Fragment中使用listview的用法

在android项目中，经常用到关于listview的，经过很多博客博主的文章，我尝试很多测试都失败了，终于通过不断的总结调试终于有了可靠的解决方案，这里分享给小伙伴们；

先上效果图：

1、定义xml

xml 主要有两个；第一个位listview，还有一个为item；

1.1 fragment_my.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#dee9f7">


    <ListView
        android:id="@+id/my_list"
      
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

1.2 my_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="horizontal"
    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/myMenu_image"
        android:layout_margin="10dp"
        android:layout_width="80px"
        android:layout_height="80px" />

    <TextView
        android:id="@+id/myMenu_name"
        android:textSize="23dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical"
        />


</LinearLayout>

1.3 Fragment核心代码

package com.liu.znybq.fragment;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;


import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import androidx.fragment.app.Fragment;


import com.liu.znybq.R;
import com.liu.znybq.utils.L;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/*
 *  项目名：  android_znybq
 *  包名：     com.liu.znybq.fragment
 *  文件名:    FragmentHome
 *  创建者:    shi860715@126.com liubj
 *  创建时间:   2020/4/16  12:50
 *  描述：    TODO
 */
public class FragmentMy extends Fragment implements AdapterView.OnItemClickListener {
     ListView listView;
     SimpleAdapter simpleAdapter;

    /**
     *   布局文件和framagement 关联
     * @param inflater
     * @param container
     * @param savedInstanceState
     * @return
     */
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

       View view =inflater.inflate(R.layout.fragment_my,container,false);
        listView =view.findViewById(R.id.my_list);

        simpleAdapter = new SimpleAdapter(getActivity(),getData(),R.layout.my_menu,new String[]{"title","image"},new int[]{R.id.myMenu_name,R.id.myMenu_image});
       listView.setAdapter(simpleAdapter);

        listView.setOnItemClickListener(this);
        return view;
    }

    private List<Map<String,Object>> getData() {
        String [] titles={"水果1","水果2","水果3","水果4","水果5","水果6","水果7"};
        int [] images={R.drawable.shuiguo_0,R.drawable.shuiguo_1,R.drawable.shuiguo_2,
                R.drawable.shuiguo_3,R.drawable.shuiguo_4,
                R.drawable.shuiguo_5,R.drawable.shuiguo_6};
        List<Map<String,Object>> list= new ArrayList<>();
           for(int i=0;i<7;i++){
               Map  map = new HashMap();
               map.put("title",titles[i]);
               map.put("image",images[i]);
               list.add(map);
           }
        return list;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

    }



    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        L.i("position:"+position);
        String text = listView.getAdapter().getItem(position).toString();
        L.i("position:"+position+"text"+text );
    }
}

1.4 测试

通过点击事件可用得到，里面的json格式的输出

2020-04-16 12:43:31.393 7455-7455/com.liu.znybq I/ZNYBQ: position:6text{image=2131230868, title=水果7}