Android开发之android_apk 在线安装（源代码分享）

android_apk的在线安装，除了要设计Android 客户端的代码外，还要搭建服务器的代码，仿真实现中Android软件的在线升级。

Android 客户端的代码截图如下。

MainActivity

package com.example.f03_packmanager;import java.io.File;
import java.util.concurrent.ExecutionException;import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.util.Log;
import android.view.View;
import android.widget.Button;public class MainActivity extends Activity {// 先在文件清单添加获取网络访问权限和准许读写sdcard的permission;private Button button;private ProgressDialog dialog;// 查询版本更新信息的进度对话框private String messagePath = "http://111.0.124.108:8080/http/servlet/Install";// 获取版本更新的URLprivate Message message;private PackUtiles packUtiles;// 获取当前版本信息的封装类private AlertDialog.Builder builder;// 下载更新的对话框@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);dialog = new ProgressDialog(MainActivity.this);dialog.setTitle("提示");dialog.setMessage("download.....");builder = new AlertDialog.Builder(MainActivity.this);builder.setTitle("下载更新");builder.setMessage("是否下载最新的版本？");builder.setCancelable(false);// 设置不能随意关闭提示下载更新的对话框button = (Button) this.findViewById(R.id.button1);packUtiles = new PackUtiles(MainActivity.this);button.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubtry {message = new getAPKUrl().execute(messagePath).get();boolean flag = packUtiles.update(packUtiles.getVersion(),message.getVsersionCode());Log.i("tag", "------->" + flag);if (flag) {builder.setPositiveButton("确定", new OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stubnew downLoadAPK().execute(message.getApkUrl());}});builder.setNegativeButton("取消", new OnClickListener() {@Overridepublic void onClick(DialogInterface arg0, int arg1) {// TODO Auto-generated method stub}});builder.create().show();}} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (ExecutionException e) {// TODO Auto-generated catch blocke.printStackTrace();}}});}// 获取版本更新信息的异步任务public class getAPKUrl extends AsyncTask<String, Void, Message> {@Overrideprotected void onPreExecute() {// TODO Auto-generated method stubsuper.onPreExecute();dialog.show();}@Overrideprotected Message doInBackground(String... params) {// TODO Auto-generated method stubreturn HttpUtiles.getMessage(params[0]);}@Overrideprotected void onPostExecute(Message result) {// TODO Auto-generated method stubsuper.onPostExecute(result);dialog.dismiss();}}public class downLoadAPK extends AsyncTask<String, Void, Void> {@Overrideprotected void onPreExecute() {// TODO Auto-generated method stubsuper.onPreExecute();}@Overrideprotected Void doInBackground(String... params) {// TODO Auto-generated method stubString uri=HttpUtiles.downLoadApk(params[0]);Log.i("TAG2", "-------->"+uri);//通过文件路径安装指定版本Uri uri2=Uri.fromFile(new File(uri));Intent intent=new Intent(Intent.ACTION_VIEW);intent.setDataAndType(uri2, "application/vnd.android.package-archive");startActivity(intent);return null;}@Overrideprotected void onPostExecute(Void result) {// TODO Auto-generated method stubsuper.onPostExecute(result);}}}

HttpUtiles获取服务器的版本信息，一个方法为以json格式获取版本的数据，一个为下载最新的版本到sdcard中

package com.example.f03_packmanager;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;import android.os.Environment;
import android.util.Log;public class HttpUtiles {//下载版本信息，格式为jsonpublic static Message getMessage(String path) {Message message = new Message();HttpClient client = new DefaultHttpClient();HttpPost httpPost = new HttpPost(path);try {HttpResponse httpResponse = client.execute(httpPost);if(httpResponse.getStatusLine().getStatusCode()==200){String json=EntityUtils.toString(httpResponse.getEntity());try {JSONObject  jsonObject=new JSONObject(json).getJSONObject("message");message.setVsersionCode(jsonObject.getInt("vsersionCode"));message.setApkUrl(jsonObject.getString("apkUrl"));} catch (JSONException e) {// TODO Auto-generated catch blocke.printStackTrace();}}} catch (ClientProtocolException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return message;}//下载指定版本到sdcard中public static String downLoadApk(String path){byte[]data=null;String uri=null;HttpClient client = new DefaultHttpClient();HttpPost httpPost = new HttpPost(path);FileOutputStream fileOutputStream=null;try {HttpResponse httpResponse = client.execute(httpPost);if(httpResponse.getStatusLine().getStatusCode()==200){data=EntityUtils.toByteArray(httpResponse.getEntity());if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){File file=Environment.getExternalStorageDirectory();String name=path.substring(path.lastIndexOf("/")+1,path.length());fileOutputStream=new FileOutputStream(new File(file, name));fileOutputStream.write(data, 0, data.length);uri=file.getAbsolutePath()+"/"+name;}}} catch (ClientProtocolException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{if(fileOutputStream!=null){try {fileOutputStream.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}Log.i("HTTP", "-------->"+uri);return uri;}}

Message类指定数据返回的格式

package com.example.f03_packmanager;public class Message {private int vsersionCode;private String apkUrl;public int getVsersionCode() {return vsersionCode;}public void setVsersionCode(int vsersionCode) {this.vsersionCode = vsersionCode;}public String getApkUrl() {return apkUrl;}public void setApkUrl(String apkUrl) {this.apkUrl = apkUrl;}@Overridepublic String toString() {return "Message [vsersionCode=" + vsersionCode + ", apkUrl=" + apkUrl+ "]";}}

PackUtilse获取软件当前的版本信息

package com.example.f03_packmanager;import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;public class PackUtiles {private Context context;private PackageManager manager;private PackageInfo info;public PackUtiles(Context context) {// TODO Auto-generated constructor stubthis.context = context;initDate();}public void initDate() {manager = context.getPackageManager();try {info = manager.getPackageInfo(context.getPackageName(),PackageManager.GET_ACTIVITIES);} catch (NameNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();}}public int getVersion() {return info.versionCode;}public String getVersionName(){return info.versionName;}//比较本地版本和服务器的版本号的大小public boolean update(int oldVersion,int newVersion){boolean flag=newVersion>oldVersion?true:false;return flag;}
}

到此Android的代码就编写完成了，下面我们来介绍一下服务器端的代码，事先要导入json的jar包，另外一点注意的是所有的http地址在自己使用的时候都记得改成自己笔记本的ip地址，此外别忘了把要更新的软件apk放在webroot目录下。

package com.login.install;import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONSerializer;public class Install extends HttpServlet {/*** Constructor of the object.*/public Install() {super();}/*** Destruction of the servlet. <br>*/public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}/*** The doGet method of the servlet. <br>** This method is called when a form has its tag value method equals to get.* * @param request the request send by the client to the server* @param response the response send by the server to the client* @throws ServletException if an error occurred* @throws IOException if an error occurred*/public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {this.doPost(request, response);}/*** The doPost method of the servlet. <br>** This method is called when a form has its tag value method equals to post.* * @param request the request send by the client to the server* @param response the response send by the server to the client* @throws ServletException if an error occurred* @throws IOException if an error occurred*/public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html");PrintWriter out = response.getWriter();Message message=new Message();message.setVsersionCode(2);message.setApkUrl("http://111.0.124.108:8080/http/F03_PackManager.apk");Map<String, Object> map=new HashMap<String, Object>();map.put("message", message);out.print(JSONSerializer.toJSON(map));out.flush();out.close();}/*** Initialization of the servlet. <br>** @throws ServletException if an error occurs*/public void init() throws ServletException {// Put your code here}}

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