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Android -- ListView与ArrayAdapter、SimpleAdapter

2024-07-08 22:33:13   225人阅读

对于ArrayAdapter，里面虽然能添加图片，但只能是相同的图片。

废话不多说：

布局&&list的item布局                                                                 

<LinearLayout 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/lv"        android:layout_width="match_parent"        android:layout_height="wrap_content"         /></LinearLayout>
<?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="horizontal" >    <ImageView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/ic_launcher" />    <TextView        android:id="@+id/tv"        android:layout_width="match_parent"        android:layout_height="wrap_content" /></LinearLayout>

程序                                                                                             

private static String[] names= {"功能1","功能2","功能3","功能4","功能5"};    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);                ListView lv = (ListView) findViewById(R.id.lv);        lv.setAdapter(new ArrayAdapter<String>(this, R.layout.list_item,R.id.tv, names));    }

--------------------------简单的分割线--------------0-0-----------------------------------------------------------

SimpleAdapter可以添加图片的哈~~每一个item都可以加自己想要的图片。

在item布局里面给imageView添加id为iv。

程序                                                                                             

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ListView lv = (ListView) findViewById(R.id.lv);        List<Map<String,Object>> data = http://www.mamicode.com/new ArrayList<Map<String,Object>>();        Map<String,Object> map1 = new HashMap<String, Object>();        map1.put("nameText", "第1个啦啦啦");        map1.put("icon", R.drawable.ic_launcher);        Map<String,Object> map2 = new HashMap<String, Object>();        map2.put("nameText", "第2个啦啦啦");        map2.put("icon", R.drawable.info_buse);        Map<String,Object> map3 = new HashMap<String, Object>();        map3.put("nameText", "第3个啦啦啦");        map3.put("icon", R.drawable.info_duijiao);        Map<String,Object> map4 = new HashMap<String, Object>();        map4.put("nameText", "第4个啦啦啦");        map4.put("icon", R.drawable.info_flash);        data.add(map1);        data.add(map2);        data.add(map3);        data.add(map4);                lv.setAdapter(new SimpleAdapter(this, data, R.layout.list_item, new String[]{"nameText", "icon"},new int[]{R.id.tv,R.id.iv}));    }

效果：

image

data为绑定的数据，list集合。R.layout.list_item，数据显示对应的布局，这是要让数据跟view对象奖励一个映射关系。from[] ，map集合里面的数据的key。to[]，布局文件里面的id。

我是天王盖地虎的分割线                                                                 

源代码：http://pan.baidu.com/s/1dD1Qx01

listview学习2.zip

 

 

 

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