SimpleAdapter是一个简单的适配器,可以将静态数据映射到XML文件中定义好的视图。
构造函数
public SimpleAdapter (Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to)
参数
context SimpleAdapter关联的View的运行环境
data 一个Map组成的List。在列表中的每个条目对应列表中的一行,每一个map中应该包含所有在from参数中指定的键
resource 一个定义列表项的布局文件的资源ID。布局文件将至少应包含那些在to中定义了的ID
from 一个将被添加到Map映射上的键名
to 将绑定数据的视图的ID,跟from参数对应,这些应该全是TextView
package com.app.test01; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.widget.ListView; import android.widget.SimpleAdapter; public class ListViewSimple extends Activity{ ListView listView1; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_weixin); listView1 = (ListView) findViewById(R.id.listView1); String[] strings = {"img","title","info","time"};//Map的key集合数组 int[] ids = {R.id.img,R.id.title,R.id.info,R.id.time};//对应布局文件的id SimpleAdapter simpleAdapter = new SimpleAdapter(this, getData(), R.layout.activity_weixin_item, strings, ids); listView1.setAdapter(simpleAdapter);//绑定适配器 } // 初始化一个List private List<HashMap<String, Object>> getData() { // 新建一个集合类,用于存放多条数据 ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>(); HashMap<String, Object> map = null; for (int i = 1; i <= 40; i++) { map = new HashMap<String, Object>(); map.put("title", "人物" + i); map.put("time", "9月20日"); map.put("info", "我通过了你的好友验证请求,现在我们可以开始对话啦"); map.put("img", R.drawable.special_spring_head2); list.add(map); } return list; } }
<?xml version="1.0" encoding="utf-8"?> <!-- 这是范例ListView的布局文件,出了ListView,还可以放置其他控件 --> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="fill_parent" android:background="#fff" android:orientation="vertical" > <RelativeLayout android:id="@+id/relativeLayout1" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="#2B3439" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:text="微信" android:textColor="#fff" android:textSize="22sp" /> </RelativeLayout> <ListView android:id="@+id/listView1" android:layout_width="match_parent" android:paddingTop="60dp" android:paddingBottom="50dp" android:cacheColorHint="#00000000" android:layout_height="match_parent" android:stackFromBottom="true" android:transcriptMode="alwaysScroll" > </ListView> </RelativeLayout>
<?xml version="1.0" encoding="utf-8"?> <!-- 这是列表项的布局文件,每一行长什么样子,修改这里 --> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="60dp" android:layout_gravity="center_vertical" android:orientation="horizontal" android:padding="5dp" > <ImageView android:id="@+id/img" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_centerVertical="true" android:padding="5dp" android:src="@drawable/gong1" /> <RelativeLayout android:id="@+id/relativeLayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_centerVertical="true" android:layout_marginLeft="5dp" android:layout_marginRight="70dp" android:layout_toRightOf="@+id/img" > <TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:text="TextView" android:textColor="#000" android:textSize="18sp"/> <TextView android:id="@+id/info" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:text="TextView" android:singleLine="true" android:ellipsize="end" android:textColor="#ccc" android:textSize="15sp" /> </RelativeLayout> <TextView android:id="@+id/time" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignTop="@+id/relativeLayout1" android:layout_alignParentRight="true" android:layout_marginRight="10dp" android:text="TextView" android:textColor="#ccc" android:textSize="15sp"/> </RelativeLayout>
package com.app.test01; import java.util.ArrayList; import java.util.HashMap; import java.util.Map; import android.app.Activity; import android.os.Bundle; import android.widget.GridView; import android.widget.SimpleAdapter; public class GridViewSimple extends Activity { private GridView gridView1; private int[] ids = { R.drawable.gong1, R.drawable.gong2, R.drawable.gong3, R.drawable.gong4, R.drawable.gong5, R.drawable.gong6, R.drawable.gong7, R.drawable.gong8, R.drawable.gong9, R.drawable.gong1, R.drawable.gong2, R.drawable.gong3, R.drawable.gong4, R.drawable.gong5, R.drawable.gong6, R.drawable.gong7, R.drawable.gong8, R.drawable.gong9 }; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.gridview); gridView1 = (GridView) findViewById(R.id.gridView1); ArrayList<Map<String, Object>> arrayList = new ArrayList<Map<String, Object>>(); for (int i = 0; i < ids.length; i++) { Map<String, Object> map = new HashMap<String, Object>(); map.put("image", ids[i]); arrayList.add(map); } SimpleAdapter simpleAdapter = new SimpleAdapter(this, arrayList, R.layout.gridview_item, new java.lang.String[] { "image" }, new int[] { R.id.imageView1 }); gridView1.setAdapter(simpleAdapter); } }
<?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="vertical" > <GridView android:id="@+id/gridView1" android:layout_width="match_parent" android:layout_height="wrap_content" android:numColumns="3" > </GridView> </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="vertical" android:gravity="center" android:paddingTop="10dp" android:paddingBottom="10dp"> <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/gong1" /> <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TextView" /> </LinearLayout>