android APP实现更新 PHP后台服务器

最近自己在做一款APP，需要实现APP版本更新功能，从网上找了许多资料，只找到了关于移动端的实现。经过我的研究，终于实现了比较完整的android APP版本更新功能，在此分享给广大朋友，但是我的ios端还没实现，但是传输是基于的http协议，实现原理应该是大同小异的。接下来进入正文。

PHP后台服务器实现

后台的实现是基于的thinkPHP框架。对于PHP开发框架thinkPHP框架的朋友，只要去官网下载手册，看那么几页，我想你应该就懂了。

接下来直接给出PHP代码实现。

对于这个文件，大家需要修改的便是命名空间。

namespace API\Controller;use Think\Controller;

至于为什么，大家需要了解下PHP的基础知识，和thinkPHP框架的开发流程就可以了，很快的。


    show('
     
     :)
     娆㈣繋浣跨敤 ThinkPHP锛?/p>
[ 鎮ㄧ幇鍦ㄨ闂殑鏄疕ome妯″潡鐨処ndex鎺у埗鍣?]
    
','utf-8');        echo "hello";    }    function updateInfo(){        $result=array(            'version'=>'1.0',            'description'=>'目前已经更新了卡屏功能',            'url'=>'http://localhost/index.php/API/Server/download'        );        echo json_encode($result);    }    function download(){        $file = "/tmp/test.apk";        $filename = basename($file);//返回路径中的文件名部分。        /*         * header() 函数向客户端发送原始的 HTTP 报头。         * 必须在任何实际的输出被发送之前调用 header() 函数         * */        header("Content-type: application/octet-stream");//处理中文文件名        $ua = $_SERVER["HTTP_USER_AGENT"];        $encoded_filename = rawurlencode($filename);        if (preg_match("/MSIE/", $ua)) {            header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');        } else if (preg_match("/Firefox/", $ua)) {            header("Content-Disposition: attachment; filename*=\"utf8''" . $filename . '"');        } else {            header('Content-Disposition: attachment; filename="' . $filename . '"');        }        header("Content-Length: ". filesize($file));        /*         * readfile() 函数输出一个文件。         * 该函数读入一个文件并写入到输出缓冲。         * 若成功，则返回从文件中读入的字节数。若失败，则返回 false。         */        ob_clean();        flush();        readfile($file);    }}

这里需要解释的是

function updateInfo()

这个方法实现的是获得最近的版本信息。然后和移动端进行匹配

URL地址是:http://localhost/index.php/API/Server/updateinfo,大家可以根据自己的服务器或者云服务器的IP地址进行修改。

function download(){

这个方法实现的是下载功能，也就是核心方法。移动端需要访问到这个IP地址才能进行文件的下载。

URL地址是:http://localhost/index.php/API/Server/download,大家可以根据自己的服务器或者云服务器的IP地址进行修改。

关于需要下载的文件路径，我是存放在ubuntu系统的/tmp目录下的

android移动端实现

移动端我直接给出了实现放的类和方法以及活动，就不解释了。

只给出基本的原理

1、从这个URL地址http://localhost/index.php/API/Server/updateinfo获取最新的版本信息，通过http协议和json协议解析出基本的版本信息，然后存储在UpdateInfo类中，然后和APP的当前版本进行比较，如果有最新版则下载。

2、关于下载，android端的核心实现代码是

new Thread() {         public void run() {                    HttpClient client = new DefaultHttpClient();            HttpGet get = new HttpGet(url);            HttpResponse response;            try {               response = client.execute(get);               HttpEntity entity = response.getEntity();               int length = (int) entity.getContentLength();                                        progressDialog.setMax(length);               InputStream is = entity.getContent();               FileOutputStream fileOutputStream = null;               if (is != null) {                  File file = new File(                        Environment.getExternalStorageDirectory(),                        "Test.apk");                  fileOutputStream = new FileOutputStream(file);                        byte[] buf = new byte[10];                     int ch = -1;                  int process = 0;                  while ((ch = is.read(buf)) != -1) {                            fileOutputStream.write(buf, 0, ch);                     process += ch;                     progressDialog.setProgress(process);                  }               }               fileOutputStream.flush();               if (fileOutputStream != null) {                  fileOutputStream.close();               }               down();            } catch (ClientProtocolException e) {               e.printStackTrace();            } catch (IOException e) {               e.printStackTrace();            }         }      }.start();

而PHP的实现代码是download中的

ob_clean();flush();readfile($file);

至于底层的原理是，readfile方法封装了，http文件传输的基本实现，大家可以百度下，以上两段代码配合，一个客户端，一个服务器，就能够实现基于http文件的传输.

