Android apps应用检查更新代码

JAVA代码：
UpdateManager.java

[java]
<pre name="code" class="java">package com.iteye.update;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.iteye.androidtoast.R;

public class UpdateManager
{
    /* 下载中 */
    private static final int DOWNLOAD = 1;
    /* 下载结束 */
    private static final int DOWNLOAD_FINISH = 2;
    /* 保存解析的XML信息 */
    HashMap<String, String> mHashMap;
    /* 下载保存路径 */
    private String mSavePath;
    /* 记录进度条数量 */
    private int progress;
    /* 是否取消更新 */
    private boolean cancelUpdate = false;

    private Context mContext;
    /* 更新进度条 */
    private ProgressBar mProgress;
    private Dialog mDownloadDialog;

    private Handler mHandler = new Handler()
    {
        public void handleMessage(Message msg)
        {
            switch (msg.what)
            {
            // 正在下载
            case DOWNLOAD:
                // 设置进度条位置
                mProgress.setProgress(progress);
                break;
            case DOWNLOAD_FINISH:
                // 安装文件
                installApk();
                break;
            default:
                break;
            }
        };
    };

    public UpdateManager(Context context)
    {
        this.mContext = context;
    }

    /**
     * 检测软件更新
     */
    public void checkUpdate()
    {
        if (isUpdate())
        {
            // 显示提示对话框
            showNoticeDialog();
        } else
        {
            Toast.makeText(mContext, R.string.soft_update_no, Toast.LENGTH_LONG).show();
        }
    }

    /**
     * 检查软件是否有更新版本
     *
     * @return
     */
    private boolean isUpdate()
    {
        // 获取当前软件版本
        int versionCode = getVersionCode(mContext);
        // 把version.xml放到网络上，然后获取文件信息
        //InputStream inStream = ParseXmlService.class.getClassLoader().getResourceAsStream("version.xml");
        // 解析XML文件。由于XML文件比较小，因此使用DOM方式进行解析
        ParseXmlService service = new ParseXmlService();
        try
        {
            String path = "http://192.168.1.146:8080/picweb/xml/version.xml";   //地址是服务器上version.xml链接地址
            URL url = new URL(path);
            HttpURLConnection conn = (HttpURLConnection)url.openConnection();
            conn.setReadTimeout(5*1000);
            conn.setRequestMethod("GET");
            InputStream inStream = conn.getInputStream();
            mHashMap = service.parseXml(inStream);
        } catch (Exception e)
        {
            e.printStackTrace();
        }
        if (null != mHashMap)
        {
            int serviceCode = Integer.valueOf(mHashMap.get("version"));
            // 版本判断
         &nb

补充：移动开发 , Android ,