我需要幫助將二進(jìn)制數(shù)據(jù)傳遞給

Java.我正在嘗試使用jbytearray但是當(dāng)數(shù)據(jù)進(jìn)入Java時(shí)它看起來(lái)很糟糕.有人可以幫我一把嗎？

這是一些示例代碼的片段.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回調(diào)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!");

}

調(diào)用回調(diào)時(shí),我得到以下輸出：

library loaded!

Audio supplied to Java [-2019659176] bytes

Audio passed back accordingly!

總結(jié)

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