|
||||
System.loadLibrary("nativelib")
|
||||
}
|
||||
}
|
||||
|
||||
}
|
@ -0,0 +1,17 @@
|
||||
package com.example.nativelib
|
||||
|
||||
import org.junit.Test
|
||||
|
||||
import org.junit.Assert.*
|
||||
|
||||
/**
|
||||
* Example local unit test, which will execute on the development machine (host).
|
||||
*
|
||||
* See [testing documentation](http://d.android.com/tools/testing).
|
||||
*/
|
||||
class ExampleUnitTest {
|
||||
@Test
|
||||
fun addition_isCorrect() {
|
||||
assertEquals(4, 2 + 2)
|
||||
}
|
||||
}
|
@ -0,0 +1,42 @@
|
||||
/*
|
||||
* Copyright 2025 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* https://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.google.samples.apps.nowinandroid
|
||||
|
||||
import android.util.Log
|
||||
|
||||
val TAG: String = "R8"
|
||||
|
||||
/**
|
||||
* A class with private members to demonstrate reflection.
|
||||
*/
|
||||
class LibraryClass {
|
||||
private val secretMessage: Message = Message("R8 will remove me")
|
||||
}
|
||||
|
||||
data class Message(
|
||||
val message: String,
|
||||
val id: Int = 0
|
||||
)
|
||||
|
||||
// In your app code:
|
||||
fun accessSecretMessage(instance: LibraryClass) {
|
||||
// Use Java reflection from Kotlin to access the private field
|
||||
val secretField = instance::class.java.getDeclaredField("secretMessage")
|
||||
secretField.isAccessible = true
|
||||
val message = secretField.get(instance) as Message
|
||||
Log.d(TAG, message.toString())
|
||||
}
|
@ -1,4 +1,12 @@
|
||||
# Keep DataStore fields
|
||||
-keepclassmembers class * extends com.google.protobuf.GeneratedMessageLite* {
|
||||
<fields>;
|
||||
}
|
||||
}
|
||||
|
||||
-keepclassmembers,includedescriptorclasses class com.google.samples.apps.nowinandroid.LibraryClass {
|
||||
private * secretMessage;
|
||||
}
|
||||
|
||||
-printconfiguration r8/full-r8-config.txt # Prints the entire configuration for the app
|
||||
-printusage r8/usage.txt # Prints where R8 removed code from the app
|
||||
-printseeds r8/seeds.txt
|
Loading…
Reference in new issue