Android UI ListView(1)

最简单的String List的实现

 

 

 

实现步骤：

1.在xml布局文件中添加ListView控件节点并且设置好相关属性

2.在activity里findViewById 找到ListView控件对象

3.创建ListView的适配器adapter (这里采用ArrayAdapter<String> adapter)

4.给ListView绑定adapter

5.通过adapter往ListView里添加item

 

<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="cn.jinyejun.ui_listview.MainActivity" >

    <ListView
        android:id="@+id/lv_main"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    </ListView>

</RelativeLayout>

package cn.jinyejun.ui_listview;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class MainActivity extends ActionBarActivity {
	
	private ListView lv;					//ListView组件
	private ArrayAdapter<String> adapter;	//ListView组件的适配器

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		//创建ListView的适配器adapter用来适配ListView里的布局风格和布局内容
		adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);
		//通过id索引到ListView的组件
		lv = (ListView) findViewById(R.id.lv_main);
		//给ListView添加适配器
		lv.setAdapter(adapter);
		
		//通过adapter往ListView里面添加内容
		adapter.add("item1");
		adapter.add("item2");
		adapter.add("item3");
		adapter.add("item4");
		adapter.add("item5");
		adapter.add("item6");
		
	}

}