package com.yarin.android.Examples_04_04;

import android.app.Activity;

import android.database.Cursor;

import android.graphics.Color;

import android.os.Bundle;

import android.provider.ContactsContract;

import android.provider.ContactsContract.PhoneLookup;

import android.util.Log;

import android.view.View;

import android.widget.AdapterView;

import android.widget.LinearLayout;

import android.widget.ListAdapter;

import android.widget.ListView;

import android.widget.SimpleCursorAdapter;

import android.widget.Toast;

public class Activity01 extends Activity

{

    LinearLayout    m_LinearLayout;

    ListView        m_ListView;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        /* 创建LinearLayout布局对象 */

        m_LinearLayout = new LinearLayout(this);

        /* 设置布局LinearLayout的属性 */

        m_LinearLayout.setOrientation(LinearLayout.VERTICAL);

        m_LinearLayout.setBackgroundColor(android.graphics.Color.BLACK);

        /* 创建ListView对象 */

        m_ListView = new ListView(this);

        LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);

        m_ListView.setBackgroundColor(Color.BLACK);

        /* 添加m_ListView到m_LinearLayout布局 */

        m_LinearLayout.addView(m_ListView, param);

        /* 设置显示m_LinearLayout布局 */

        setContentView(m_LinearLayout);

        // 获取数据库Phones的Cursor

        Cursor cur = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,

                null, null, null);

        startManagingCursor(cur);

        // ListAdapter是ListView和后台数据的桥梁

        ListAdapter adapter = new SimpleCursorAdapter(this,

            // 定义List中每一行的显示模板

            // 表示每一行包含两个数据项

            android.R.layout.simple_list_item_2,

            // 数据库的Cursor对象

            cur,

            // 从数据库的NAME和NUMBER两列中取数据

            new String[] { /*PhoneLookup.DISPLAY_NAME*/ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME, /*PhoneLookup.NUMBER*//*ContactsContract.Contacts._ID*/ContactsContract.CommonDataKinds.Phone.NUMBER },

            // 与NAME和NUMBER对应的Views

            new int[] { android.R.id.text1, android.R.id.text2 });

        /* 将adapter添加到m_ListView中 */

        m_ListView.setAdapter(adapter);

        Log.v("显示内容", adapter.getItem(0).toString());

        /* 为m_ListView视图添加setOnItemSelectedListener监听 */

        m_ListView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override

            public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3)

            {

                DisplayToast("滚动到第"+Long.toString(arg0.getSelectedItemId())+"项");

            }

            @Override

            public void onNothingSelected(AdapterView<?> arg0)

            {

                //没有选中

            }

        });

        /* 为m_ListView视图添加setOnItemClickListener监听 */

        m_ListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)

            {

                //于对选中的项进行处理

                DisplayToast("选中了第"+Integer.toString(arg2+1)+"项");

            }

        });

    }

    /* 显示Toast  */

    public void DisplayToast(String str)

    {

        Toast.makeText(this, str, Toast.LENGTH_SHORT).show();

    }

}