java Android Studio - 包含和使用 .so 库
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Android Studio - include and consume .so library
提问by user19922
I need to use some native libraries(.so) in my android project. According to some answers here in StackOverflow about this topic, I created a jniLibsfolder in app/src/mainand put there my files:
我需要在我的 android 项目中使用一些本机库（.so）。根据 StackOverflow 中关于这个主题的一些答案，我创建了一个jniLibs文件夹app/src/main并将我的文件放在那里：
armeabi/my_lib.so
armeabi-v7a/my_lib.so
x86/my_lib.so
Then, in my activity class I use:
然后，在我的活动课中，我使用：
static {
System.loadLibrary("my_lib");
}
But when I run the app, an UnsatisfiedLinkErrorexception is generated. If this is important to be noticed, I don't have an Android.mk file, and I haven't changed anything that has to do with this in my gradlefiles. So, the only think I did is to copy-paste my .sofiles in jniLibsand to write the code above in my activity. So what might be the cause of this problem? Am I missing something?
但是当我运行该应用程序时，UnsatisfiedLinkError会生成一个异常。如果要注意这一点很重要，我没有 Android.mk 文件，而且我的文件中也没有更改与此相关的任何内容gradle。所以，我唯一的想法就是复制粘贴我的.so文件jniLibs并在我的活动中编写上面的代码。那么这个问题的原因可能是什么？我错过了什么吗？
EDIT
编辑
This is my gradle:
这是我的毕业证书：
apply plugin: 'com.android.application'
android {
compileSdkVersion 15
buildToolsVersion "23.0.3"
compileOptions.encoding = 'ISO-8859-1'
defaultConfig {
applicationId "my.package"
minSdkVersion 4
targetSdkVersion 4
ndk {
moduleName "my_so_lib"
}
}
sourceSets {
main {
jni.srcDirs = ["libs"]
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
debug {
debuggable true
}
}
splits {
abi {
enable true
reset()
include 'x86', 'armeabi-v7a', 'mips', 'armeabi'
universalApk false
}
}
}
回答by GuillaumeAgis
Solution 1
方案一
Create Folder "jniLibs" inside "src/main/" Put all your .so libraries inside "src/main/jniLibs" folder Folder structure looks like :
在“src/main/”中创建文件夹“jniLibs” 将所有 .so 库放在“src/main/jniLibs”文件夹中 文件夹结构如下：
|--app:
|--|--src:
|--|--|--main
|--|--|--|--jniLibs
|--|--|--|--|--armeabi
|--|--|--|--|--|--.so Files
Can you please confirm that you have this hierarchy ?
你能确认你有这个层次结构吗？
No extra code requires just sync your project and run your application.
没有额外的代码只需要同步您的项目并运行您的应用程序。
Reference https://github.com/commonsguy/sqlcipher-gradle/tree/master/src/main
参考 https://github.com/commonsguy/sqlcipher-gradle/tree/master/src/main
Solution 2
解决方案2
Add both code snippets in your module gradle.build file as a dependency:
在您的模块 gradle.build 文件中添加两个代码片段作为依赖项：
compile fileTree(dir: "$buildDir/native-libs", include: 'native-libs.jar')
How to create this custom jar:
如何创建这个自定义 jar：
task nativeLibsToJar(type: Jar, description: 'create a jar archive of the native libs') {
destinationDir file("$buildDir/native-libs")
baseName 'native-libs'
from fileTree(dir: 'libs', include: '**/*.so')
into 'lib/'
}
tasks.withType(Compile) {
compileTask -> compileTask.dependsOn(nativeLibsToJar)
}
回答by user19922
Thank you guys for helping but it was a stupid problem. When I imported my .sofiles under jniLibs, they were named like libSONAME.so. In these lines of code:
谢谢你们的帮助，但这是一个愚蠢的问题。当我.so在 下导入我的文件时jniLibs，它们被命名为libSONAME.so. 在这些代码行中：
static {
System.loadLibrary("libSONAME");
}
we should not use System.loadLibrary("libSONAME");, but just System.loadLibrary("SONAME");.
我们不应该使用System.loadLibrary("libSONAME");，而只是System.loadLibrary("SONAME");.
Then, just build the project and everything was OK.
然后，只需构建项目，一切就OK了。
Thank you all for helping. I hope this will save time to someone else.
谢谢大家的帮助。我希望这会为其他人节省时间。
