在android中显示来自选定用户的查询

Question

我有以下片段，我想在其中显示来自当前用户关注的用户的查询。

public class FollowingFragment extends PostListFragment {

private static final String TAG = "FollowingFragment";

private String followingId = new String();

public FeedFragment() {}


@Override
public Query getQuery(DatabaseReference databaseReference) {
   
    return databaseReference.child("posts")
                         .orderByChild("uid").equalTo(followingId);
}

}

我不知道如何将用户的关注列表一一放在“关注”中。

我的 firebase 实时数据库是：

{
  "post-comments" : {
    "-MRA4RN-mbh4abKk8d77" : {
      "-MRsgJ9w8orEp2P8Au1K" : {
        "text" : "1st",
        "uid" : "asethasrhsrheglkjeg"
      },
      "-MRshp5kTzIVnfw1HiGX" : {
    
        "text" : "2nd\n2nd",
        "uid" : "asethasrhsrheglkjeg"
      },
      "-MRsiOdTVzJSIOpA1bkM" : {
    
        "text" : "s",
        "uid" : "asethasrhsrheglkjeg"
      }
    },
    "-MRDwB6Q_gS7durHeKUP" : {
      "-MRsiBS2iE3IIM2_Yd0l" : {
    
        "text" : "d",
        "uid" : "asethasrhsrheglkjeg"
      },
      "-MRsiByVH7fsDPKdgACg" : {
    
        "text" : "",
        "uid" : "asethasrhsrheglkjeg"
      },
      "-MRsiCKcIa9fhc1YDu3E" : {
    
        "text" : "",
        "uid" : "asethasrhsrheglkjeg"
      },
      "-MRsiCb5leJNnqa8-utQ" : {
    
        "text" : "",
        "uid" : "asethasrhsrheglkjeg"
      }
    }
  },
  "posts" : {
    "-MRA4RN-mbh4abKk8d77" : {
  
      "body" : "i am in pain",
      "starCount" : 0,
      "title" : "waba laba dub dub",
      "uid" : "asethasrhsrheglkjeg"
    },
    "-MRDwB6Q_gS7durHeKUP" : {
  
      "body" : "sdfgdsdfgfdg\n\n\n\n",
      "starCount" : 0,
      "title" : "zdfgvbdzfgbzdf\n\n\ndfgszdgzdgtfg",
      "uid" : "aworgiajerogjargjnb"
    },
    "-MRsdB34LPrRNPCMyToY" : {
  
      "body" : "sdfw",
      "starCount" : 0,
      "title" : "sdf",
      "uid" : "asethasrhsrheglkjeg"
    }
  },
  "users" : {
    "aworgiajerogjargjnb" : {},
    "aS04z1PoT0YsnQUBcZEpBe7JRhU2" : {},
    "asethasrhsrheglkjeg" : {
      "following" : {
        "aworgiajerogjargjnb" : true,
        "asethasrhsrheglkjeg" : true
      }
    }
  }
}

修改了数据库中的一些id。

现在，我想从用户节点获取“followingUsers”列表并显示“uid”等于“followingUsers”的帖子。