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！
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