JNI WARNING: input is not valid Modified UTF-8

最近使用NDK进行项目开发过程中，debug模式下logcat输出以下错误（PS：正常run没有任何错误，JNI方法执行没有问题）：

05-28 13:48:10.422: W/dalvikvm(15024):              JNI WARNING: input is not valid Modified UTF-8: illegal start byte 0xa5
05-28 13:48:10.422: W/dalvikvm(15024):              string: 'h��n�@�3'
05-28 13:48:10.422: W/dalvikvm(15024):              in Lcom/sina/client/base/utils/Message;.decrypt:(Ljava/lang/String;)Ljava/lang/String; (NewStringUTF)

05-28 13:48:10.422: I/dalvikvm(15024): "main" prio=5 tid=1 NATIVE
05-28 13:48:10.422: I/dalvikvm(15024):   | group="main" sCount=0 dsCount=0 obj=0x415df700 self=0x400ca0b8
05-28 13:48:10.422: I/dalvikvm(15024):   | sysTid=15024 nice=0 sched=0/0 cgrp=apps handle=1075232560
05-28 13:48:10.422: I/dalvikvm(15024):   | schedstat=( 0 0 0 ) utm=38 stm=8 core=3
05-28 13:48:10.442: I/dalvikvm(15024):   #00  pc 00001260  /system/lib/libcorkscrew.so (unwind_backtrace_thread+27)
05-28 13:48:10.442: I/dalvikvm(15024):   #01  pc 0005ff8c  /system/lib/libdvm.so (dvmDumpNativeStack(DebugOutputTarget const*, int)+35)
05-28 13:48:10.442: I/dalvikvm(15024):   #02  pc 0005471e  /system/lib/libdvm.so (dvmDumpThreadEx(DebugOutputTarget const*, Thread*, bool)+289)
05-28 13:48:10.442: I/dalvikvm(15024):   #03  pc 000547ae  /system/lib/libdvm.so (dvmDumpThread(Thread*, bool)+25)
05-28 13:48:10.442: I/dalvikvm(15024):   #04  pc 0003aa3e  /system/lib/libdvm.so
05-28 13:48:10.442: I/dalvikvm(15024):   #05  pc 0003bcb8  /system/lib/libdvm.so
05-28 13:48:10.442: I/dalvikvm(15024):   #06  pc 0003dfda  /system/lib/libdvm.so
05-28 13:48:10.442: I/dalvikvm(15024):   #07  pc 000044e8  /data/data/com.donfer/lib/libdfclient.so (Java_com_donfer_client_base_utils_DFMessageFactory_decryptMsg+67)
05-28 13:48:10.442: I/dalvikvm(15024):   #08  pc 0001fb70  /system/lib/libdvm.so (dvmPlatformInvoke+112)
05-28 13:48:10.442: I/dalvikvm(15024):   #09  pc 0004e8b8  /system/lib/libdvm.so (dvmCallJNIMethod(unsigned int const*, JValue*, Method const*, Thread*)+359)
05-28 13:48:10.442: I/dalvikvm(15024):   #10  pc 00050600  /system/lib/libdvm.so (dvmResolveNativeMethod(unsigned int const*, JValue*, Method const*, Thread*)+171)
05-28 13:48:10.442: I/dalvikvm(15024):   #11  pc 0005fd74  /system/lib/libdvm.so (dvmCallMethodA(Thread*, Method const*, Object*, bool, JValue*, jvalue const*)+247)
05-28 13:48:10.442: I/dalvikvm(15024):   #12  pc 000457a6  /system/lib/libdvm.so (dvmDbgExecuteMethod(DebugInvokeReq*)+85)
05-28 13:48:10.442: I/dalvikvm(15024):   #13  pc 00061b14  /system/lib/libdvm.so
05-28 13:48:10.442: I/dalvikvm(15024):   #14  pc 00061d4c  /system/lib/libdvm.so (dvmJdwpPostLocationEvent(JdwpState*, JdwpLocation const*, unsigned long long, int)+359)
05-28 13:48:10.452: I/dalvikvm(15024):   #15  pc 000453e0  /system/lib/libdvm.so (dvmDbgPostLocationEvent(Method const*, int, Object*, int)+75)
05-28 13:48:10.452: I/dalvikvm(15024):   #16  pc 0002d580  /system/lib/libdvm.so (dvmCheckBefore+504)
05-28 13:48:10.452: I/dalvikvm(15024):   #17  pc 000237fc  /system/lib/libdvm.so
05-28 13:48:10.452: I/dalvikvm(15024):   #18  pc 0002d7e8  /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+180)
05-28 13:48:10.452: I/dalvikvm(15024):   #19  pc 0006017e  /system/lib/libdvm.so (dvmInvokeMethod(Object*, Method const*, ArrayObject*, ArrayObject*, ClassObject*, bool)+373)
