开源中国的版本更新

//版本更新的工具类
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import org.xmlpull.v1.XmlPullParser;

import com.royalmud.app.application.RoyalMudApplication;
import com.royalmud.app.bean.Update;

import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.util.Xml;

/**
* 版本更新
*/
public class VersionUpdateUtils{

Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
String xml = (String) msg.obj;
//解析数据
jiexiApkData(xml);
}
};

private String apkUrl = "http://www.oschina.net/MobileAppVersion.xml";

private Update update;

private Context context;

/**
* 解析apk
*
* @param xml
*/
public void jiexiApkData(String xml) {
try {
XmlPullParser newPullParser = Xml.newPullParser();
ByteArrayInputStream bais = new ByteArrayInputStream(xml.getBytes());
newPullParser.setInput(bais, "utf-8");
int eventType = newPullParser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
String name = newPullParser.getName();
switch (eventType) {
case XmlPullParser.START_TAG:
if ("android".equals(name)) {
update = new Update();
} else if ("versionCode".equals(name)) {
update.setVersionCode(newPullParser.nextText());
} else if ("versionName".equals(name)) {
update.setVersionName(newPullParser.nextText());
} else if ("downloadUrl".equals(name)) {
update.setDownloadUrl(newPullParser.nextText());
} else if ("updateLog".equals(name)) {
update.setUpdateLog(newPullParser.nextText());
}
break;
}
eventType = newPullParser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
// 判断更新
panduanUpdate();
}

/**
* 请求apk信息
*/
public void reguestAPKData(Context context) {
this.context=context;
new Thread() {
@Override
public void run() {
try {
URL url = new URL(apkUrl);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.setConnectTimeout(5000);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream is = conn.getInputStream();
byte[] buffer = new byte[1024];
int len = -1;
while ((len = is.read(buffer)) != -1) {
baos.write(buffer, 0, len);
}
Message message = handler.obtainMessage();
message.obj = baos.toString();
handler.sendMessage(message);
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
}

/**
* 安装apk
*/

protected void installApk(File file) {

Intent intent = new Intent();
// 执行动作
intent.setAction(Intent.ACTION_VIEW);
// 执行的数据类型
intent.setDataAndType(Uri.fromFile(file),
"application/vnd.android.package-archive");

context.startActivity(intent);

}

protected void downLoadApk() {

final ProgressDialog pd; // 进度条对话框

pd = new ProgressDialog(context);

pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

pd.setMessage("正在下载更新");

pd.show();
// 进行下载操作
new Thread() {
@Override
public void run() {
try {
// 下载
File file = DownLoadManager.getFileFromServer(
update.getDownloadUrl(), pd);

sleep(3000);
// 安装
installApk(file);

pd.dismiss(); // 结束掉进度条对话框

} catch (Exception e) {
}
}
}.start();
}

/**
* 提醒更新的对话框
*/
private void initAlert() {
try {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setTitle("软件版本更新");
builder.setMessage(update.getUpdateLog());
builder.setPositiveButton("立即更新",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 点击立即下载更新包
downLoadApk();
}
});
builder.setNegativeButton("以后再说",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {

}
});

AlertDialog alertDialog = builder.create();
alertDialog.show();
} catch (Exception e) {
e.printStackTrace();
}
}

/**
* 获得本应用的版本信息
*/
private void panduanUpdate() {
try {
PackageManager packageManager = RoyalMudApplication.getContext()
.getPackageManager();
PackageInfo packInfo = packageManager.getPackageInfo(RoyalMudApplication
.getContext().getPackageName(), 0);
String versionName = packInfo.versionName;
if (!versionName.equals(update.getVersionName())) {
initAlert();
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
}
}
//然后在Mainactivity中实现方法就可以了

/**
* 版本更新
*/
public void updataVersion() {
vutils = new VersionUpdateUtils();
vutils.reguestAPKData(MainActivity.this);
}

-------------------还要一个工具类DownLoadManager --------------------

import android.app.ProgressDialog; import android.os.Environment;

import java.io.BufferedInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.URL;

/**

下载apk所用的类
@author ZX50J

管理版本更新 * */ public class DownLoadManager { public static File getFileFromServer(String path, ProgressDialog pd) throws Exception{

//如果相等的话表示当前的sdcard挂载在手机上并且是可用的
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){

URL url = new URL(path);

HttpURLConnection conn =  (HttpURLConnection) url.openConnection();

conn.setConnectTimeout(5000);
//获取到文件的大小

pd.setMax(conn.getContentLength());

InputStream is = conn.getInputStream();

File file = new File(Environment.getExternalStorageDirectory(), "updata.apk");

FileOutputStream fos = new FileOutputStream(file);

BufferedInputStream bis = new BufferedInputStream(is);

byte[] buffer = new byte[1024];

int len ;

int total=0;

while((len =bis.read(buffer))!=-1){

fos.write(buffer, 0, len);

total+= len;

//获取当前下载量

pd.setProgress(total);

}

fos.close();

bis.close();

is.close();

return file;

}

else{

return null;

}

} }

Bena包-----------update----------------------------------------- package com.test.Bean;
 /** 版本更新的bean包

Created by Administrator on 2016/7/1. */
public class Update { private String versionCode;

private String versionName;

private String downloadUrl;

private String updateLog;

public String getVersionCode() { return versionCode; }

public void setVersionCode(String versionCode) { this.versionCode = versionCode; }

public String getVersionName() { return versionName; }

public void setVersionName(String versionName) { this.versionName = versionName; }

public String getDownloadUrl() { return downloadUrl; }

public void setDownloadUrl(String downloadUrl) { this.downloadUrl = downloadUrl; }

public String getUpdateLog() { return updateLog; }

public void setUpdateLog(String updateLog) { this.updateLog = updateLog; } }