android软件版本更新

1，按流程先贴主程序

package com.html;

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 com.Tools.HttpUtil;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.AlertDialog.Builder;

import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;

public class Update_MainActivity extends Activity {
    /* 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;

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

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.update_main);
        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                .detectDiskReads().detectDiskWrites().detectNetwork() // or
                                                                        // .detectAll()
                                                                        // for
                                                                        // all
                                                                        // detectable
                                                                        // problems
                .penaltyLog().build());
        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                .detectLeakedSqlLiteObjects().penaltyLog().penaltyDeath()
                .build());

        // 检查软件更新
        checkUpdate();
    }

    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;
            }
        };
    };

    /**
     * 检测软件更新
     */
    public void checkUpdate() {
        if (isUpdate()) {
            // 显示提示对话框
            showNoticeDialog();
        } else {
            Intent intent = new Intent(Update_MainActivity.this, Init.class);
            startActivity(intent);
            Update_MainActivity.this.finish();
        }
    }

    /**
     * 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();
        System.out.println("当前版本号" + versionCode);

        String sdpath = "http://192.168.0.13:8888/agent/updateApk/version.xml";
        InputStream inStream = HttpUtil
                .GetInputStreamFromURL("http://192.168.0.13:8888/agent/updateApk/version.xml");
        System.out.println("sdpath..............." + sdpath);
        System.out.println("inStream..............." + inStream);
        // 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 {
            mHashMap = service.parseXml(inStream);
        } catch (Exception e) {
            e.printStackTrace();
        }
        if (null != mHashMap) {
            int serviceCode = Integer.valueOf(mHashMap.get("version"));
            System.out.println("服务器版本号1" + serviceCode);
            // 版本判断
            if (serviceCode > versionCode) {
                return true;
            }
        }
        return false;
    }

    /**
     * 获取软件版本号
     * 
     * @return
     */
    private int getVersionCode() {
        int versionCode = 0;
        try {
            // 获取软件版本号，对应AndroidManifest.xml下android:versionCode
            versionCode = Update_MainActivity.this.getPackageManager()
                    .getPackageInfo("com.html", 0).versionCode;
        } catch (NameNotFoundException e) {
            e.printStackTrace();
        }
        return versionCode;
    }

    /**
     * 显示软件更新对话框
     */
    private void showNoticeDialog() {
        // 构造对话框
        System.out.println("显示软件更新对话框");
        AlertDialog.Builder builder = new Builder(this);
        builder.setTitle(R.string.soft_update_title);
        builder.setMessage(R.string.soft_update_info);
        // 更新
        builder.setPositiveButton(R.string.soft_update_updatebtn,
                new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        // 显示下载对话框
                        showDownloadDialog();
                    }
                });
        // 稍后更新
        builder.setNegativeButton(R.string.soft_update_later,
                new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        Intent intent = new Intent(Update_MainActivity.this,
                                Init.class);
                        startActivity(intent);
                        Update_MainActivity.this.finish();
                    }
                });
        Dialog noticeDialog = builder.create();
        noticeDialog.show();
    }

    /**
     * 显示软件下载对话框
     */
    private void showDownloadDialog() {
        // 构造软件下载对话框
        System.out.println("构造软件下载对话框");
        AlertDialog.Builder builder = new Builder(this);
        builder.setTitle(R.string.soft_updating);
        // 给下载对话框增加进度条
        final LayoutInflater inflater = LayoutInflater.from(this);
        View v = inflater.inflate(R.layout.softupdate_progress, null);
        mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
        builder.setView(v);
        // 取消更新
        builder.setNegativeButton(R.string.soft_update_cancel,
                new OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        // 设置取消状态
                        cancelUpdate = true;
                    }
                });
        mDownloadDialog = builder.create();
        mDownloadDialog.show();
        // 现在文件
        downloadApk();
    }

    /**
     * 下载apk文件
     */
    private void downloadApk() {
        // 启动新线程下载软件
        new downloadApkThread().start();
    }