05-28 13:48:10.452: I/dalvikvm(15024):   #20  pc 00067124  /system/lib/libdvm.so
05-28 13:48:10.452: I/dalvikvm(15024):   #21  pc 00029020  /system/lib/libdvm.so
05-28 13:48:10.452: I/dalvikvm(15024):   #22  pc 0002d7e8  /system/lib/libdvm.so (dvmInterpret(Thread*, Method const*, JValue*)+180)
05-28 13:48:10.452: I/dalvikvm(15024):   #23  pc 0005fed4  /system/lib/libdvm.so (dvmCallMethodV(Thread*, Method const*, Object*, bool, JValue*, std::__va_list)+271)
05-28 13:48:10.452: I/dalvikvm(15024):   #24  pc 0004aee6  /system/lib/libdvm.so
05-28 13:48:10.452: I/dalvikvm(15024):   #25  pc 00048c72  /system/lib/libandroid_runtime.so
05-28 13:48:10.452: I/dalvikvm(15024):   #26  pc 00049690  /system/lib/libandroid_runtime.so (android::AndroidRuntime::start(char const*, char const*)+367)
05-28 13:48:10.452: I/dalvikvm(15024):   #27  pc 00000dce  /system/bin/app_process
05-28 13:48:10.452: I/dalvikvm(15024):   #28  pc 00017190  /system/lib/libc.so (__libc_init+35)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.utils.DFMessageFactory.decryptMsg(Native Method)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.project.ActivityWelcome.onError(ActivityWelcome.java:-1)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.DFActivityBase.onError(DFActivityBase.java:600)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.DFActivityBase$3.onError(DFActivityBase.java:124)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.io.DFHttpTask.onError(DFHttpTask.java:100)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.io.DFHttpTask.onPostExecute(DFHttpTask.java:91)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.donfer.client.base.io.DFHttpTask.onPostExecute(DFHttpTask.java:1)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.os.AsyncTask.finish(AsyncTask.java:631)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.os.AsyncTask.access$600(AsyncTask.java:177)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.os.Handler.dispatchMessage(Handler.java:99)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.os.Looper.loop(Looper.java:137)
05-28 13:48:10.452: I/dalvikvm(15024):   at android.app.ActivityThread.main(ActivityThread.java:4875)
05-28 13:48:10.452: I/dalvikvm(15024):   at java.lang.reflect.Method.invokeNative(Native Method)
05-28 13:48:10.452: I/dalvikvm(15024):   at java.lang.reflect.Method.invoke(Method.java:511)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:804)
05-28 13:48:10.452: I/dalvikvm(15024):   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:571)
05-28 13:48:10.452: I/dalvikvm(15024):   at dalvik.system.NativeStart.main(Native Method)
05-28 13:48:10.452: E/dalvikvm(15024): VM aborting
05-28 13:48:10.452: A/libc(15024): Fatal signal 11 (SIGSEGV) at 0xdeadd00d (code=1), thread 15024 (com.donfer)

网上看了很多帖子都说是编码的问题，需要修改CheckJNI.c

后来开始怀疑NDK的版本问题，本人使用的NDK为：android-ndk-r9-darwin-x86_64.tar.bz2。

于是去官网看了下NDK的版本修复记录，发现正好本人的NDK版本是在bug修复前下载的，于是果断下载最新的NDK。

Google官方网站：http://developer.android.com/tools/sdk/ndk/index.html

Android NDK, Revision 9c (December 2013)

This is a bug-fix-only release.

Important bug fixes:

• Fixed a problem with Check_ReleaseStringUTFChars in /system/lib/libdvm.so that was causing crashes on x86 devices.