Android程序自动更新功能模块的实现方法【附完整demo源码下载】

private UpdateManager updateMan;
private ProgressDialog updateProgressDialog;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  //没有判断网路是否连接
  //检查是否有更新
  //如果有更新提示下载
  updateMan = new UpdateManager(Update_TestActivity.this, appUpdateCb);
  updateMan.checkUpdate();
}

package update.test;
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 org.json.JSONArray;
import org.json.JSONObject;
import com.trinet.util.NetHelper;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
  public class UpdateManager {
  private String curVersion;
  private String newVersion;
  private int curVersionCode;
  private int newVersionCode;
  private String updateInfo;
  private UpdateCallback callback;
  private Context ctx;
  private int progress;
  private Boolean hasNewVersion;
  private Boolean canceled;
  //存放更新APK文件的路径
  public static final String UPDATE_DOWNURL = "http://www.baidu.com/update/update_test.apk";
  //存放更新APK文件相应的版本说明路径
  public static final String UPDATE_CHECKURL = "http://www.baidu.com/update/update_verson.txt";
  public static final String UPDATE_APKNAME = "update_test.apk";
  //public static final String UPDATE_VERJSON = "ver.txt";
  public static final String UPDATE_SAVENAME = "updateapk.apk";
  private static final int UPDATE_CHECKCOMPLETED = 1;
  private static final int UPDATE_DOWNLOADING = 2;
  private static final int UPDATE_DOWNLOAD_ERROR = 3;
  private static final int UPDATE_DOWNLOAD_COMPLETED = 4;
  private static final int UPDATE_DOWNLOAD_CANCELED = 5;
  //从服务器上下载apk存放文件夹
  private String savefolder = "/mnt/innerDisk/";
 //private String savefolder = "/sdcard/";
 //public static final String SAVE_FOLDER =Storage. // "/mnt/innerDisk";
 public UpdateManager(Context context, UpdateCallback updateCallback) {
  ctx = context;
  callback = updateCallback;
  //savefolder = context.getFilesDir();
  canceled = false;
  getCurVersion();
 }
 public String getNewVersionName()
 {
  return newVersion;
 }
 public String getUpdateInfo()
 {
  return updateInfo;
 }
 private void getCurVersion() {
  try {
   PackageInfo pInfo = ctx.getPackageManager().getPackageInfo(
     ctx.getPackageName(), 0);
   curVersion = pInfo.versionName;
   curVersionCode = pInfo.versionCode;
  } catch (NameNotFoundException e) {
   Log.e("update", e.getMessage());
   curVersion = "1.1.1000";
   curVersionCode = 111000;
  }
 }
 public void checkUpdate() {
  hasNewVersion = false;
  new Thread(){
   // ***************************************************************
   /**
    * @by wainiwann
    *
    */
   @Override
   public void run() {
    Log.i("@@@@@", ">>>>>>>>>>>>>>>>>>>>>>>>>>>getServerVerCode() ");
    try {
     String verjson = NetHelper.httpStringGet(UPDATE_CHECKURL);
     Log.i("@@@@", verjson
       + "**************************************************");
     JSONArray array = new JSONArray(verjson);
     if (array.length() > 0) {
      JSONObject obj = array.getJSONObject(0);
      try {
       newVersionCode = Integer.parseInt(obj.getString("verCode"));
       newVersion = obj.getString("verName");
       updateInfo = "";
       Log.i("newVerCode", newVersionCode
         + "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
       Log.i("newVerName", newVersion
         + "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
       if (newVersionCode > curVersionCode) {
        hasNewVersion = true;
       }
      } catch (Exception e) {
       newVersionCode = -1;
       newVersion = "";
       updateInfo = "";
      }
     }
    } catch (Exception e) {
     Log.e("update", e.getMessage());
    }
    updateHandler.sendEmptyMessage(UPDATE_CHECKCOMPLETED);
   };
   // ***************************************************************
  }.start();
 }
 public void update() {
  Intent intent = new Intent(Intent.ACTION_VIEW);
  intent.setDataAndType(
    Uri.fromFile(new File(savefolder, UPDATE_SAVENAME)),
    "application/vnd.android.package-archive");
  ctx.startActivity(intent);
 }
 // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 public void downloadPackage()
 {
  new Thread() {
    @Override
    public void run() {
     try {
      URL url = new URL(UPDATE_DOWNURL);
      HttpURLConnection conn = (HttpURLConnection)url.openConnection();
      conn.connect();
      int length = conn.getContentLength();
      InputStream is = conn.getInputStream();
      File ApkFile = new File(savefolder,UPDATE_SAVENAME);
      if(ApkFile.exists())
      {
       ApkFile.delete();
      }
      FileOutputStream fos = new FileOutputStream(ApkFile);
      int count = 0;
      byte buf[] = new byte[512];
      do{
       int numread = is.read(buf);
       count += numread;
       progress =(int)(((float)count / length) * 100);
       updateHandler.sendMessage(updateHandler.obtainMessage(UPDATE_DOWNLOADING));
       if(numread <= 0){
        updateHandler.sendEmptyMessage(UPDATE_DOWNLOAD_COMPLETED);
        break;
       }
       fos.write(buf,0,numread);
      }while(!canceled);
      if(canceled)
      {
       updateHandler.sendEmptyMessage(UPDATE_DOWNLOAD_CANCELED);
      }
      fos.close();
      is.close();
     } catch (MalformedURLException e) {
      e.printStackTrace();
      updateHandler.sendMessage(updateHandler.obtainMessage(UPDATE_DOWNLOAD_ERROR,e.getMessage()));
     } catch(IOException e){
      e.printStackTrace();
      updateHandler.sendMessage(updateHandler.obtainMessage(UPDATE_DOWNLOAD_ERROR,e.getMessage()));
     }
    }
  }.start();
 }
 public void cancelDownload()
 {
  canceled = true;
 }
 Handler updateHandler = new Handler()
 {
  @Override
  public void handleMessage(Message msg) {
   switch (msg.what) {
   case UPDATE_CHECKCOMPLETED:
    callback.checkUpdateCompleted(hasNewVersion, newVersion);
    break;
   case UPDATE_DOWNLOADING:
    callback.downloadProgressChanged(progress);
    break;
   case UPDATE_DOWNLOAD_ERROR:
    callback.downloadCompleted(false, msg.obj.toString());
    break;
   case UPDATE_DOWNLOAD_COMPLETED:
    callback.downloadCompleted(true, "");
    break;
   case UPDATE_DOWNLOAD_CANCELED:
    callback.downloadCanceled();
   default:
    break;
   }
  }
 };
 public interface UpdateCallback {
  public void checkUpdateCompleted(Boolean hasUpdate,
    CharSequence updateInfo);
  public void downloadProgressChanged(int progress);
  public void downloadCanceled();
  public void downloadCompleted(Boolean sucess, CharSequence errorMsg);
 }
}

