缺少创建新 AS 项目并在安装时在我的设备上填充 lib 文件夹的步骤 [英] Missing step to create a new AS project and get a lib folder populated on my device upon installation

问题描述

我希望在我安装 APK 时，我的 APK 中的库可以从固定位置在我的设备上使用.

I want the libs present in my APK to be available on my device from a fixed location when I install my APK.

我根据我现有的项目打开了关于这个问题的另一个问题.这一次，我从头开始了一个全新的项目，以减少未知数并使我的问题更容易解决.

I opened another question about this issue based on my existing project. This time, I started a brand new project from scratch in order to reduce the unknowns and make my question simpler to resolve.

使用 Android Studio 4.0.1，我执行以下操作:

With Android Studio 4.0.1, I do the following:

• 启动一个新的 Android Studio 项目

• Start a new Android Studio project

选择本机 C++

设置项目名称为 test

Set project name to test

选择 Java 作为语言

Select Java as language

使用默认工具链

构建 ->制作项目

在项目视图下，我验证我的 app-debug.apk 有一个 lib 文件夹，其中包含几个子目录，每个子目录至少包含 libnative-lib.so 是根据默认的 CMakeLists.txt 规则为此项目构建的.

Under the project view, I verify that my app-debug.apk has a lib folder containing a few subdirectories, each with at least the libnative-lib.so that was built for this project accordingly to the default CMakeLists.txt rules.

我希望在安装 APK 时可以从我的设备访问这个 .so(我有一个更复杂的项目，我在其中创建了 .so，以便我想从 APK 外部访问).

I would like this .so to be accessible from my device when I install my APK (I have a more complex project in which I create .so that I want accessible from outside the APK).

但是，从我的项目文件夹中，当我运行时:

However, from my project folder, when I run:

c:\Users\xxx\AndroidStudioProjects\test>adb install app\build\outputs\apk\debug\app-debug.apk
Performing Streamed Install
Success

c:\Users\xxx\AndroidStudioProjects\test>adb shell ls /data/data/com.example.test
cache
code_cache

我尝试过的其他更改

以下进一步的更改都没有让我看到 /data/data/com.example.test

• 将 android.bundle.enableUncompressedNativeLibs=false 添加到 gradle.properties

已添加

android {
    ...
    sourceSets.main {
        jniLibs.srcDirs = ['libs']
        jni.srcDirs = []
    }

到 build.gradle 不要对此做任何更改.

to build.gradle do not change anything to this.

将 set(distribution_DIR ${CMAKE_SOURCE_DIR}/libs) 添加到 CMakeLists.txt

推荐答案

本机库不在 /data/data/your.app 中，而是在 /data/app/your 中.aapp-==/lib/，例如在我的目标上:

Native libraries are not placed in /data/data/your.app but in /data/app/your.aapp-<key-hash>==/lib/<ABI>, for example on my target:

hikey960:/ # cd /data/app/com.example.dlopen-6BSPeAN9VvjFlCxIzLHX9A\=\=/lib/arm64                                                                                     
hikey960:/data/app/com.example.dlopen-6BSPeAN9VvjFlCxIzLHX9A==/lib/arm64 # ls -als
total 1352
   4 drwxr-xr-x 2 system system    4096 2020-11-06 12:43 .
   4 drwxr-xr-x 3 system system    4096 2020-11-06 12:43 ..
1044 -rwxr-xr-x 1 system system 1067256 1981-01-01 01:01 libnative-lib.so
 300 -rwxr-xr-x 1 system system  305360 1981-01-01 01:01 libplugin.so

此外，本机库默认存档，无法访问，要提取它们，需要在 AndroidManifest.xml 中设置 android:extractNativeLibs=true"(例如像这里:https://github.com/nkh-lab/ndk-dlopen/blob/master/dlopen/app/src/main/AndroidManifest.xml).

Also native libraries are archived by default and can not be accessible, for extracting them it is needed to set android:extractNativeLibs="true" in AndroidManifest.xml (for example like here: https://github.com/nkh-lab/ndk-dlopen/blob/master/dlopen/app/src/main/AndroidManifest.xml).

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