android各种适配器的用法

ArrayAdapter_SimpleAdapter_CursorAdapter的区别

数据源不同而已
1. String[]: ArrayAdapter
2. List<Map<String,?>>: SimpleAdapter
3. 数据库Cursor: SimpleCursorAdapter

使用ArrayAdapter（数组适配器）顾名思义，需要把数据放入一个数组以便显示。
Android.R.layout.simple_list_item_1是系统定义好的布局文件只显示一行文字

SimpleAdapter能定义各种各样的布局出来，可以放上ImageView（图片），还可以放上Button（按钮），CheckBox（复选框）

//=============================SimpleAdapter==========================

public class List3 extends ListActivity {<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr> List&lt;Map&lt;String, Object&gt;&gt; list;<wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr> @Override<wbr><br><wbr><wbr><wbr> public void onCreate(Bundle savedInstanceState) {<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr> super.onCreate(savedInstanceState);<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr> list = getListForSimpleAdapter(); //list为数据集合<br><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr> SimpleAdapter<wbr><wbr><wbr><wbr> adapter = new SimpleAdapter(this, list,<wbr><wbr><br> R.layout.item,<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr> new String[] { "BigText", "LittleText", "img" },<wbr><wbr><wbr><br> new int[] { R.id.BigText,R.id.LittleText, R.id.img });<wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><wbr> //可以想成把一个放好数据的布局文件放入本界面中<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr> setListAdapter(adapter);<wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr> }<wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr> private List&lt;Map&lt;String, Object&gt;&gt; getListForSimpleAdapter() {<wbr><wbr><br><wbr><wbr><wbr> List&lt;Map&lt;String,Object&gt;&gt; list=newArrayList&lt;Map&lt;String,<wbr><wbr><wbr><wbr><wbr><wbr><wbr> Object&gt;&gt;(3);<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> Map&lt;String, Object&gt; map = new HashMap&lt;String, Object&gt;();<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("BigText", "Android");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("LittleText", "Google phone.");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("img", R.drawable.n);<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> list.add(map);<wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map = new HashMap&lt;String, Object&gt;();<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("BigText", "Lenovo");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("LittleText", "Ophone");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("img", R.drawable.o);<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> list.add(map);<wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map = new HashMap&lt;String, Object&gt;();<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("BigText", "Droid");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("LittleText", "Motorola");<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> map.put("img", R.drawable.droid);<wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> list.add(map);<wbr><wbr><br><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>