应用程序中的Android JNI DETECTED ERROR：JNI GetMethodID被调用挂起异常 [英] Android JNI DETECTED ERROR IN APPLICATION: JNI GetMethodID called with pending exception

问题描述

我正在尝试用我的android项目运行Googles OCR Tesseract。我已经用android-ndk编写了tesseract，并在我尝试运行android项目后收到此错误。

I'm trying to run a Googles OCR Tesseract with my android project. I have already complied tesseract with android-ndk and am receiving this error after I try and run the android project.

我的环境如下

• Android 5.1.1


• android-ndk-r10e for windows


• android-sdk-r22

供参考，我是根据此处列出的示例构建的示例链接

For reference, I'm building from an example that is listed here Example Link

提前致谢！

以下是我的logcat结果的片段：

Here is a snippet of my logcat result:

  I/DEBUG   (  182): Revision: '0'
    I/DEBUG   (  182): ABI: 'arm'
    I/DEBUG   (  182): pid: 20291, tid: 20337, name: JavaBridge  >>> com.enterprisem
    obility.OCR <<<
    I/DEBUG   (  182): signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
    I/DEBUG   (  182): Abort message: 'art/runtime/check_jni.cc:65] JNI DETECTED ERR
    OR IN APPLICATION: JNI GetMethodID called with pending exception 'java.lang.NoSu
    chFieldError' thrown in void com.googlecode.tesseract.android.TessBaseAPI.native
    ClassInit():-2'
    I/DEBUG   (  182):     r0 00000000  r1 00004f71  r2 00000006  r3 00000000
    I/DEBUG   (  182):     r4 a0701db8  r5 00000006  r6 0000000b  r7 0000010c
    I/DEBUG   (  182):     r8 00000000  r9 b486f520  sl a1c0ac00  fp 00000001
    I/DEBUG   (  182):     ip 00004f71  sp a07006d8  lr b6e503c5  pc b6e72f6c  cpsr
    60070010
    I/DEBUG   (  182):
    I/DEBUG   (  182): backtrace:
    I/DEBUG   (  182):     #00 pc 00039f6c  /system/lib/libc.so (tgkill+12)
    I/DEBUG   (  182):     #01 pc 000173c1  /system/lib/libc.so (pthread_kill+52)
    I/DEBUG   (  182):     #02 pc 00017fd3  /system/lib/libc.so (raise+10)
    I/DEBUG   (  182):     #03 pc 00014795  /system/lib/libc.so (__libc_android_abor
    t+36)
    I/DEBUG   (  182):     #04 pc 00012f44  /system/lib/libc.so (abort+4)
    I/DEBUG   (  182):     #05 pc 00228cd7  /system/lib/libart.so (art::Runtime::Abo
    rt()+170)
    I/DEBUG   (  182):     #06 pc 000a7371  /system/lib/libart.so (art::LogMessage::
    ~LogMessage()+1360)
    I/DEBUG   (  182):     #07 pc 000b1b17  /system/lib/libart.so (art::JniAbort(cha
    r const*, char const*)+1118)
    I/DEBUG   (  182):     #08 pc 000b2055  /system/lib/libart.so (art::JniAbortF(ch
    ar const*, char const*, ...)+68)
    I/DEBUG   (  182):     #09 pc 000b530f  /system/lib/libart.so (art::ScopedCheck:
    :ScopedCheck(_JNIEnv*, int, char const*)+1346)
    I/DEBUG   (  182):     #10 pc 000b7755  /system/lib/libart.so (art::CheckJNI::Ge
    tMethodID(_JNIEnv*, _jclass*, char const*, char const*)+36)
    I/DEBUG   (  182):     #11 pc 001332f7  /data/app/com.enterprisemobility.OCR-1/l
    ib/arm/libtess.so (Java_com_googlecode_tesseract_android_TessBaseAPI_nativeClass
    Init+46)
    I/DEBUG   (  182):     #12 pc 0000614d  /data/dalvik-cache/arm/data@[e-mail]
    [e-mail]@classes.dex
    W/ActivityManager(  536):   Force finishing activity 1 com.enterprisemobility.OC
    R/.MainActivity
    I/DEBUG   (  182):
    I/DEBUG   (  182): Tombstone written to: /data/tombstones/tombstone_07

推荐答案

中止消息相对清楚：您为字段名称调用 GetFieldID（cls，fieldName）您传递给此函数的类中不存在，但您不检查该错误，并继续调用其他JNI函数。不幸的是，你不能忽视这些错误。在调用 GetMethodID（）或 most <之前，你必须调用 ExceptionClear（） JNI函数的/ em>。

The Abort message is relatively clear: you call GetFieldID(cls, fieldName) for a field name that does not exist in the class you pass to this function, but you don't check for that error, and continue to call other JNI functions. Unfortunately, you cannot ignore such errors. You must call ExceptionClear() before calling GetMethodID() or most of the JNI functions.

您可以使用 addr2line 查找对 getMethodID（）<的具体调用/ code>崩溃，并基于此，派生对 GetFieldID（cls，fieldName）的调用失败。但我建议在所有JNI调用中添加错误检查，因为明天其他一些函数可能会抛出异常。

You can use addr2line to find which specific call to getMethodID() crashed, and based on this, derive which call to GetFieldID(cls, fieldName) failed. But I would advise to add error checking to all your JNI calls, because tomorrow some other function may throw an exception.

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