最后给出android端的代码

import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;import com.example.administrator.dongzhiwuapp.R;public class SetActivity extends Activity {   private UpdateInfo info;   private ProgressDialog progressDialog;//下载进度条窗口   UpdateInfoService updateInfoService;   @Override   protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.update);        Button button=(Button)findViewById(R.id.button1);       button.setOnClickListener(new OnClickListener() {         @Override         public void onClick(View v) {            checkUpdate();         }      });   }   private void checkUpdate(){      new Thread() {         public void run() {            try {               updateInfoService = new UpdateInfoService(SetActivity.this);               info = updateInfoService.getUpDateInfo();               handler1.sendEmptyMessage(0);            } catch (Exception e) {               e.printStackTrace();            }         };      }.start();   }      @SuppressLint("HandlerLeak")   private Handler handler1 = new Handler() {      public void handleMessage(Message msg) {         if (updateInfoService.isNeedUpdate()) {            showUpdateDialog();         }      }   };   private void showUpdateDialog() {      AlertDialog.Builder builder = new AlertDialog.Builder(this);      builder.setIcon(android.R.drawable.ic_dialog_info);      builder.setTitle("请升级APP版本至" + info.getVersion());      builder.setMessage(info.getDescription());      builder.setCancelable(false);      builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {         @Override         public void onClick(DialogInterface dialog, int which) {            if (Environment.getExternalStorageState().equals(                  Environment.MEDIA_MOUNTED)) {               downFile(info.getUrl());            } else {               Toast.makeText(SetActivity.this, "SD卡不可用，请插入SD卡",                     Toast.LENGTH_SHORT).show();            }         }      });      builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {         @Override         public void onClick(DialogInterface dialog, int which) {         }      });      builder.create().show();   }   //进入下载   void downFile(final String url) {       progressDialog = new ProgressDialog(SetActivity.this);      progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);      progressDialog.setTitle("正在下载");      progressDialog.setMessage("请稍后...");      progressDialog.setProgress(0);      progressDialog.show();      updateInfoService.downLoadFile(url, progressDialog,handler1);   }   }

import android.annotation.SuppressLint;import android.app.Activity;import android.app.AlertDialog;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.os.Environment;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;import com.example.administrator.dongzhiwuapp.R;public class SetActivity extends Activity {   private UpdateInfo info;   private ProgressDialog progressDialog;//下载进度条窗口   UpdateInfoService updateInfoService;   @Override   protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);      setContentView(R.layout.update);        Button button=(Button)findViewById(R.id.button1);       button.setOnClickListener(new OnClickListener() {         @Override         public void onClick(View v) {            checkUpdate();         }      });   }   private void checkUpdate(){      new Thread() {         public void run() {            try {               updateInfoService = new UpdateInfoService(SetActivity.this);               info = updateInfoService.getUpDateInfo();               handler1.sendEmptyMessage(0);            } catch (Exception e) {               e.printStackTrace();            }         };      }.start();   }      @SuppressLint("HandlerLeak")   private Handler handler1 = new Handler() {      public void handleMessage(Message msg) {         if (updateInfoService.isNeedUpdate()) {            showUpdateDialog();         }      }   };   private void showUpdateDialog() {      AlertDialog.Builder builder = new AlertDialog.Builder(this);      builder.setIcon(android.R.drawable.ic_dialog_info);      builder.setTitle("请升级APP版本至" + info.getVersion());      builder.setMessage(info.getDescription());      builder.setCancelable(false);      builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {         @Override         public void onClick(DialogInterface dialog, int which) {            if (Environment.getExternalStorageState().equals(                  Environment.MEDIA_MOUNTED)) {               downFile(info.getUrl());            } else {               Toast.makeText(SetActivity.this, "SD卡不可用，请插入SD卡",                     Toast.LENGTH_SHORT).show();            }         }      });      builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {         @Override         public void onClick(DialogInterface dialog, int which) {         }      });      builder.create().show();   }   //进入下载   void downFile(final String url) {       progressDialog = new ProgressDialog(SetActivity.this);      progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);      progressDialog.setTitle("正在下载");      progressDialog.setMessage("请稍后...");      progressDialog.setProgress(0);      progressDialog.show();      updateInfoService.downLoadFile(url, progressDialog,handler1);   }   }

