android 版本更新

android 版本更新

这一android版本更新代码，简单易用，只有几个小点需要注意，更换成自己的相关信息就可以了。

入口类

   package com.version.roy;import java.io.IOException;import android.annotation.SuppressLint;import android.app.Activity;import android.os.Bundle;import android.os.StrictMode;import com.version.roy.manager.UpdateManager;/** * 更新视图界面类 * * @author Royal * */public class MainActivity extends Activity {/** Called when the activity is first created. */@SuppressLint("NewApi")@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);[color=red]if (android.os.Build.VERSION.SDK_INT > 9) {    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();    StrictMode.setThreadPolicy(policy);}[/color] // [color=green]这段代码必须添加[/color] // 版本更新检查UpdateManager um = new UpdateManager(MainActivity.this);try {um.checkUpdate(this.getString(R.string.version_url)); //[color=red]这里只需在string.xml文件 指定对应 相应的软件版本信息就可以[/color]} catch (IOException e) {e.printStackTrace();}}}     1 版本信息类       package com.version.roy.model;/** * 软件版本信息对象 * * @author Royal * */public class VersionInfo {// 版本描述字符串private String version;// 版本更新时间private String updateTime;// 新版本更新下载地址private String downloadURL;// 更新描述信息private String displayMessage;// 版本号private int versionCode;// apk名称private String apkName;public String getVersion() {return version;}public void setVersion(String version) {this.version = version;}public String getUpdateTime() {return updateTime;}public void setUpdateTime(String updateTime) {this.updateTime = updateTime;}public String getDownloadURL() {return downloadURL;}public void setDownloadURL(String downloadURL) {this.downloadURL = downloadURL;}public String getDisplayMessage() {return displayMessage;}public void setDisplayMessage(String displayMessage) {this.displayMessage = displayMessage;}public int getVersionCode() {return versionCode;}public void setVersionCode(int versionCode) {this.versionCode = versionCode;}public String getApkName() {return apkName;}public void setApkName(String apkName) {this.apkName = apkName;}}   



 2 解析版本信息类
 package com.version.roy.util;import java.io.IOException;import java.io.InputStream;import org.xmlpull.v1.XmlPullParser;import org.xmlpull.v1.XmlPullParserException;import org.xmlpull.v1.XmlPullParserFactory;import com.version.roy.model.VersionInfo;/** * XML文档解析工具类 * * @author Royal * */public class XMLParserUtil {/** * 获取版本更新信息 * * @param is *            读取连接服务version.xml文档的输入流 * @return */public static VersionInfo getUpdateInfo(InputStream is) {VersionInfo info = new VersionInfo();try {XmlPullParserFactory factory = XmlPullParserFactory.newInstance();factory.setNamespaceAware(true);XmlPullParser parser = factory.newPullParser();parser.setInput(is, "UTF-8");int eventType = parser.getEventType();while (eventType != XmlPullParser.END_DOCUMENT) {switch (eventType) {case XmlPullParser.START_TAG:if ("version".equals(parser.getName())) {info.setVersion(parser.nextText());} else if ("updateTime".equals(parser.getName())) {info.setUpdateTime(parser.nextText());} else if ("updateTime".equals(parser.getName())) {info.setUpdateTime(parser.nextText());} else if ("downloadURL".equals(parser.getName())) {info.setDownloadURL(parser.nextText());} else if ("displayMessage".equals(parser.getName())) {info.setDisplayMessage(parseTxtFormat(parser.nextText(), "##"));} else if ("apkName".equals(parser.getName())) {info.setApkName(parser.nextText());} else if ("versionCode".equals(parser.getName())) {info.setVersionCode(Integer.parseInt(parser.nextText()));}break;case XmlPullParser.END_TAG:break;}eventType = parser.next();}} catch (XmlPullParserException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return info;}/** * 根据指定字符格式化字符串（换行） * * @param data *            需要格式化的字符串 * @param formatChar *            指定格式化字符 * @return */public static String parseTxtFormat(String data, String formatChar) {StringBuffer backData = new StringBuffer();String[] txts = data.split(formatChar);for (int i = 0; i < txts.length; i++) {backData.append(txts[i]);backData.append("\n");}return backData.toString();}}


