南通高端网站设计开发,做网站的客户资料交换qq群,自助建子站,如何增加网站转化率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#xff1f;这是一些示例代码的片段.首先是原生C面#xff1a;printf(Building audio array copy\n);jbyteArray rawAudioCopy env-NewBy…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(0aMethodId) 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] bytesAudio passed back accordingly!
