java 如何在android上加载本机库？
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How to load native library on android?
提问by Arsen Zahray
I've got a .so library, which I've extracted from an other APK.
我有一个 .so 库，是从其他 APK 中提取的。
I've copied it into /libs/armeabi location in my project.
我已将其复制到项目中的 /libs/armeabi 位置。
In my class, I'm loading it with
在我的课堂上，我正在加载它
static {
System.loadLibrary("mylib");
}
The app crashes with
该应用程序崩溃
08-03 07:52:08.089: E/AndroidRuntime(932): FATAL EXCEPTION: main
java.lang.ExceptionInInitializerError
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1319)
at android.app.Instrumentation.newActivity(Instrumentation.java:1053)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1974)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access0(ActivityThread.java:130)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.UnsatisfiedLinkError: Couldn't load mylib: findLibrary returned null
at java.lang.Runtime.loadLibrary(Runtime.java:365)
at java.lang.System.loadLibrary(System.java:535)
at com.example.mytestandroidapp.MainActivity.<clinit>(MainActivity.java:11)
08-03 07:52:08.089: E/AndroidRuntime(932): ... 15 more
I'm doing this in eclipse.
我在日食中这样做。
Here's the screen of the layout of my project:
这是我的项目布局的屏幕：
What should I do for this to start working?
我应该怎么做才能开始工作？
采纳答案by Hans Hardmeier
"rename mylib.soin libmylib.so, and run your programm again (without modify the loadLibrary argument)" from blackbelt
“重命名mylib.so中libmylib.so，并再次运行PROGRAMM（不修改调用LoadLibrary参数）”黑带从
+
+
The folder libs/armeabi-v7ashould also contain the libmylib.solibrary. If your phone is a new one, he will check there for libraries.
该文件夹libs/armeabi-v7a还应包含libmylib.so库。如果您的手机是新手机，他会在那里查看图书馆。
回答by Blackbelt
rename mylib.soin libmylib.so, and run your programm again (without modify the loadLibrary argument)
重命名mylib.so中libmylib.so，并再次运行PROGRAMM（不修改调用LoadLibrary参数）
回答by Artis JIANG
Try the lib location path refer to:
试试lib位置路径参考：
context.getApplicationInfo().dataDir + "/lib"
context.getApplicationInfo().dataDir + "/lib"
and if you use API level 9, alternatively directly go to the lib directory with
如果您使用 API 级别 9，或者直接转到 lib 目录
context.getApplicationInfo().nativeLibraryDir
context.getApplicationInfo().nativeLibraryDir
