logcat报错如下
03-31 12:15:57.291 947 947 E AndroidRuntime: FATAL EXCEPTION: main
03-31 12:15:57.291 947 947 E AndroidRuntime: Process: com.nushine.nshlbus, PID: 947
03-31 12:15:57.291 947 947 E AndroidRuntime: java.lang.UnsatisfiedLinkError: dlopen failed: library "/system/lib/libKdCan.so" needed or dlopened by "/system/lib/libnativeloader.so" is not accessible for the namespace "classloader-namespace"
03-31 12:15:57.291 947 947 E AndroidRuntime: at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
03-31 12:15:57.291 947 947 E AndroidRuntime: at java.lang.System.loadLibrary(System.java:1657)
03-31 12:15:57.291 947 947 E AndroidRuntime: at imax.can.CanOperation.<init>(CanOperation.java:19)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverHard.Can.Can.<init>(Can.java:39)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverJ1939.DriverJ1939.<init>(DriverJ1939.java:20)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverProtocol.DriverProtocol.<init>(DriverProtocol.java:36)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverServer.DriverCfg.<init>(DriverCfg.java:15)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverServer.DriverManager.DriverInit(DriverManager.java:205)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.nushine.nshlbus.com.driverlayer.os_driverServer.DriverManager.onCreate(DriverManager.java:244)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.app.ActivityThread.handleCreateService(ActivityThread.java:3420)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.app.ActivityThread.access$2300(ActivityThread.java:176)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1686)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:105)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.os.Looper.loop(Looper.java:164)
03-31 12:15:57.291 947 947 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:6600)
03-31 12:15:57.291 947 947 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
03-31 12:15:57.291 947 947 E AndroidRuntime: at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
原因是libKdCan.so找不到
解决方法：
修改system/core/rootdir/etc/public.libraries.android.txt（注：这个是系统源码路径）
添加你要使用的的so到此问题件中。
也可以直接不编译在板子上修改，对应目录/system/etc
一、先cat
/system/etc:~$ cat public.libraries.txt
….
libwebviewchromium_plat_support.so
libz.so
二、用echo添加
/system/etc:~$echo “libKdCan.so” >> public.libraries.txt
三、再cat一下确认已经加入
/system/etc:~$ cat public.libraries.txt
….
libwebviewchromium_plat_support.so
libz.so
libKdCan.so
注：
echo
1.覆盖 echo “” >文件名
2.追加 echo “” >>文件名