Android课程---关于ListView列表视图的学习

activity_ui3.xml

<?xml version="1.0" encoding="utf-8"?>

<ListView xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:id="@+id/lv_1"

    android:divider="#0ff"

    android:dividerHeight="2dp">

</ListView>

UIActivity.java

package com.hanqi.test5;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.Toast;

import java.util.ArrayList;

import java.util.List;

public class UIActivity3 extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_ui3);

        ListView lv_1 = (ListView)findViewById(R.id.lv_1);

        //设置ListView的Adapter

        //准备数据

        //String[] str_1 = {"A","B","C","D","E","F","G","H","I","J","K","L","M"};

        List<String> list_1 = new ArrayList<String>();

        list_1.add("A");

        list_1.add("B");

        list_1.add("C");

        list_1.add("D");

        list_1.add("E");

        list_1.add("F");

        list_1.add("D");

        list_1.add("H");

        //构造适配器

        ArrayAdapter aa_1 = new ArrayAdapter(this,R.layout.layout_array,list_1);  //实例化

        //设置适配器

        lv_1.setAdapter(aa_1);

        lv_1.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

                String str = parent.getItemAtPosition(position).toString();

                Toast.makeText(UIActivity3.this, "position = "+position + "id = " + id, Toast.LENGTH_SHORT).show();

            }

        });

    }

}

效果图：