package com.trinet.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
public class NetHelper {
 public static String httpStringGet(String url) throws Exception {
  return httpStringGet(url, "utf-8");
 }
 /**
  *
  *
  * @param url
  * @return
  */
 public static Drawable loadImage(String url) {
  try {
   return Drawable.createFromStream(
     (InputStream) new URL(url).getContent(), "test");
  } catch (MalformedURLException e) {
   Log.e("exception", e.getMessage());
  } catch (IOException e) {
   Log.e("exception", e.getMessage());
  }
  return null;
 }
 public static String httpStringGet(String url, String enc) throws Exception {
  // This method for HttpConnection
  String page = "";
  BufferedReader bufferedReader = null;
  try {
   HttpClient client = new DefaultHttpClient();
   client.getParams().setParameter(CoreProtocolPNames.USER_AGENT, "android");
    HttpParams httpParams = client.getParams();
    HttpConnectionParams.setConnectionTimeout(httpParams, 3000);
    HttpConnectionParams.setSoTimeout(httpParams, 5000);
   HttpGet request = new HttpGet();
   request.setHeader("Content-Type", "text/plain; charset=utf-8");
   request.setURI(new URI(url));
   HttpResponse response = client.execute(request);
   bufferedReader = new BufferedReader(new InputStreamReader(response
     .getEntity().getContent(), enc));
   StringBuffer stringBuffer = new StringBuffer("");
   String line = "";
   String NL = System.getProperty("line.separator");
   while ((line = bufferedReader.readLine()) != null) {
    stringBuffer.append(line + NL);
   }
   bufferedReader.close();
   page = stringBuffer.toString();
   Log.i("page", page);
   System.out.println(page + "page");
   return page;
  } finally {
   if (bufferedReader != null) {
    try {
     bufferedReader.close();
    } catch (IOException e) {
     Log.d("BBB", e.toString());
    }
   }
  }
 }
 public static boolean checkNetWorkStatus(Context context) {
  boolean result;
  ConnectivityManager cm = (ConnectivityManager) context
    .getSystemService(Context.CONNECTIVITY_SERVICE);
  NetworkInfo netinfo = cm.getActiveNetworkInfo();
  if (netinfo != null && netinfo.isConnected()) {
   result = true;
   Log.i("NetStatus", "The net was connected");
  } else {
   result = false;
   Log.i("NetStatus", "The net was bad!");
  }
  return result;
 }
}

