我遇到了以下问题:我无法在C代码中处理
byte[](jbyteArray)
。使用JNI中与数组相关的所有函数都会导致JNI DETECTED ERROR IN APPLICATION: jarray argument has non-array type
错误。我的代码有什么问题吗?#include <stdio.h>
#include <jni.h>
static jstring convertToHex(JNIEnv* env, jbyteArray array) {
int len = (*env)->GetArrayLength(env, array);// cause an error;
return NULL;
}
static JNINativeMethod methods[] = {
{"convertToHex", "([B)Ljava/lang/String;", (void*) convertToHex },
};
JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
JNIEnv* env = NULL;
if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_4) != JNI_OK) {
return -1;
}
jclass cls = (*env)->FindClass(env, "com/infomir/stalkertv/server/ServerUtil");
(*env)->RegisterNatives(env, cls, methods, sizeof(methods)/sizeof(methods[0]) );
return JNI_VERSION_1_4;
}
服务器工具:
public class ServerUtil {
public ServerUtil() {
System.loadLibrary("shadow");
}
public native String convertToHex(byte[] array);
}
主活动:
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ServerUtil serverUtil = new ServerUtil();
byte[] a = new byte[]{1,2,3,4,5};
String s = serverUtil.convertToHex(a);
}
}
我的环境:
- Android Studio 2.0
- 实验性 Gradle 插件 0.7.0
- JAVA 1.8
- NDK r11b
- Windows 10 x64
提前感谢!