 3 更新管理类
    package com.version.roy.manager;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 android.app.AlertDialog.Builder;import android.content.Context;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.content.Intent;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.content.pm.PackageManager.NameNotFoundException;import android.net.Uri;import android.os.Handler;import android.os.Message;import android.view.LayoutInflater;import android.view.View;import android.widget.ProgressBar;import com.version.roy.R;import com.version.roy.model.VersionInfo;import com.version.roy.util.XMLParserUtil;/** * APK更新管理类 * * @author Royal * */public class UpdateManager {// 上下文对象private Context mContext;//更新版本信息对象private VersionInfo info = null;// 下载进度条private ProgressBar progressBar;// 是否终止下载private boolean isInterceptDownload = false;//进度条显示数值private int progress = 0;private static final String savePath = "/sdcard/updateApk/";private static final String saveFileName = savePath + "3GDHW_AppUpdate.apk";//下载地址private String downloadURL = null;/** * 参数为Context(上下文activity)的构造函数 * * @param context */public UpdateManager(Context context) {this.mContext = context;}public void checkUpdate(String version_url) throws IOException {// 从服务端获取版本信息info = getVersionInfoFromServer(version_url);if (info != null) {downloadURL = info.getDownloadURL();try {// 获取当前软件包信息PackageInfo pi = mContext.getPackageManager().getPackageInfo(mContext.getPackageName(), PackageManager.GET_CONFIGURATIONS);// 当前软件版本号int versionCode = pi.versionCode;if (versionCode != info.getVersionCode()) {// 如果当前版本号不等于服务端版本号,则弹出提示更新对话框showUpdateDialog();}} catch (NameNotFoundException e) {e.printStackTrace();}}else{showErrorDialog();}}/** * 从服务端获取版本信息 * * @return * @throws IOException */private VersionInfo getVersionInfoFromServer(String version_url) throws IOException {VersionInfo info = null;URL url = null;HttpURLConnection urlConnection = null;InputStream inputStream = null;try {url = new URL(version_url);} catch (MalformedURLException e) {e.printStackTrace();}if (url != null) {try {// 使用HttpURLConnection打开连接 urlConnection = (HttpURLConnection) url.openConnection(); urlConnection.connect(); inputStream = urlConnection.getInputStream(); if(inputStream == null){ // 服务器 和 本地 版本信息文件不一致 return null; }// 读取服务端version.xml的内容(流)info = XMLParserUtil.getUpdateInfo(inputStream);urlConnection.disconnect();inputStream.close();} catch (IOException e) {urlConnection.disconnect();if(inputStream != null)inputStream.close();return null;}}return info;}public void showErrorDialog(){Builder builder = new Builder(mContext);builder.setTitle("提示");builder.setMessage("网络或软件版本信息有错误，数据无法下载,请到网页下载最新版本软件");builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.show();}/** * 提示更新对话框 * * @param info *            版本信息对象 */private void showUpdateDialog() {Builder builder = new Builder(mContext);builder.setTitle("版本更新");builder.setMessage(info.getDisplayMessage());builder.setPositiveButton("下载", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();// 弹出下载框showDownloadDialog();}});builder.setNegativeButton("以后再说", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.create().show();}/** * 弹出下载框 */private void showDownloadDialog() {Builder builder = new Builder(mContext);builder.setTitle("版本更新中...");final LayoutInflater inflater = LayoutInflater.from(mContext);View v = inflater.inflate(R.layout.update_progress, null);progressBar = (ProgressBar) v.findViewById(R.id.pb_update_progress);builder.setView(v);builder.setNegativeButton("取消", new OnClickListener() {public void onClick(DialogInterface dialog, int which) {dialog.dismiss();//终止下载isInterceptDownload = true;}});builder.create().show();//下载apkdownloadApk();}/** * 下载apk */private void downloadApk(){//开启另一线程下载Thread downLoadThread = new Thread(downApkRunnable);downLoadThread.start();}/** * 从服务器下载新版apk的线程 */private Runnable downApkRunnable = new Runnable(){@Overridepublic void run() {String path = android.os.Environment.getExternalStorageState();System.out.println(path);if (!android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED)) {//如果没有SD卡Builder builder = new Builder(mContext);builder.setTitle("提示");builder.setMessage("当前设备无SD卡，数据无法下载");builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.show();return;}else if(downloadURL != null){try {//服务器上新版apk地址URL url = new URL(downloadURL);HttpURLConnection conn = (HttpURLConnection)url.openConnection();conn.connect();int length = conn.getContentLength();InputStream is = conn.getInputStream();File file = new File(savePath);if (!file.exists()) {file.mkdirs();}String apkFile = saveFileName;File ApkFile = new File(apkFile);FileOutputStream fos = new FileOutputStream(ApkFile);int count = 0;byte buf[] = new byte[1024];do{int numRead = is.read(buf);count += numRead;//更新进度条progress = (int) (((float) count / length) * 100);handler.sendEmptyMessage(1);if(numRead <= 0){//下载完成通知安装handler.sendEmptyMessage(0);isInterceptDownload = true;break;}fos.write(buf,0,numRead);//当点击取消时，则停止下载}while(!isInterceptDownload);fos.close();is.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}else{Builder builder = new Builder(mContext);builder.setTitle("提示");builder.setMessage("获取服务器版本信息错误，数据无法下载");builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {dialog.dismiss();}});builder.show();}}};/** * 声明一个handler来跟进进度条 */private Handler handler = new Handler() {public void handleMessage(Message msg) {switch (msg.what) {case 1:// 更新进度情况progressBar.setProgress(progress);break;case 0:progressBar.setVisibility(View.INVISIBLE);// 安装apk文件installApk();break;default:break;}};};/** * 安装apk */private void installApk() {File apkfile = new File(saveFileName);if (!apkfile.exists()) {return;}Intent i = new Intent(Intent.ACTION_VIEW);i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);i.setDataAndType(Uri.parse("file://" + apkfile.toString()),"application/vnd.android.package-archive");mContext.startActivity(i);//callback.OnBackResult("finish");}}

软件版本信息 version.xml

    <?xml version="1.0" encoding="UTF-8"?><update><version>2.0_20120530</version><versionCode>2</versionCode><updateTime>2015-05-30</updateTime><apkName>dhw_android_new.apk</apkName><downloadURL>http://192.168.0.75:8081/mobile-web/dhw_android_new.apk</downloadURL><displayMessage>新版本发布,赶紧下载吧 ## 1.新增A功能 ## 2.新增B功能## 3.新增C功能 ## 4.没有新增</displayMessage></update>

需要注意的地方很简单
1 注意权限。在模拟器可以下载，在手机上不行，就是因为权限。
2 整个流程是。打开软件，软件去服务器地址获取version.xml文件信息 ,与本地软件版本号比较，如果相同则不提示，不同则提示更新。用户允许更新，则从version.xml文件获取的新版本软件下载地址去服务器端下载。下载完成提示用户安装。

完整代码下载http://download.csdn.net/detail/annan211/8699949

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