我需要帮助将二进制数据传递给

Java.我正在尝试使用jbytearray但是当数据进入Java时它看起来很糟糕.有人可以帮我一把吗？

这是一些示例代码的片段.首先是原生C面：

printf("Building audio array copy\n");

jbyteArray rawAudioCopy = env->NewByteArray(10);

jbyte toCopy[10];

printf("Filling audio array copy\n");

char theBytes[10] = {0,1,2,3,4,5,6,7,8,9};

for (int i = 0; i < sizeof(theBytes); i++) {

toCopy[i] = theBytes[i];

}

env->SetByteArrayRegion(rawAudioCopy,0,10,toCopy);

printf("Finding object callback\n");

jmethodID aMethodId = env->GetMethodID(env->GetObjectClass(obj),"handleAudio","([B)V");

if(0==aMethodId) throw MyRuntimeException("Method not found error",99);

printf("Invoking the callback\n");

env->CallVoidMethod(obj,aMethodId, &rawAudioCopy);

然后是Java回调方法：

public void handleAudio(byte[] audio){

System.out.println("Audio supplied to Java [" + audio.length + "] bytes");

byte[] expectedAudio = {0,1,2,3,4,5,6,7,8,9};

for (int i = 0; i < audio.length; i++) {

if(audio[i]!= expectedAudio[i])

System.err.println("Expected byte " + expectedAudio[i]

+ " at byte " + i + " but got byte " + audio[i]);

else System.out.print('.');

}

System.out.println("Audio passed back accordingly!");

}

调用回调时,我得到以下输出：

library loaded!

Audio supplied to Java [-2019659176] bytes

Audio passed back accordingly!