致命异常:在机器人工作室库主要java.lang.UnsatisfiedLinkError中 [英] FATAL EXCEPTION: main java.lang.UnsatisfiedLinkError in Android Studio library

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问题描述

我在我的Andr​​oid Studio项目的l​​ibs文件夹添加FDxSDKProAndroid.jar文件。此外,在build.gradle文件中添加相关性。

 相关性{
    编译com.android.support:support-v4:18.0.0
    编译com.google.android.gms:播放服务:4.0.30
    编译文件(库/ FDxSDKProAndroid.jar)
}
 

项目建立正常,没有任何错误,但onRuntime我得到了下面的错误,如何解决这个问题?

错误的下面一行发生,

  sgfplib =新JSGFPLib((UsbManager)getSystemService(Context.USB_SERVICE));
 

错误:

  12-04 13:35:13.022 12345-12345 /? E / AndroidRuntime:致命异常:主要
    java.lang.UnsatisfiedLinkError中:无法从装载机dalvik.system.PathClassLoader [DexPathList [dexElements = [zip文件加载jnisgfplib "/data/app/com.mycompany.mytrack-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.mycompany.mytrack-1, /供应商/ lib中/系统/ lib目录]]]:findLibrary返回null
            在java.lang.Runtime.loadLibrary(Runtime.java:359)
            在java.lang.System.loadLibrary(System.java:514)
            在SecuGen.FDxSDKPro.JSGFPLib< clinit>(JSGFPLib.java:150)
            在com.mycompany.mytrack.FingerPrintActivity.onCreate(FingerPrintActivity.java:105)
            在android.app.Activity.performCreate(Activity.java:5122)
            在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
            在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
            在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
            在android.app.ActivityThread.access $ 600(ActivityThread.java:156)
            在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1340)
            在android.os.Handler.dispatchMessage(Handler.java:99)
            在android.os.Looper.loop(Looper.java:153)
            在android.app.ActivityThread.main(ActivityThread.java:5297)
            在java.lang.reflect.Method.invokeNative(本机方法)
            在java.lang.reflect.Method.invoke(Method.java:511)
            在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:833)
            在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
            在dalvik.system.NativeStart.main(本机方法)
12-04 13:35:13.033 511-529 /? E / AppErrorDialog:无法获得ILowStorageHandle实例
 

解决方案

它看起来像它试图加载本机库,并没有在Android的摇篮支持原生code呢。你应该仔细检查用于文档库中,以确认;我试图寻找它,但它看起来就像是没有公开访问的文档商业库。

I added FDxSDKProAndroid.jar file in libs folder of my project in android studio. Also added dependency in build.gradle file.

dependencies {
    compile 'com.android.support:support-v4:18.0.0'
    compile 'com.google.android.gms:play-services:4.0.30'
    compile files('libs/FDxSDKProAndroid.jar')
}

Project builds properly without any error but onRuntime I got following error,How to resolve this error?

Error occured in following line,

sgfplib=new JSGFPLib((UsbManager)getSystemService(Context.USB_SERVICE));

Error:

12-04 13:35:13.022  12345-12345/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
    java.lang.UnsatisfiedLinkError: Couldn't load jnisgfplib from loader dalvik.system.PathClassLoader[DexPathList[dexElements=[zip file "/data/app/com.mycompany.mytrack-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.mycompany.mytrack-1, /vendor/lib, /system/lib]]]: findLibrary returned null
            at java.lang.Runtime.loadLibrary(Runtime.java:359)
            at java.lang.System.loadLibrary(System.java:514)
            at SecuGen.FDxSDKPro.JSGFPLib.<clinit>(JSGFPLib.java:150)
            at com.mycompany.mytrack.FingerPrintActivity.onCreate(FingerPrintActivity.java:105)
            at android.app.Activity.performCreate(Activity.java:5122)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
            at android.app.ActivityThread.access$600(ActivityThread.java:156)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:153)
            at android.app.ActivityThread.main(ActivityThread.java:5297)
            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:833)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
            at dalvik.system.NativeStart.main(Native Method)
12-04 13:35:13.033      511-529/? E/AppErrorDialog﹕ Failed to get ILowStorageHandle instance

解决方案

It looks like it's trying to load a native library, and there isn't support in Android Gradle for native code yet. You should double-check the docs for your library to confirm; I tried to look it up but it looks like it's a commercial library without publicly accessible docs.

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