    /**
     * 下载文件线程
     */
    private class downloadApkThread extends Thread {
        @Override
        public void run() {
            try {
                // 判断SD卡是否存在，并且是否具有读写权限
                if (Environment.getExternalStorageState().equals(
                        Environment.MEDIA_MOUNTED)) {
                    // 获得存储卡的路径
                    String sdpath = Environment.getExternalStorageDirectory()
                            + "/";
                    mSavePath = sdpath + "download";
                    System.out.println("下载存储地址" + mSavePath);
                    URL url = new URL(mHashMap.get("url"));
                    System.out.println("下载地址" + new URL(mHashMap.get("url")));
                    // 创建连接
                    HttpURLConnection conn = (HttpURLConnection) url
                            .openConnection();
                    conn.connect();
                    // 获取文件大小
                    int length = conn.getContentLength();
                    // 创建输入流
                    InputStream is = conn.getInputStream();

                    File file = new File(mSavePath);
                    // 判断文件目录是否存在
                    if (!file.exists()) {
                        file.mkdir();
                    }
                    File apkFile = new File(mSavePath, mHashMap.get("name"));
                    FileOutputStream fos = new FileOutputStream(apkFile);
                    int count = 0;
                    // 缓存
                    byte buf[] = new byte[1024];
                    // 写入到文件中
                    do {
                        int numread = is.read(buf);
                        count += numread;
                        // 计算进度条位置
                        progress = (int) (((float) count / length) * 100);
                        // 更新进度
                        mHandler.sendEmptyMessage(DOWNLOAD);
                        if (numread <= 0) {
                            // 下载完成
                            mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
                            break;
                        }
                        // 写入文件
                        fos.write(buf, 0, numread);
                    } while (!cancelUpdate);// 点击取消就停止下载.
                    fos.close();
                    is.close();
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            // 取消下载对话框显示
            mDownloadDialog.dismiss();
            System.out.println("下载文件");
        }
    };

    /**
     * 安装APK文件
     */
    private void installApk() {
        File apkfile = new File(mSavePath, mHashMap.get("name"));
        if (!apkfile.exists()) {
            return;
        }
        // 通过Intent安装APK文件
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setDataAndType(Uri.parse("file://" + apkfile.toString()),
                "application/vnd.android.package-archive");
        this.startActivity(intent);
    }
}

2,贴主程序中用到的工具类

检测版本有没有更新，要获取到服务器上version.xml里面的版本号，和本地APK中AndroidMainfest.xml中的versionCode的值比较

package com.Tools;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;

import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

public class HttpUtil {
    // 通过url获得HttpGet对象
    public static HttpGet getHttpGet(String url) {
        // 实例化HttpGet
        HttpGet request = new HttpGet(url);
        return request;
    }

    // 通过URL获得HttpPost对象
    public static HttpPost getHttpPost(String url) {
        // 实例化HttpPost
        HttpPost request = new HttpPost(url);
        return request;
    }

    // 通过HttpGet获得HttpResponse对象
    public static HttpResponse getHttpResponse(HttpGet request)
            throws ClientProtocolException, IOException {
        // 实例化HttpResponse
        HttpResponse response = new DefaultHttpClient().execute(request);
        return response;
    }

    // 通过HttpPost获得HttpResponse对象
    public static HttpResponse getHttpResponse(HttpPost request)
            throws ClientProtocolException, IOException {
        // 实例化HttpResponse
        HttpResponse response = new DefaultHttpClient().execute(request);
        return response;
    }

    // 通过url发送post请求，返回请求结果
    public static String queryStringForPost(String url) {

        // 获得HttpPost实例
        HttpPost request = HttpUtil.getHttpPost(url);
        String result = null;
        try {
            // 获得HttpResponse实例
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            // if(response.getStatusLine().getStatusCode() ==200){
            // 获得返回结果
            result = EntityUtils.toString(response.getEntity());
            return result;
            // }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        }
        // return null;
    }

    // 通过url发送get请求，返回请求结果
    public static String queryStringForGet(String url) {
        // 获得HttpGet实例
        HttpGet request = HttpUtil.getHttpGet(url);
        String result = null;
        try {
            // 获得HttpResponse实例
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            // if(response.getStatusLine().getStatusCode()==200){
            // 获得返回结果
            result = EntityUtils.toString(response.getEntity());
            return result;
            // }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        }
        // return null;
    }

