Android第五期 - 更新自己的apk本地与网络两种方法

首先是本地：
ParseXmlService部分：

package com.szy.update;

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;

/**
*@author coolszy
*@date 2012-4-26
*@blog http://blog.92coding.com */
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());
}
//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;
}
}

UpdateManager部分：

package com.gaoxiaotongctone.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 com.gaoxiaotongctone.R;

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.content.res.Resources.NotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;

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() {
@Override
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
*
* @throws IOException
* @throws NotFoundException
*/
public void checkUpdate() throws NotFoundException, IOException {
new Thread(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub

try {
if (isUpdate()) {
// 显示提示对话框
Looper.prepare();
showNoticeDialog();
Looper.loop();
Log.d("消息", "有新版本");
} else {
// Toast.makeText(mContext, R.string.soft_update_no,
// Toast.LENGTH_LONG).show();

Log.d("消息", "已是最新版本");
}
} catch (NotFoundException e) {
// TODO Auto-generated catch block
//Toast.makeText(UpdateManager.this, "QQ空间", 2).show();
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}).start();
}

/**
* 检查软件是否有更新版本
*
* @return
* @throws IOException
*/
private boolean isUpdate() throws IOException {
// 获取当前软件版本
int versionCode = getVersionCode(mContext);
// 把version.xml放到src,然后获取文件信息

InputStream inStream =
ParseXmlService.class.getClassLoader().getResourceAsStream("version.xml");
InputStream inStream = urlConn.getInputStream();
// 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"));// String.valueOf("serviceCode"+"---"+serviceCode)
// Toast.makeText(UpdateManager.this,'', Toast.LENGTH_SHORT).show();
Log.i("-----serviceCode", "" + serviceCode);
Log.i("-----versionCode", "" + versionCode);

// 版本判断
if (serviceCode > versionCode) {
return true;
}
} else {
Log.i("-----null == mHashMap", "null == mHashMap");
}

return false;
}

/**
* 获取软件版本号
*
* @param context
* @return
*/
private int getVersionCode(Context context) {
int versionCode = 0;
try {
// 获取软件版本号，对应AndroidManifest.xml下android:versionCode
versionCode = context.getPackageManager().getPackageInfo(
"com.gaoxiaotongctone", 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
AlertDialog.Builder builder = new Builder(mContext);
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();
}
});
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
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle(R.string.soft_updating);
// 给下载对话框增加进度条
final LayoutInflater inflater = LayoutInflater.from(mContext);
View v = inflater.inflate(R.layout.sotfupdate_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";
URL url = 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();
}
};

/**
* 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 i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file://" + apkfile.toString()),
"application/vnd.android.package-archive");
mContext.startActivity(i);
}
}

MainActivity.java部分：

@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
UpdateManager manager = new UpdateManager(MainActivity.this);
manager.checkUpdate();

}

别忘了xml中给权限。




version.xml部分：

<update>
<version>2</version>
<name>彩通科技</name>
<url>http://imp.ctone.net/Frame/ctone.apk</url>
</update>

网络链接UpdateManager.java部分：

package com.gaoxiaotongctone.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 com.gaoxiaotongctone.R;

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.content.res.Resources.NotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;

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() {
@Override
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
*
* @throws IOException
* @throws NotFoundException
*/
public void checkUpdate() throws NotFoundException, IOException {
new Thread(new Runnable() {

@Override
public void run() {
// TODO Auto-generated method stub

try {
if (isUpdate()) {
// 显示提示对话框
Looper.prepare();
showNoticeDialog();
Looper.loop();
Log.d("消息", "有新版本");
} else {
// Toast.makeText(mContext, R.string.soft_update_no,
// Toast.LENGTH_LONG).show();

Log.d("消息", "已是最新版本");
}
} catch (NotFoundException e) {
// TODO Auto-generated catch block
//Toast.makeText(UpdateManager.this, "QQ空间", 2).show();
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}).start();
}

/**
* 检查软件是否有更新版本
*
* @return
* @throws IOException
*/
private boolean isUpdate() throws IOException {
// 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
URL url = new URL("http://imp.ctone.net/Frame/version.xml");
HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
InputStream inStream = urlConn.getInputStream();
// 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"));// String.valueOf("serviceCode"+"---"+serviceCode)
// Toast.makeText(UpdateManager.this,'', Toast.LENGTH_SHORT).show();
Log.i("-----serviceCode", "" + serviceCode);
Log.i("-----versionCode", "" + versionCode);

// 版本判断
if (serviceCode > versionCode) {
return true;
}
} else {
Log.i("-----null == mHashMap", "null == mHashMap");
}

return false;
}

/**
* 获取软件版本号
*
* @param context
* @return
*/
private int getVersionCode(Context context) {
int versionCode = 0;
try {
// 获取软件版本号，对应AndroidManifest.xml下android:versionCode
versionCode = context.getPackageManager().getPackageInfo(
"com.gaoxiaotongctone", 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
AlertDialog.Builder builder = new Builder(mContext);
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();
}
});
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
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle(R.string.soft_updating);
// 给下载对话框增加进度条
final LayoutInflater inflater = LayoutInflater.from(mContext);
View v = inflater.inflate(R.layout.sotfupdate_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";
URL url = 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();
}
};

/**
* 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 i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file://" + apkfile.toString()),
"application/vnd.android.package-archive");
mContext.startActivity(i);
}
}

附效果图：
















好好学习，好好活着。

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