package com.trinet.util;
import java.lang.reflect.Field;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.View;
public class DialogHelper {
 public static void Alert(Context ctx, CharSequence title, CharSequence message,
   CharSequence okText, OnClickListener oklistener) {
  AlertDialog.Builder builder = createDialog(ctx, title, message);
  builder.setPositiveButton(okText, oklistener);
  builder.create().show();
 }
 public static void Alert(Context ctx, int titleId, int messageId,
   int okTextId, OnClickListener oklistener) {
  Alert(ctx, ctx.getText(titleId), ctx.getText(messageId), ctx.getText(okTextId), oklistener);
 }
 public static void Confirm(Context ctx, CharSequence title, CharSequence message,
   CharSequence okText, OnClickListener oklistener, CharSequence cancelText,
   OnClickListener cancellistener) {
  AlertDialog.Builder builder = createDialog(ctx, title, message);
  builder.setPositiveButton(okText, oklistener);
  builder.setNegativeButton(cancelText, cancellistener);
  builder.create().show();
 }
 public static void Confirm(Context ctx, int titleId, int messageId,
   int okTextId, OnClickListener oklistener, int cancelTextId,
   OnClickListener cancellistener) {
  Confirm(ctx, ctx.getText(titleId), ctx.getText(messageId), ctx.getText(okTextId), oklistener, ctx.getText(cancelTextId), cancellistener);
 }
 private static AlertDialog.Builder createDialog(Context ctx, CharSequence title,
   CharSequence message) {
  AlertDialog.Builder builder = new Builder(ctx);
  builder.setMessage(message);
  if(title!=null)
  {
   builder.setTitle(title);
  }
  return builder;
 }
 @SuppressWarnings("unused")
 private static AlertDialog.Builder createDialog(Context ctx,int titleId, int messageId) {
  AlertDialog.Builder builder = new Builder(ctx);
  builder.setMessage(messageId);
  builder.setTitle(titleId);
  return builder;
 }
 public static void ViewDialog(Context ctx, CharSequence title, View view,
   CharSequence okText, OnClickListener oklistener, CharSequence cancelText,
   OnClickListener cancellistener) {
 }
 public static void ViewDialog(Context ctx, int titleId, View view,
   int okTextId, OnClickListener oklistener, int cancelTextId,
   OnClickListener cancellistener) {
  ViewDialog(ctx, ctx.getText(titleId), view, ctx.getText(okTextId), oklistener, ctx.getText(cancelTextId), cancellistener);
 }
 //
 public static void SetDialogShowing(DialogInterface dialog, boolean showing)
 {
  try {
   Field field = dialog.getClass().getSuperclass().getDeclaredField("mShowing");
   field.setAccessible(true);
   field.set(dialog, showing);
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
}

// 自动更新回调函数
UpdateManager.UpdateCallback appUpdateCb = new UpdateManager.UpdateCallback()
{
  public void downloadProgressChanged(int progress) {
   if (updateProgressDialog != null
     && updateProgressDialog.isShowing()) {
    updateProgressDialog.setProgress(progress);
   }
  }
  public void downloadCompleted(Boolean sucess, CharSequence errorMsg) {
   if (updateProgressDialog != null
     && updateProgressDialog.isShowing()) {
    updateProgressDialog.dismiss();
   }
   if (sucess) {
    updateMan.update();
   } else {
    DialogHelper.Confirm(Update_TestActivity.this,
      R.string.dialog_error_title,
      R.string.dialog_downfailed_msg,
      R.string.dialog_downfailed_btnnext,
      new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog,
         int which) {
        updateMan.downloadPackage();
       }
      }, R.string.dialog_downfailed_btnnext, null);
   }
  }
  public void downloadCanceled()
  {
   // TODO Auto-generated method stub
  }
  public void checkUpdateCompleted(Boolean hasUpdate,
    CharSequence updateInfo) {
   if (hasUpdate) {
    DialogHelper.Confirm(Update_TestActivity.this,
      getText(R.string.dialog_update_title),
      getText(R.string.dialog_update_msg).toString()
      +updateInfo+
      getText(R.string.dialog_update_msg2).toString(),
        getText(R.string.dialog_update_btnupdate),
      new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog,
         int which) {
        updateProgressDialog = new ProgressDialog(
          Update_TestActivity.this);
        updateProgressDialog
          .setMessage(getText(R.string.dialog_downloading_msg));
        updateProgressDialog.setIndeterminate(false);
        updateProgressDialog
          .setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        updateProgressDialog.setMax(100);
        updateProgressDialog.setProgress(0);
        updateProgressDialog.show();
        updateMan.downloadPackage();
       }
      },getText( R.string.dialog_update_btnnext), null);
   }
  }
};

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />