Android 软件自动更新 （网络XML解析、以及本地xml软件版本两种解析方式）

XML放入网络空间---version.xml .url地址应该为正常***/*****.apk
<update>
<version>5</version>
<name>yuanbao</name>

<url>http://cdn.market.hiapk.com/data/upload//2012/06_27/13/yuanbao.co.

cc_134532.apk
</url>
</update>
----------------主main
package gognzibai.co.cc;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity
{
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//按钮更新
Button updateBtn = (Button) findViewById

(R.id.btnUpdate);
updateBtn.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
UpdateManager manager = new

UpdateManager(MainActivity.this);

manager.checkUpdate();
}
});

}
}

-----------------ParseXmlService.java
package gongzibai.co.cc;

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;

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

String>();

DocumentBuilderFactory factory = DocumentBuilderFactory
.newInstance();

DocumentBuilder builder = factory
.newDocumentBuilder();

Document document = builder
.parse(inStream);

Element root = document
.getDocumentElement();

NodeList childNodes = root
.getChildNodes();
for (int j = 0; j < childNodes
.getLength(); j++) {

Node childNode = (Node) childNodes
.item(j);
if (childNode.getNodeType() ==

Node.ELEMENT_NODE) {
Element childElement = (Element)

childNode;

if ("version"
.equals(childElement

.getNodeName())) {
hashMap.put(
"version",
childElement

.getFirstChild()

.getNodeValue());
}

else if (("name"
.equals(childElement

.getNodeName()))) {
hashMap.put(
"name",
childElement

.getFirstChild()

.getNodeValue());
}

else if (("url"
.equals(childElement

.getNodeName()))) {
hashMap.put(
"url",
childElement

.getFirstChild()

.getNodeValue());
}
}
}
return hashMap;
}
}

-------------更新管理.UpdateManager.java

package gongzibai.co.cc;

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.Dialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
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.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;

public class UpdateManager {

private static final int DOWNLOAD = 1;

private static final int DOWNLOAD_FINISH = 2;

HashMap<String, String> mHashMap;

private String mSavePath;

private int progress;

private boolean cancelUpdate = false;

private Context mContext;

private ProgressBar mProgress;
private Dialog mDownloadDialog;

private Handler mHandler = new Handler() {
public void handleMessage(
Message msg) {
switch (msg.what) {

case DOWNLOAD:

mProgress
.setProgress(progress);
break;
case DOWNLOAD_FINISH:
//安装APK
installApk();
break;
default:
break;
}
};
};

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

//检查更新
public void checkUpdate() {
if (isUpdate()) {

showNoticeDialog();
} else {
Toast.makeText(
mContext,
R.string.soft_update_no,
Toast.LENGTH_LONG)
.show();
}
}

private boolean isUpdate() {

int versionCode = getVersionCode(mContext);

//本地的XML更新
// InputStream inStream = ParseXmlService.class
//
// .getResourceAsStream("version.xml");
// InputStream inStream = ParseXmlService.class
// .getClassLoader()
// .getResourceAsStream(
// "version1.xml");

//解析网络xml进行更新软件
URL url = null;
try {
url = new URL(

"http://gongzibai.h001.sjsdidc.cn/version.xml");
} catch (MalformedURLException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
HttpURLConnection conn = null;
try {
conn = (HttpURLConnection) url
.openConnection();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
conn.setConnectTimeout(5000);
InputStream is = null;
try {
is = conn.getInputStream();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

ParseXmlService service = new ParseXmlService();
try {
mHashMap = service
.parseXml(is);
} catch (Exception e) {
e.printStackTrace();
}
if (null != mHashMap) {
int serviceCode = Integer
.valueOf(mHashMap
.get

("version"));

if (serviceCode > versionCode) {
return true;
}
}
return false;
}

private int getVersionCode(
Context context) {
int versionCode = 0;
try {

versionCode = context
.getPackageManager()
.getPackageInfo(

"gongzibai.co.cc",
0).versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
return versionCode;
}

private void showNoticeDialog() {

AlertDialog.Builder builder = new Builder(
mContext);
builder.setTitle(R.string.soft_update_title);
builder.setMessage(R.string.soft_update_info);

builder.setPositiveButton(
R.string.soft_update_updatebtn,
new OnClickListener() {
@Override
public void onClick(
DialogInterface

dialog,
int which) {
dialog.dismiss();

showDownloadDialog();
}
});

builder.setNegativeButton(
R.string.soft_update_later,
new OnClickListener() {
@Override
public void onClick(
DialogInterface

dialog,
int which) {
dialog.dismiss();
}
});
Dialog noticeDialog = builder
.create();
noticeDialog.show();
}

private void showDownloadDialog() {

AlertDialog.Builder builder = new Builder(
mContext);
builder.setTitle(R.string.soft_updating);

final LayoutInflater inflater = LayoutInflater
.from(mContext);
View v = inflater
.inflate(

R.layout.softupdate_progress,
null);
mProgress = (ProgressBar) v
.findViewById(R.id.update_progress);
builder.setView(v);

builder.setNegativeButton(
R.string.soft_update_cancel,
new OnClickListener() {
@Override
public void onClick(
DialogInterface

dialog,
int which) {
dialog.dismiss();

cancelUpdate = true;
}
});
mDownloadDialog = builder
.create();
mDownloadDialog.show();

downloadApk();
}

private void downloadApk() {

new downloadApkThread().start();
}

private class downloadApkThread
extends Thread {
@Override
public void run() {
try {

if (Environment

.getExternalStorageState()
.equals

(Environment.MEDIA_MOUNTED)) {

String sdpath = Environment

.getExternalStorageDirectory()
+ "/";
mSavePath = sdpath
+ "download";
URL url = new URL(
mHashMap.get

("url"));

HttpURLConnection conn =

(HttpURLConnection) url

.openConnection();
conn.connect();

int length = conn

.getContentLength();

InputStream is = conn

.getInputStream();

File file = new File(
mSavePath);

if (!file.exists()) {
file.mkdir();
}
File apkFile = new File(
mSavePath,
mHashMap.get

("name"));
FileOutputStream fos = new

FileOutputStream(
apkFile);
int count = 0;

byte buf[] = new byte[1024];

do {
int numread = is
.read

(buf);
count += numread;

progress = (int)

(((float) count / length) * 100);

mHandler.sendEmptyMessage(DOWNLOAD);
if (numread <= 0) {

mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
break;
}

fos.write(buf,
0,

numread);
} while (!cancelUpdate);
fos.close();
is.close();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}

mDownloadDialog.dismiss();
}
};

private void installApk() {
File apkfile = new File(
mSavePath,
mHashMap.get("name"));
if (!apkfile.exists()) {
return;
}

Intent i = new Intent(
Intent.ACTION_VIEW);
i.setDataAndType(
Uri.parse("file://"
+ apkfile

.toString()),
"application/vnd.android.package-

archive");
mContext.startActivity(i);
}
}

------------------自动更新弹出

package gongzibai.co.cc;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;

public class MainActivity extends
Activity {
@Override
public void onCreate(
Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

new Handler().postDelayed(
new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub
UpdateManager manager = new UpdateManager(
MainActivity.this);

manager.checkUpdate();

}
}, 5000);

}

}