    // 通过HttpPost发送Post请求，返回请求结果
    public static String queryStringForPost(HttpPost request) {
        String result = null;
        try {
            // 获得HttpResponse实例
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            // if(response.getStatusLine().getStatusCode()==200){
            // 获得请求结果
            result = EntityUtils.toString(response.getEntity());
            return result;
            // }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        }
        // return null;
    }

    // 通过HttpGet发送Get请求，返回请求结果
    public static String queryStringForGet(HttpGet request) {
        String result = null;
        try {

            // 获得HttpResponse实例
            HttpResponse response = HttpUtil.getHttpResponse(request);
            // 判断是否请求成功
            // if(response.getStatusLine().getStatusCode()==200){
            // 获得请求结果
            result = EntityUtils.toString(response.getEntity());
            return result;
            // }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        } catch (IOException e) {
            e.printStackTrace();
            result = "网络异常!";
            return result;
        }
        // return null;
    }

    public static InputStream GetInputStreamFromURL(String urlstr) {
        HttpURLConnection connection;
        URL url;
        InputStream stream = null;
        try {
            url = new URL(urlstr);
            connection = (HttpURLConnection) url.openConnection();
            connection.connect();
            stream = connection.getInputStream();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        return stream;
    }
}

 

3通过上面的类获取到服务器上XML的输入流，然后再解析XML取到里面的内容

package com.html;


import java.io.InputStream;
import java.util.HashMap;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class ParseXmlService {
    public HashMap<String, String> parseXml(InputStream inStream)
            throws Exception {
        HashMap<String, String> hashMap = new HashMap<String, String>();

        // 实例化一个文档构建器工厂
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        // 通过文档构建器工厂获取一个文档构建器
        DocumentBuilder builder = factory.newDocumentBuilder();
        // 通过文档通过文档构建器构建一个文档实例
        Document document = builder.parse(inStream);
        // 获取XML文件根节点
        Element root = document.getDocumentElement();
        // 获得所有子节点
        NodeList childNodes = root.getChildNodes();
        for (int j = 0; j < childNodes.getLength(); j++) {
            // 遍历子节点
            Node childNode = (Node) childNodes.item(j);
            if (childNode.getNodeType() == Node.ELEMENT_NODE) {
                Element childElement = (Element) childNode;
                // 版本号
                if ("version".equals(childElement.getNodeName())) {
                    hashMap.put("version", childElement.getFirstChild()
                            .getNodeValue());
                    System.out.println("服务器版本号2" + childElement.getFirstChild()
                            .getNodeValue());
                }
                // 软件名称
                else if (("name".equals(childElement.getNodeName()))) {
                    hashMap.put("name", childElement.getFirstChild()
                            .getNodeValue());
                }
                // 下载地址
                else if (("url".equals(childElement.getNodeName()))) {
                    hashMap.put("url", childElement.getFirstChild()
                            .getNodeValue());
                }
            }
        }
        return hashMap;
    }
}

4，有了这些就可以比较版本是否有更新，

在网站上存放你的用来更新，的APK和version.xml了。

<update>
    <version>2</version>
    <name>NCP_Consume</name>
    <url>http://192.168.0.13:8888/agent/updateApk/NCP_Consume.apk</url>
</update>

5，别忘了加权限在AndroidMainfest.xml里面加上访问网络的权限。根据你android版本不一样加的位置也不一样，貌似2.2的是加载下面。3.0以上要加在上面。总之你的权限下面不能有黄色没有用到提示的波浪线。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.html"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="8" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
</manifest>

倒说第三个权限就是联网的，下面2个挂载和读写SD卡的

特别提示我再平板4.0系统上开发的时候权限加在上面下面都没用，虽然没有黄色提示线。后来找到解决的方法，android3.0以后访问网络的权限的解决办法。在oncreate()中加上这段代码：

StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
                .detectDiskReads().detectDiskWrites().detectNetwork() 
                .penaltyLog().build());
        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
                .detectLeakedSqlLiteObjects().penaltyLog().penaltyDeath()
                .build());

以上就是我做的android软件版本升级代码。后期老总要我做成想WINDOWS那样单独的一个Update升级软件，要每次启动软件默认后台运行，现在卡在后台运行一个APK上面了。等完成后再贴上来把！