创建JNI服务遇UnsatisfiedLinkError：找不到libjavanativetestservice_jni.so

我基于ARPI13项目开发了一个访问JNI共享库的Service，但启动时抛出异常，提示无法找到指定的JNI库。

异常日志 #

8746 05-29 05:00:16.259   921   921 E AndroidRuntime: FATAL EXCEPTION: main                                                                                                  
8747 05-29 05:00:16.259   921   921 E AndroidRuntime: Process: vendor.alvenan.javanativetestservice, PID: 921                                                                
8748 05-29 05:00:16.259   921   921 E AndroidRuntime: java.lang.UnsatisfiedLinkError: dlopen failed: library "libjavanativetestservice_jni.so" not found                     
8749 05-29 05:00:16.259   921   921 E AndroidRuntime:    at java.lang.Runtime.loadLibrary0(Runtime.java:1077)                                                                
8750 05-29 05:00:16.259   921   921 E AndroidRuntime:    at java.lang.Runtime.loadLibrary0(Runtime.java:998)                                                                 
8751 05-29 05:00:16.259   921   921 E AndroidRuntime:    at java.lang.System.loadLibrary(System.java:1661)                                                                   
8752 05-29 05:00:16.259   921   921 E AndroidRuntime:    at vendor.alvenan.javanativetestservice.JavaNativeTestServiceImpl.<clinit>(JavaNativeTestServiceImpl.java:14)       
8753 05-29 05:00:16.259   921   921 E AndroidRuntime:    at vendor.alvenan.javanativetestservice.JavaNativeTestService.onCreate(JavaNativeTestService.java:14)               
8754 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1277)                                   
8755 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6759)                                       
8756 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.app.ActivityThread.-$$Nest$mhandleBindApplication(Unknown Source:0)                                      
8757 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2133)                                           
8758 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:106)                                                             
8759 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.os.Looper.loopOnce(Looper.java:201)                                                                      
8760 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:288)
8761 05-29 05:00:16.259   921   921 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:7872)
8762 05-29 05:00:16.259   921   921 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Native Method)
8763 05-29 05:00:16.259   921   921 E AndroidRuntime:    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)

已确认的配置信息 #

• 库文件路径与权限：

rpi4:/ # ls -l vendor/lib64/libjavanativetestservice_jni.so
-rw-r--r-- 1 root root 10952 2023-05-29 15:40 vendor/lib64/libjavanativetestservice_jni.so

• 已将库名添加到公共库列表：

rpi4:/ # cat vendor/etc/public.libraries.txt
libjavanativetestservice_jni.so

• 设备Makefile配置：

PRODUCT_PACKAGES += JavaNativeTestService
PRODUCT_COPY_FILES += \
   vendor/alvenan/aosp_bench/bench_test_jni/public.libraries.txt:$(TARGET_COPY_OUT_VENDOR)/etc/public.libraries.txt

完整代码可参考我的GitHub仓库中bench_test_jni模块，使用的基础项目为ARPI13。

恳请协助排查该异常的原因及解决办法。

内容的提问来源于stack exchange，提问作者Álison Venâncio