其中，楼主的代码可以下来运行一下，我在2.2和2.3模拟器和2.3的真机上都存在这个问题。
问题的核心在于这样一句话：JNI WARNING: jarray 0x4074f6e0 points to non-array object (Ljava/lang/String;)
也就是进行JNI调用时，把一个Java中的String对象当数组来访问了，最终导致虚拟机崩溃。
对这个问题进行跟踪时，费了很大的劲，所以先记录一下跟踪过程。
12-20 19:29:34.582: WARN/dalvikvm(725): JNI WARNING: jarray 0x4074f6e0 points to non-array object (Ljava/lang/String;)
12-20 19:29:34.622: INFO/dalvikvm(725): "WebViewCoreThread" prio=5 tid=9 NATIVE
12-20 19:29:34.622: INFO/dalvikvm(725): | group="main" sCount=0 dsCount=0 obj=0x40521328 self=0x26bea8
12-20 19:29:34.622: INFO/dalvikvm(725): | sysTid=734 nice=0 sched=0/0 cgrp=default handle=2539488
12-20 19:29:34.632: INFO/dalvikvm(725): | schedstat=( 5341953614 5808331660 581 )
12-20 19:29:34.632: INFO/dalvikvm(725): at android.webkit.WebViewCore.nativeTouchUp(Native Method)
12-20 19:29:34.632: INFO/dalvikvm(725): at android.webkit.WebViewCore.nativeTouchUp(Native Method)
12-20 19:29:34.642: INFO/dalvikvm(725): at android.webkit.WebViewCore.access$3300(WebViewCore.java:53)
12-20 19:29:34.652: INFO/dalvikvm(725): at android.webkit.WebViewCore$EventHub$1.handleMessage(WebViewCore.java:1158)
12-20 19:29:34.652: INFO/dalvikvm(725): at android.os.Handler.dispatchMessage(Handler.java:99)
12-20 19:29:34.652: INFO/dalvikvm(725): at android.os.Looper.loop(Looper.java:123)
12-20 19:29:34.652: INFO/dalvikvm(725): at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:629)
12-20 19:29:34.662: INFO/dalvikvm(725): at java.lang.Thread.run(Thread.java:1019)
12-20 19:29:34.672: ERROR/dalvikvm(725): VM aborting
12-20 19:29:34.852: INFO/DEBUG(30): Build fingerprint: 'generic/sdk/generic:2.3/GRH55/79397:eng/test-keys'
12-20 19:29:34.862: INFO/DEBUG(30): pid: 725, tid: 734 >>> XXXXXXXX <<<
12-20 19:29:34.862: INFO/DEBUG(30): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr deadd00d
12-20 19:29:34.872: INFO/DEBUG(30): r0 fffffebc r1 deadd00d r2 00000026 r3 00000000
12-20 19:29:34.872: INFO/DEBUG(30): r4 81da45c8 r5 4074f6e0 r6 81d8592c r7 0026d2b8
12-20 19:29:34.872: INFO/DEBUG(30): r8 44174b54 r9 43d72e4c 10 43d72e34 fp 41edd82c
12-20 19:29:34.891: INFO/DEBUG(30): ip 81da4728 sp 44174348 lr afd19375 pc 81d45a02 cpsr 20000030
12-20 19:29:35.912: INFO/DEBUG(30): #00 pc 00045a02 /system/lib/libdvm.so
12-20 19:29:35.912: INFO/DEBUG(30): #01 pc 000376fc /system/lib/libdvm.so
12-20 19:29:35.912: INFO/DEBUG(30): #02 pc 000399c4 /system/lib/libdvm.so
12-20 19:29:35.922: INFO/DEBUG(30): #03 pc 0003a4a0 /system/lib/libdvm.so
12-20 19:29:35.932: INFO/DEBUG(30): #04 pc 0032b6d6 /system/lib/libwebcore.so
12-20 19:29:35.952: INFO/DEBUG(30): #05 pc 002a4da4 /system/lib/libwebcore.so
12-20 19:29:35.952: INFO/DEBUG(30): #06 pc 001a6136 /system/lib/libwebcore.so
12-20 19:29:35.952: INFO/DEBUG(30): #07 pc 002a5870 /system/lib/libwebcore.so
12-20 19:29:35.962: INFO/DEBUG(30): #08 pc 00359e36 /system/lib/libwebcore.so
12-20 19:29:35.972: INFO/DEBUG(30): #09 pc 0035d18e /system/lib/libwebcore.so
12-20 19:29:35.972: INFO/DEBUG(30): #10 pc 0036b078 /system/lib/libwebcore.so
12-20 19:29:35.982: INFO/DEBUG(30): #11 pc 003627ac /system/lib/libwebcore.so
12-20