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 Android教程網 >> Android技術 >> 關於Android編程 >> Android程序自動更新功能模塊的實現方法【附完整demo源碼下載】

Android程序自動更新功能模塊的實現方法【附完整demo源碼下載】

編輯：關於Android編程

本文實例講述了Android程序自動更新功能模塊的實現方法。分享給大家供大家參考，具體如下：

在程序啟動的時候檢測服務器上有沒有對應版本更新，如果有更新，提示用戶是否更新。

在程序啟動的時候首先調用更新模塊檢測服務器上存放的版本號跟當前程序的版本號如果大於當前版本號，彈出更新對話框，如果用戶選擇更新，則顯示當前更新狀態，然後替換當前程序。
程序調用版本更新檢測：

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);
  //沒有判斷網路是否連接
  //檢查是否有更新
  //如果有更新提示下載
  updateMan = new UpdateManager(Update_TestActivity.this, appUpdateCb);
  updateMan.checkUpdate();
}

執行檢測版本號以及回調更新提示

下載更新文件等實現：

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文件的路徑
  public static final String UPDATE_DOWNURL = "http://www.baidu.com/update/update_test.apk";
  //存放更新APK文件相應的版本說明路徑
  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;
  //從服務器上下載apk存放文件夾
  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);
 }
}

需要連接服務器模塊：

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;
 }
}

以及提示對話框：

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();
  }
 }
}

下面是又更新的話執行回調函數提示用戶：

// 自動更新回調函數
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);
   }
  }
};

要記得給程序添加權限：

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

完整實例代碼點擊此處本站下載。

更多關於Android相關內容感興趣的讀者可查看本站專題：《Android視圖View技巧總結》、《Android編程之activity操作技巧總結》、《Android操作SQLite數據庫技巧總結》、《Android操作json格式數據技巧總結》、《Android數據庫操作技巧總結》、《Android文件操作技巧匯總》、《Android編程開發之SD卡操作方法匯總》、《Android開發入門與進階教程》、《Android資源操作技巧匯總》及《Android控件用法總結》

希望本文所述對大家Android程序設計有所幫助。

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