android 2.3 版本运行完patch后崩溃

在os 2.3 版本的手机上兼容得不好，我测试了三部 2.3 手机，都能够运行patch，但运行结束后都会出现异常，java.lang.RuntimeException: Unable to start activity ComponentInfo{com.euler.andfix/com.euler.andfix.MainActivity}: java.lang.NullPointerException: null result when primitive expected。接着程序就挂掉了。我看了下jni文件夹下的dalvik_method_replace.cpp，应该是returnType = dvmGetBoxedReturnType_fnPtr(method);这里面的 returnType 返回的是null, 而我们期待它返回的是 PRIM_VOID，所以挂掉了。为什么会这样？有什么解决办法吗？

Start with jni/dalvik_method_replace.cpp and reproduce the crash on an Android 2.3 device after a patch completes. Inspect why dvmGetBoxedReturnType_fnPtr(method) returns null instead of PRIM_VOID, then verify that the patched application finishes without the reported NullPointerException.

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