（原）不明白JNI指针调用顺序

很不明白JNI里面获取指针的顺序（可能这样描述不太恰当吧）。

下面按照传入指针的顺序的代码一跑就崩溃。如下：

 1 JNIEXPORT jint JNICALL Java_com_example_X_XX_XXX

 2   (JNIEnv * env, jclass, jbyteArray databuf, jint width, jint height, jstring path, jintArray x1)

 3 {

 4     jboolean* pArraydata = (jboolean*)env->GetPrimitiveArrayCritical(databuf, 0);

 5     char* pApath=env->GetStringUTFChars(path,0);

 6     jint* pAx1 = (jint*)env->GetPrimitiveArrayCritical(x1, 0);

 7 

 8     // code;

 9 

10     env->ReleasePrimitiveArrayCritical(databuf, pArraydata, 0);

11     env->ReleaseStringUTFChars(path, pApath);

12     env->ReleasePrimitiveArrayCritical(x1, pAx1, 0);

13 

14     return eyedist;

15 }

之后将获取指针的顺序稍微修改了一下，然后就可以跑过去了。如下：

 1 JNIEXPORT jint JNICALL Java_com_example_X_XX_XXX

 2   (JNIEnv * env, jclass, jbyteArray databuf, jint width, jint height, jstring path, jintArray x1)

 3 {

 4     jboolean* pArraydata = (jboolean*)env->GetPrimitiveArrayCritical(databuf, 0);

 5     jint* pAx1 = (jint*)env->GetPrimitiveArrayCritical(x1, 0);

 6     char* pApath=env->GetStringUTFChars(path,0);

 7 

 8     // code;

 9 

10     env->ReleasePrimitiveArrayCritical(databuf, pArraydata, 0);

11     env->ReleasePrimitiveArrayCritical(x1, pAx1, 0);

12     env->ReleaseStringUTFChars(path, pApath);

13 

14     return eyedist;

15 }