Question

是否可以像这样在适配器中添加2个对象类？

public Adapter(Context context, List<ObjectItem> objectItem, List<ObjectItem2> objectItem2) {

}

这是示例代码：我要用嵌套的json数组解析json，所以第一个json就像：

dataJsonArr = json.getJSONArray("data");
for (int i = 0; i < dataJsonArr.length(); i++) {

    JSONObject c = dataJsonArr.getJSONObject(i);            
    ObjectItem item = new ObjectItem();
    item.setUserid(userid);
    item.setProfilePic(profile_photo);
    item.setName(profile_name);

    int jKomen = c.getJSONArray("comment_note").length();
    if(c.getJSONArray("comment_note").length() > 0) {
         commentNoteJsonArr = c.getJSONArray("comment_note");
         for (int j = 0; j < commentNoteJsonArr.length(); j++) {
               JSONObject d = commentNoteJsonArr.getJSONObject(j);
               String pName2 = d.isNull("profile_name") ? null : d.getString("profile_name");
               item.setName2(pName2);
               String pComment2 = d.isNull("content_comment") ? null : d.getString("content_comment");
               item.setComment2(pComment2);
         }
}
item.setLevel(Level.LEVEL_ONE);
Items.add(item);
}

这是在解析上面的json代码之后的第二个代码：

dataJsonArr = json.getJSONArray("data");
for (int i = 0; i < dataJsonArr.length(); i++) {
     JSONObject c = dataJsonArr.getJSONObject(i);

     ObjectItem2 item2 = new ObjectItem2();
     item2.setId(c.getString("id_note"));
     int jKomen = c.getJSONArray("comment_note").length();
     if(c.getJSONArray("comment_note").length() > 0) {
          commentNoteJsonArr = c.getJSONArray("comment_note");
          for (int j = 0; j < commentNoteJsonArr.length(); j++) {
               JSONObject d = commentNoteJsonArr.getJSONObject(j);

               item2.setUserid(d.getString("userid"));
               item2.setProfilePic(d.getString("profile_photo"));
               item2.setName(d.getString("profile_name"));
          }
}
item2.setLevel(Level.LEVEL_TWO);
Items2.add(item2);
}

适配器：

adapter.notifyDataSetChanged();

所以，我想将对象Items和Items2添加到适配器。那么我应该怎么做才能清除它？提前致谢

Answer 1

创建界面

public interface DispayItem {

}

现在创建实现DispayItem接口的类

public class Class1 implements DispayItem {
    private int id;
    private String label;

    private Class1 () {
    }

    public static Class1 create( int id, String label ) {
        Class1 section = new Class1 ();
        section.setLabel(label);
        return section;
    }
}

的Class2

public class Class2 implements DispayItem {
    private int id;
    private String label;

    private Class2 () {
    }

    public static Class2 create( int id, String label ) {
        Class2 section = new Class2 ();
        section.setLabel(label);
        return section;
    }
}

添加可以将其用作

的项目

 DisplayItem[] displayItem= new DisplayItem[] {
                Class1.create( 100, "Class1"),
                Class2.create(101,"Class2"),
             };

您的适配器中的

 public MyAdapter(Context context, int textViewResourceId, DisplayItem[] objects ) {
        super(context, textViewResourceId, objects);
        this.inflater = LayoutInflater.from(context);
    }

使用getView int adapter

@Override
public View getView(int position, View convertView, ViewGroup parent) {

DisplayItem displayItem = this.getItem（position）;

if(displayItem instanceof Class1){
//do work for class 1
 view = getItemView(convertView, parent, menuItem );
}
else if(displayItem instanceof Class2){
//do work for class 2
 view = getItemView(convertView, parent, menuItem );}

}
return view;}

是否可以在适配器中添加2个对象？

1 个答案: