Structure array elements must use contiguous memory (bad backing address at Stru

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JNA以结构体数组为参数进行调用:

 

////// C++
// student 结构体定义
typedef struct  
{
	int age;
	char name[20];
}Student;

// 修改java对象的属性值
JNAAPI bool changeObjs(Student stu[],int size)
{
	for(int i=0;i 
 
 
 
 
   运行报错:
 
 
        Structure array elements must use contiguous memory (bad backing address at Structure array index 1)
 
 
   结构体数组必须使用连续的内存区域, 上例s1,s2都是new出来的新对象,不可能连续; 也就是说传统方式的初始化数组不能解决, 查询JNA api发现里面提供了: 
 
 
 
 
 
toArray
 
 
public Structure[] toArray(int size)
 
 

   Returns a view of this structure's memory as an array of structures. Note that this 
  Structure must have a public, no-arg constructor. If the structure is currently using a 
  Memory backing, the memory will be resized to fit the entire array. 
 
 
 

     
 
 
 
 修改后的代码:
 
 
// 测试对象数组
Student student=new Student();
Student[] stus=(Student[]) student.toArray(2); //分配大小为2的结构体数组
stus[0].age=1;
stus[0].name=Arrays.copyOf("k1".getBytes(), 20);
stus[1].age=2;
stus[1].name=Arrays.copyOf("k2".getBytes(),20);
Gui.gui.changeObjs(stus, stus.length);