java - Android Fragment 上的 ListView 错误

Question

请帮助我，我在 onCreate 中遇到这样的错误

该行有多个标记

• 未为 FindPeopleFragment 类型定义 setContentView(View) 方法
• 构造函数 View(int) 未定义

ListView中的第二个错误，像这样的错误

• rootView 无法解析

适配器中的第三个错误，如下错误

• 构造函数 SimpleAdapter(FindPeopleFragment, ArrayList>, int, String[], int[]) 是未定义

请帮我解决这个问题

FindPeopleFragment.java

import android.os.Bundle;
import android.app.Activity;
import android.app.Fragment;

import java.util.ArrayList;
import java.util.HashMap;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.ListAdapter;
import android.widget.SimpleAdapter;


public class FindPeopleFragment extends Fragment  {

    public FindPeopleFragment(){}
      protected ListView lv;
      protected ListAdapter adapter;
      SimpleAdapter Adapter;
      HashMap<String, String> map;
      ArrayList<HashMap<String, String>> mylist;
      String[] Pil;
      String[] Ltn;
      String[] Gbr;


      public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        onCreate(savedInstanceState);
        setContentView(new View(R.layout.activity_pulau));

        ListView lv = (ListView) rootView.findViewById(R.id.lv);

        Pil = new String[] {"", "", "", "", ""};
        Ltn = new String[] {"", "", "", "", ""};
        Gbr = new String[] {Integer.toString(R.drawable.coba),
                                     };

        mylist = new ArrayList<HashMap<String,String>>();

        for (int i = 0; i < Pil.length; i++){
            map = new HashMap<String, String>();
            map.put("list", Pil[i]);
            map.put("latin", Ltn[i]);
            map.put("gbr", Gbr[i]);
            mylist.add(map);             
        }

        Adapter = new SimpleAdapter(this, mylist, R.layout.item_kepulauan,
                  new String[] {"list", "latin", "gbr"}, new int[] {R.id.tv_nama, R.id.tv_des, R.id.imV});
        lv.setAdapter(Adapter);
        return inflater.inflate(R.layout.activity_pulau, container, false);
    }

}

Answer 1

你应该充气 View在onCreateView(...)喜欢

 View rootView = inflater.inflate(R.layout.activity_pulau, container,
            false);

和return rootView;最后在onCreateView(...)

更正:

   public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.activity_pulau, container,false);

    ListView lv = (ListView) rootView.findViewById(R.id.lv);

    Pil = new String[] {"", "", "", "", ""};
    Ltn = new String[] {"", "", "", "", ""};
    Gbr = new String[] {Integer.toString(R.drawable.coba),
                                 };

    mylist = new ArrayList<HashMap<String,String>>();

    for (int i = 0; i < Pil.length; i++){
        map = new HashMap<String, String>();
        map.put("list", Pil[i]);
        map.put("latin", Ltn[i]);
        map.put("gbr", Gbr[i]);
        mylist.add(map);             
    }

    Adapter = new SimpleAdapter(getActivity(), mylist, R.layout.item_kepulauan,
              new String[] {"list", "latin", "gbr"}, new int[] {R.id.tv_nama, R.id.tv_des, R.id.imV});
    lv.setAdapter(Adapter);

    return rootView;
  }