Sugar查询多列

Question

这是我的糖类orm项目的模型类，我应该如何查询并获得列表中的所有"num“值，就像我能够使用query => List<> all =Attend.listAll(Attend.class)来查询”标题“一样；

public class Attend extends SugarRecord{
String title;
int num;

public Attend() {
}
public Attend(String title, int num) {
    this.title = title;

    this.num = num;


}

public String getTitle() {
    return title;
}


public void setTitle(String title) {
    this.title = title;
}

public int getNum() {
    return num;
}


public void setNum(int num) {
    this.num = num;
}

@Override
public String toString() {
    return   title  ;
}}

Answer 1

这里有一种方法：

List<Attend> attends = Attend.listAll(Attend.class);

List<Integer> nums = new ArrayList<>();

for (Attend attend : attends)
   nums.add(attend.getNum());

Answer 2

不，你不能从sugarorm到list中检索单个列，Sugar ORM github问题页面上说，它将被添加到1.6.0版本，当前的sugar ORM版本是1.4.0。Source