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android使用SimpleAdapter和ListView实现列表功能

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android使用SimpleAdapter和ListView实现列表功能例子

解决方法:

1、activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="fill_parent"

   android:layout_height="fill_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"

    android:id="@+id/root"

   tools:context="com.example.ff.MainActivity" >

      <ListView

       android:id="@+id/listView"

       android:layout_width="match_parent"

       android:layout_height="wrap_content"

       android:layout_alignParentTop="true"

       android:layout_centerHorizontal="true">

   </ListView>

</RelativeLayout>

2、在layout目录下新建row.xml文件

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   android:layout_width="match_parent"

   android:layout_height="match_parent" >

   <TextView

       android:id="@+id/title"

       android:layout_width="wrap_content"

       android:layout_height="wrap_content"

android:text="标题"

       android:textSize="22sp" />

   <TextView

       android:id="@+id/desc"

       android:layout_width="wrap_content"

       android:layout_height="wrap_content"

       android:layout_below="@+id/title"

       android:text="详细信息" />

</RelativeLayout>

3、MainActivity.java

package com.example.ff;

import java.util.ArrayList;

import java.util.Calendar;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import android.app.Activity;

import android.app.AlertDialog;

import android.app.ListActivity;

import android.app.ProgressDialog;

import android.content.DialogInterface;

import android.graphics.Color;

import android.os.Bundle;

import android.view.ContextMenu;

import android.view.ContextMenu.ContextMenuInfo;

import android.view.Menu;

import android.view.MenuItem;

import android.view.SubMenu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.RelativeLayout;

import android.widget.SimpleAdapter;

import android.widget.TextView;

import android.widget.TimePicker;

import android.widget.Toast;

public class MainActivity extends Activity {

ListView listView;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

listView = (ListView) findViewById(R.id.listView);

// 指定适配器

SimpleAdapter adapter = new SimpleAdapter(this, getData(),

R.layout.row, new String[] { "title", "desc" },

new int[] { R.id.title, R.id.desc });

// 绑定

listView.setAdapter(adapter);

// 事件

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

@Override

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

ListView lv = (ListView) parent;

// 得到数据

Map<String, Object> item = (Map<String, Object>) lv

.getItemAtPosition(position);

Toast.makeText(MainActivity.this, "你选中了" + item.get("title"),

Toast.LENGTH_LONG).show();

}

});

}

// 数据源的方法

List<Map<String, Object>> getData() {

List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

Map<String, Object> row = new HashMap<String, Object>();

row.put("title", "照相机");

row.put("desc", "1000万像素");

row.put("img", R.drawable.camera);

list.add(row);

row = new HashMap<String, Object>();

row.put("title", "望远镜");

row.put("desc", "军方使用");

row.put("img", R.drawable.telescope);

list.add(row);

row = new HashMap<String, Object>();

row.put("title", "手电筒");

row.put("desc", "唯一的家用电器");

row.put("img", R.drawable.flashlight);

list.add(row);

return list;

}

}

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