Java 如何接收kernel传过来的数组(推荐)_Java

如接收float 类型数组，jni 定义jfloatarray 类型数据通过env->releasefloatarrayelements 将float 数据拷贝成jfloatarray类型
jni 部分：

static jfloatarray tempmlssensorread_native(jnienv* env , jobject /* clazz */,jint length){
     float * address=(float *)g_device->mlx90640_read(g_device);
           float *example =new float [768]{};
           for(int i=0;i<768;i++){
               example[i]=address[i];
           }
           jfloatarray copyarray = env->newfloatarray(768);
           env->releasefloatarrayelements(copyarray,example,0);
    return copyarray;
}
static const jninativemethod method_table[] = {
  { "nativetempmlssensoropen", "()i", (void*)tempmlssensoropen_native },
  { "nativetempmlssensorwrite", "(i)i", (void*)tempmlssensorwrite_native },
+ { "nativetempmlssensorread", "(i)[f", (void*)tempmlssensorread_native },
  { "nativetempmlssensorreadvalue", "()i", (void*)tempmlssensorread_native_value },
  { "nativetempmlssensorioctl", "(ii)i", (void*)tempmlssensorioctl_native },
  { "nativetempmlssensorclose", "()i", (void*)tempmlssensorclose_native },

aidl 接口添加float 数组类型

interface itempmlssensor {
    int tempmlssensoropen();
    int tempmlssensorwrite(int value);
 +  float[] tempmlssensorread(int length);
    int tempmlssensorreadvalue();
    int tempmlssensorioctl(int cmd, int value);
    int tempmlssensorclose();
}

java 类型数组类型

    @override
  +  public float[] tempmlssensorread(int length) throws android.os.remoteexception{
  +          return nativetempmlssensorread(length);
  + }
    public static native int nativetempmlssensoropen();
    public static native int nativetempmlssensorwrite(int value);
  +  public static native float [] nativetempmlssensorread(int length);
    public static native int nativetempmlssensorreadvalue();
    public static native int nativetempmlssensorioctl(int cmd,int value);
    public static native int nativetempmlssensorclose();

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