/** * 获取服务器地址 */public class GetServerUrl{   static String url="http://";            public static String getUrl() {      return url;   }}

/***  版本更新信息类*  1、获取版本字符串信息*  2、设置版本字符串信息*  3、获取版本描述*  4、设置版本描述*  5、获取URL地址*  6、设置URL地址* */public class UpdateInfo{        private String version;        private String description;        private String url;                public String getVersion()        {                return version;        }        public void setVersion(String version)        {                this.version = version;        }        public String getDescription()        {                return description;        }        public void setDescription(String description)        {                this.description = description;        }        public String getUrl()        {                return url;        }        public void setUrl(String url)        {                this.url = url;        }        }

import android.app.ProgressDialog;import android.content.Context;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.Environment;import android.os.Handler;import android.util.Log;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONObject;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;public class UpdateInfoService {   ProgressDialog progressDialog;   Handler handler;   Context context;   UpdateInfo updateInfo;      public UpdateInfoService(Context context){      this.context=context;   }   /*   * 获取更新信息   * 版本信息存储在服务器的update.txt文件中   * 更新信息包括:   * 1、版本信息   * 2、最新版本具体描述   * 3、下载地址   *   * */   public UpdateInfo getUpDateInfo() throws Exception {      HttpClient httpClient = new DefaultHttpClient();      HttpGet httpGet = new HttpGet("http://localhost/index.php/API/Server/updateInfo");      HttpResponse httpResponse = httpClient.execute(httpGet);      UpdateInfo updateInfo = new UpdateInfo();      if (httpResponse.getStatusLine().getStatusCode() == 200)//请求相应成功      {         HttpEntity entity = httpResponse.getEntity();         String response = EntityUtils.toString(entity, "utf-8");         JSONObject jsonObject=new JSONObject(response);         Log.d("dsdsada", "getUpDateInfo: "+response);         updateInfo.setVersion(jsonObject.getString("version"));         updateInfo.setDescription(jsonObject.getString("description"));         updateInfo.setUrl(jsonObject.getString("url"));         this.updateInfo = updateInfo;         return updateInfo;      }      updateInfo.setVersion("");      updateInfo.setDescription("");      updateInfo.setUrl("");      this.updateInfo = updateInfo;      return updateInfo;   }   /*    *判断是否需要更新    */   public boolean isNeedUpdate(){         String new_version = updateInfo.getVersion();         String now_version="";         try {            PackageManager packageManager = context.getPackageManager();            PackageInfo packageInfo = packageManager.getPackageInfo(                  context.getPackageName(), 0);            now_version= packageInfo.versionName;         } catch (NameNotFoundException e) {            e.printStackTrace();         }         if (new_version.equals(now_version)) {            return false;         } else {            return true;         }   }   /*   *   * 下载文件   * */   public void downLoadFile(final String url,final ProgressDialog pDialog,Handler h){      progressDialog=pDialog;      handler=h;      new Thread() {         public void run() {                    HttpClient client = new DefaultHttpClient();            HttpGet get = new HttpGet(url);            HttpResponse response;            try {               response = client.execute(get);               HttpEntity entity = response.getEntity();               int length = (int) entity.getContentLength();                                        progressDialog.setMax(length);               InputStream is = entity.getContent();               FileOutputStream fileOutputStream = null;               if (is != null) {                  File file = new File(                        Environment.getExternalStorageDirectory(),                        "Test.apk");                  fileOutputStream = new FileOutputStream(file);                        byte[] buf = new byte[10];                     int ch = -1;                  int process = 0;                  while ((ch = is.read(buf)) != -1) {                            fileOutputStream.write(buf, 0, ch);                     process += ch;                     progressDialog.setProgress(process);                  }               }               fileOutputStream.flush();               if (fileOutputStream != null) {                  fileOutputStream.close();               }               down();            } catch (ClientProtocolException e) {               e.printStackTrace();            } catch (IOException e) {               e.printStackTrace();            }         }      }.start();   }   //下载完毕，退出下载，进入安装APP步骤   void down() {      handler.post(new Runnable() {         public void run() {            progressDialog.cancel();            update();         }      });   }   //安装最新版本APP   void update() {      Intent intent = new Intent(Intent.ACTION_VIEW);      intent.setDataAndType(Uri.fromFile(new File(Environment            .getExternalStorageDirectory(), "Test.apk")),            "application/vnd.android.package-archive");      context.startActivity(intent);   }   }

github项目地址:https://github.com/huanghuaisong/android-php-appUpdate/

原文地址