[Android通信]版本更新

参考链接：

http://www.cnblogs.com/hxsyl/archive/2014/05/14/3727291.html

环境：

MyEclipse + 局域网

pc在局域网中的IP地址：

在控制面板---网络和Internet---网络和共享中心，点击本地连接---详细信息，其中IPv4地址即为局域网IP地址。

1.服务器端

新建一个web project，命名为UpdateServer，然后开启tomcat服务器，并把UpdateServer部署在服务器上。然后在UpdateServer/WebRoot下新建一个json文件，命名为version，添加如下的内容：

{"version":"2.0","apk":"http://172.25.225.24:8080/UpdateServer/UpdateClient.apk","description":"检测到最新版本2.0，请及时更新!"}

然后在浏览器输入：http://172.25.225.24:8080/UpdateServer/version.json，如果访问成功，则浏览器会出现下载json文件的提示。

172.25.225.24是pc在局域网中的IP地址，8080是tomcat的端口号

2.客户端

新建一个android project，命名为UpdateClient，然后在strings.xml中添加：

<string name="version_server">http://172.25.225.24:8080/UpdateServer/version.json</string>

当检查版本更新时，就可以访问这个url获取服务器的版本信息了。

在AndroidManifest.xml中添加访问网络和sd卡的权限：

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

package com.example.updateclient;public class VersionInfo {private String version;private String apk;private String description;public String getVersion() {return version;}public void setVersion(String version) {this.version = version;}public String getApk() {return apk;}public void setApk(String apk) {this.apk = apk;}public String getDescription() {return description;}public void setDescription(String description) {this.description = description;}}

package com.example.updateclient;import java.io.BufferedInputStream;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import android.app.ProgressDialog;import android.os.Environment;public class DownLoadManager {public static File getFileFromServer(String path, ProgressDialog pd) throws Exception {//如果相等的话表示当前的sdcard挂载在手机上并且是可用的if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){URL url = new URL(path);HttpURLConnection conn =  (HttpURLConnection) url.openConnection();conn.setConnectTimeout(5000);//获取到文件的大小 pd.setMax(conn.getContentLength());File file = new File(Environment.getExternalStorageDirectory(), "update.apk");FileOutputStream fos = new FileOutputStream(file);InputStream is = conn.getInputStream();BufferedInputStream bis = new BufferedInputStream(is);byte[] buffer = new byte[1024];int len;int total = 0;while((len =bis.read(buffer)) != -1){fos.write(buffer, 0, len);total += len;//获取当前下载量pd.setProgress(total);}fos.close();bis.close();is.close();return file;}else {return null;}}}

package com.example.updateclient;import java.io.File;import org.json.JSONException;import org.json.JSONObject;import com.android.volley.RequestQueue;import com.android.volley.Response;import com.android.volley.Response.Listener;import com.android.volley.VolleyError;import com.android.volley.toolbox.JsonObjectRequest;import com.android.volley.toolbox.Volley;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.ProgressDialog;import android.content.DialogInterface;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.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity {private RequestQueue requestQueue;private VersionInfo versionInfo;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);requestQueue = Volley.newRequestQueue(getApplicationContext());versionInfo = new VersionInfo();((Button)findViewById(R.id.checkUpdate)).setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {checkVersion();}});}//获取客户端的版本信息private String getClientVersion(){//getPackageName()是你当前类的包名，0代表是获取版本信息  PackageManager packageManager = getPackageManager();PackageInfo packInfo = null;try {packInfo = packageManager.getPackageInfo(getPackageName(),0);} catch (NameNotFoundException e) {e.printStackTrace();}return packInfo.versionName;}//检查版本信息private void checkVersion(){String url = getResources().getString(R.string.version_server);JsonObjectRequest jor = new JsonObjectRequest(url, null, new Listener<JSONObject>() {@Overridepublic void onResponse(JSONObject response) {try {versionInfo.setVersion(response.getString("version"));versionInfo.setApk(response.getString("apk"));versionInfo.setDescription(response.getString("description"));if(getClientVersion().equalsIgnoreCase(versionInfo.getVersion())) {Toast.makeText(getApplicationContext(), "已是最新版本", Toast.LENGTH_SHORT).show();} else {showUpdataDialog();}} catch (JSONException e) {e.printStackTrace();}}}, new Response.ErrorListener() {@Overridepublic void onErrorResponse(VolleyError error) {Log.v("error", error.toString());}});requestQueue.add(jor);}/* * 弹出对话框的步骤：  *  1.创建alertDialog的builder.    *  2.要给builder设置属性, 对话框的内容,样式,按钮  *  3.通过builder 创建一个对话框  *  4.对话框show()出来  */private void showUpdataDialog() {AlertDialog.Builder builer = new Builder(MainActivity.this);builer.setTitle("版本升级");builer.setMessage(versionInfo.getDescription());builer.setPositiveButton("确定", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(getApplicationContext(), "开始下载", Toast.LENGTH_SHORT).show();downLoadApk();}});builer.setNegativeButton("取消", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {Toast.makeText(getApplicationContext(), "取消下载", Toast.LENGTH_SHORT).show();}});AlertDialog dialog = builer.create();dialog.show();}private void downLoadApk() {final ProgressDialog pd = new ProgressDialog(MainActivity.this);pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);pd.setMessage("正在下载更新");pd.show();new Thread() {public void run() {try {File file = DownLoadManager.getFileFromServer(versionInfo.getApk(), pd);sleep(3000);installApk(file);pd.dismiss();//结束掉进度条对话框} catch (Exception e) {e.printStackTrace();}};}.start();}private void installApk(File file) {Intent intent = new Intent();      //执行动作      intent.setAction(Intent.ACTION_VIEW);      //执行的数据类型      intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");      startActivity(intent);  }}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView         android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="当前版本：1.0"        android:textSize="50sp" />        <Button        android:id="@+id/checkUpdate"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="检查更新" /></LinearLayout>

需要用到volley的jar包，下载地址：

http://pan.baidu.com/s/1c0HiMnY

3.测试

在AndroidManifest.xml中修改android:versionName为2.0，然后修改布局文件的TextView为"当前版本：2.0"，打包android工程，把apk放在UpdateServer/WebRoot下。这个就是新版的apk了。

在AndroidManifest.xml中修改android:versionName为1.0，然后修改布局文件的TextView为"当前版本：1.0"，打包android工程，把apk运行在模拟器上。