ListView的基本使用

布局文件

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

创建Item_Layout.xml 文件 、编辑为 ListView 显示的格式

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="20dp"
    >
    <ImageView
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:id="@+id/iv_img"
        android:background="@drawable/ic_baseline_settings_24"
        />
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="雨中漫步"
        android:id="@+id/tv_title"
        android:layout_toRightOf="@id/iv_img"
        android:textSize="30sp"
        />
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tv_body"
        android:text="人生就像旅行"
        android:layout_below="@id/tv_title"
        android:layout_toRightOf="@id/iv_img"
        android:padding="30dp"
        />


</RelativeLayout>

创建实体类（JavaBean）、存放数据要显示的数据

public class ItemBean {

    private String title;
    private String content;
    private int imgResId;

}

创建适配器继承BaseAdapter、实现4个方法

    //数据源
    private List<ItemBean> itemBeans;
    //布局数据源
    private LayoutInflater layoutInflater;
    //上下文
    private Context context;

    public MyAdapter(Context context , List<ItemBean> itemBean) {
        this.context = context;
        this.itemBeans = itemBean;
        layoutInflater = LayoutInflater.from(context);
    }

//为ListView显示内容
    @Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        //创建每一个条目
        view = layoutInflater.inflate( R.layout.list_item_layout , viewGroup , false);
        //找到条目里面控件Id
        ImageView imageView = view.findViewById(R.id.iv_img);
        TextView textViewTitle = view.findViewById(R.id.tv_title);
        TextView textViewBody = view.findViewById(R.id.tv_body);
        //拿到数据
        ItemBean itemBean = itemBeans.get(i);
        //为控件设置要显示的内容
        imageView.setImageResource(itemBean.getImgResId());
        textViewTitle.setText(itemBean.getTitle());
        textViewBody.setText(itemBean.getContent());
        //最后返回条目
        return view;
    }

最后Activity代码

    //声明控件
    private ListView listView;
    private List<ItemBean> itemBeans;
    private MyAdapter myAdapter;

初始化控件

    private void initView() {
        listView = findViewById(R.id.lv);
    }

准备数据（也可以请求网络中的然后Json解析）

        private void initData() {
        //创建数组
        itemBeans = new ArrayList<>();
        //准备数据
        ItemBean itemBean1 = new ItemBean();
        itemBean1.setTitle("我是i但撒谎嗲是丢啊是大i撒谎的奥萨蒂还大还大阿萨");
        itemBean1.setContent("ldksudoijclxjd4fef51er35f1");
        //数据添加到数组中
        itemBeans.add(itemBean1);
    }

实例化Adapter

    private void initAdapter() {
        myAdapter = new MyAdapter(this,itemBeans); 
        //为ListView绑定Adapter
        listView.setAdapter(myAdapter);
        //绑定点击事件
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                //获取条目内容、进行其他操作
                ItemBean itemBean = itemBeans.get(i);
            }
        });
    }