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。