ListView列表项

Posted 2020-06-09

方法，在xml文件中添加一个ListView，然后在MainActivity中

private ListView listView;
private ArrayAdapter<String> arr_adapter;

listView = (ListView) findViewById(R.id.listView1);
String[] arr_data = {"明明","丽媛", "彭辉", "倩倩", "迪迪","李琰", "赛磊"};
/*
* 新建一个适配器
* ArrayAdapter(上下文，当前ListView加载的每一个列表项所对应的布局文件,数据源);
* 适配器加载数据源
*/
arr_adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arr_data);
//视图加载适配器
listView.setAdapter(arr_adapter);

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" >
    </ListView>

</RelativeLayout>

MainActivity

package com.thinker.arrayadapter;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {
    private ListView listView;
    private ArrayAdapter<String> arr_adapter;
    private SimpleAdapter simpleAdapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView) findViewById(R.id.listView1);
        String[] arr_data = {"明明","丽媛", "彭辉", "倩倩", "迪迪","李琰", "赛磊"};
        /*
         * 新建一个适配器
         * ArrayAdapter(上下文，当前ListView加载的每一个列表项所对应的布局文件,数据源);
         * 适配器加载数据源
         */
        arr_adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arr_data);
        //视图加载适配器
        listView.setAdapter(arr_adapter);
            
    }
}