我正在尝试编译我的jnicode它显示错误_JNIEnv :: GetShortArrayElements（JNIEnv *＆amp;，_jshortArray *＆amp;，int）'

Question

我正在尝试编译我的jnicode，显示错误

_JNIEnv::GetShortArrayElements(JNIEnv*&, _jshortArray*&, int)'

我的代码是：

extern "C" JNIEXPORT jint Java_com_techgentsia_sound_Opusmain_nativeDecodeBytes (JNIEnv *env, jobject thiz,jbyteArray decoder_insrc,jshortArray decoder_out)
{
    int frame_size=320;

    jshort* pcm_data_decoder=env->GetShortArrayElements(env, decoder_out,0);

    jbyte* opus_data_decoder=env->GetByteArrayElements(env, decoder_insrc,0);  
}

编译器中的错误是：

/home/clifford/opusbuild/jni/opus/com_techgentsia_sound_Opusmain.cpp:117:72: error: no matching function for call to '_JNIEnv::GetShortArrayElements(JNIEnv*&, _jshortArray*&, int)'
/home/clifford/opusbuild/jni/opus/com_techgentsia_sound_Opusmain.cpp:117:72: note: candidate is:
/home/clifford/apps/android-ndk-r10/platforms/android-9/arch-arm/usr/include    /jni.h:921:13: note: jshort* _JNIEnv::GetShortArrayElements(jshortArray, jboolean*)
/home/clifford/apps/android-ndk-r10/platforms/android-9/arch-arm/usr/include/jni.h:921:13: note:   candidate expects 2 arguments, 3 provided

Answer 1

我解决了问题，如下所示更改代码。

                                                                                                                          extern "C" JNIEXPORT jint Java_com_techgentsia_sound_Opusmain_nativeDecodeBytes (JNIEnv *env, jobject thiz,jbyteArray decoder_insrc,jshortArray decoder_out)

{     int frame_size = 320;

jshort* pcm_data_decoder=env->GetShortArrayElements( decoder_out,0);

jbyte* opus_data_decoder=env->GetByteArrayElements( decoder_insrc,0);  

}

我们不想通过这种方法传递env  GetShortArrayElements（decoder_out，0）;  GetByteArrayElements（decoder_insrc，0）;
因为我正在写cpp类