安装APK时缺少lib文件夹 [英] lib folder missing when installing APK
问题描述
我想知道如何构建APK，以便在安装APK时在/data/data/<程序包名称>/lib 下安装/复制我的库.
I would like to know how to build my APK so that my libraries are installed/copied under /data/data/<package name>/lib when installing the APK.
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我正在使用Android Studio 4.0.1
I am using Android Studio 4.0.1
我构建了一个APK，并在提取APK时确认我有一个包含我的jni库的 lib/arm64-v8a 文件夹.
I build an APK and confirm when I extract it that I have a
lib/arm64-v8a folder that contains my jni libs.
我希望在安装APK后，同一设备上的其他一些应用程序可以访问 lib/arm64-v8a 中的库./data/data/< package name> 文件夹似乎是执行此操作的正确位置，因此，我的问题是:如果还有另一种方法可以使我的图书馆在设备上访问，则我愿意接受它.
I want that after I install my APK, some other applications on the same device can access the libs that I have in the lib/arm64-v8a. The /data/data/<package name> folder seems to be the right place for this, hence my question; if there is another approach for making my libraries accessible on device, I am open to it.
我设置了 android.bundle.enableUncompressedNativeLibs = false 在我基于此讨论的 gradle.properties 文件中尽管使用true或false都看不到效果.
I set android.bundle.enableUncompressedNativeLibs=false
in my gradle.properties file based on this discussion even
though I didn't see any effect using it with true or false.
我在清单中设置了 android:extractNativeLibs ="true"
但是，当我adb安装我的apk时，设备上的/data/data/< package name>/文件夹仅包含 cache 和code_cache 文件夹，两者都为空.
However, when I adb install my apk, the /data/data/<package name>/ folder on my device only contains a cache and code_cache folder, both of which are empty.
我确实在/data/app/下看到一个包含我的库的文件夹，但是它们包含的字符串是我每次安装APK时随机设置的:
I do see under /data/app/ a folder with my libraries but they include strings that are randomly set each time I install the APK:
/data/app/~~sFE8-eNknFAkhKJ-1S03lg==/<package name>-rsDLNgpi4vult7yVBrPNOQ==/
base.apk
lib/arm64/
<my .so in there>
这些随机字符串使我无法从任何其他应用程序可靠地访问我的库.(如果有一种方法可以将这些随机字符串作为名称的一部分，并且/data/app 是建议将我的库与其他应用程序共享的位置，则我对这种替代方法很感兴趣)
These random strings prevent me from accessing reliably my libraries from any other application. (If there is a way to not have these random strings as part of the name and /data/app is the recommended location for my libraries to be shared with other applications, I am interested in that alternate approach.)
我还安装了其他预构建的APK，并随心所欲地看到了/data/data/< package name>/lib 下的库.对我来说，这表明我的问题与我如何使用AS 4.0.1构建APK无关，而与设备，其Android版本或安装APK的方式有关.
I have also installed other prebuilt APK and with these, I do see the libraries under /data/data/<package name>/lib like I want. This to me indicates that my issue is related to how I build my APK with AS 4.0.1, not to my device, its Android version, or how I install the APK.
这是我的gradle文件:
Here is my gradle file:
import java.util.regex.Matcher
import java.util.regex.Pattern
apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.2"
lintOptions {
checkReleaseBuilds false
abortOnError false
}
sourceSets.main {
jniLibs.srcDirs = ['libs']
jni.srcDirs = []
}
defaultConfig {
applicationId "com.example.myexample"
minSdkVersion 16
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
version "3.17.0"
cppFlags ""
arguments "-DANDROID_STL=c++_shared"
}
}
ndk {
moduleName "myexample"
abiFilter "arm64-v8a"
ldLibs "log"
}
packagingOptions {
exclude "lib/arm64-v8a/libassets.so"
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
externalNativeBuild {
cmake {
version "3.17.0"
path "src/main/cpp/CMakeLists.txt"
// There can be only one CMAKE per project: https://developer.android.com/studio/projects/gradle-external-native-builds
}
}
}
task copyFiles(type: Copy) {
description = 'Testing a manual copy operation (confirmed it works)...'
from file("../dsp/external/ship/libmyexample_skel.so")
into file("$buildDir/res/raw/")
}
project.afterEvaluate {
preBuild.dependsOn copyFiles
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
我尝试过的其他事情:我手动创建了一个src/main/jniLibs.arm64-v8a文件夹，在其中放置了一个.so.当我解压缩该.so时，它会出现在我的apk中，但是我的/data/data/< package name>/文件夹仍然没有lib.
Something else I tried: I created manually a src/main/jniLibs.arm64-v8a folder in which I place a .so. That .so appears in the my apk when I extract it, but my /data/data/<package name>/ folder doesn't have a lib nevertheless.
推荐答案
我认为您需要添加此代码以将libs添加到适当的文件夹中，例如/data/data/< package name>/lib
I think you need to add this code to add libs in the appropriate folder like /data/data/<package name>/lib
将此添加到应用的 build.gradle 文件中，放入 android {} 标记
add this to app's build.gradle file into android{} tag
sourceSets.main {
jniLibs.srcDirs = ['libs']
jni.srcDirs = []
}
将此文件保存到 CMakeList.txt 文件
cmake_minimum_required(VERSION 3.4.1)
find_library( # Sets the name of the path variable.
log-lib
log)
set(distribution_DIR ${CMAKE_SOURCE_DIR}/libs)
add_library(yourLibName
SHARED
...//list of your c/c++ files here from jni folder
)
target_link_libraries(yourLibName ${log-lib})
注意:在更改Gradle配置时，请确保通过单击工具栏中的同步项目"来应用更改.此外，在更改CMake或ndk-build脚本时将文件链接到Gradle之后，您应该同步您可以通过选择Build>更改Android Studio.刷新链接菜单栏中的C ++项目.
Note: When making changes to the Gradle configuration, make sure to apply your changes by clicking Sync Project in the toolbar. Additionally, when making changes to your CMake or ndk-build script file after you have already linked it to Gradle, you should sync Android Studio with your changes by selecting Build > Refresh Linked C++ Projects from the menu bar.
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