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本帖最后由 青玄 于 2014-12-4 09:21 编辑
版本版本更新： 实现原理：通过向服务器端发送请求，获取服务端的版本信息，然后再与本机上的软件进行比对，如果版本不一致的话，那就得更新版本！ 首先需要一个打开的欢迎界面：
在这个欢迎界面打开的时候就要判断此软件的版本是否要更新！
需要说明的是在服务器端这边的时候，发给客户顿的是一个json数据，为了更加明确的说明一下，服务端的大概代码是这样的：
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONArray;
import cn.cxrh.daomain.mobile;
public class MobileSafeServlet extends HttpServlet {
File file = null;
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
List<mobile> mobiles = new ArrayList<mobile>();
mobiles.add(new mobile("2.0","http://192.168.128.1:8080/safemobile_server/software/qqliulanqi.apk","小白马提醒您，软件是否更新！^_^！"));
JSONArray json = JSONArray.fromObject(mobiles);
resp.getOutputStream().write(json.toString().getBytes("utf-8"));
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doGet(req, resp);
}
}
注意：这里要说明的是，在服务端进行json数据的发送的时候，还需要用到json的jar包！ 然后就是客户端这边的处理了！ 首先是需要的一个utils工具类： package com.example.safemobile_test.utils;
import java.io.ByteArrayOutputStream;
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.ProtocolException;
import java.net.URL;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.ProgressDialog;
import android.content.Context;
import android.os.Environment;
import android.util.Log;
import com.example.safemobile_test.daomain.Info;
public class Utils {
/**
* 读取服务端发过来的输入流信息，并把它转化为字符串
* @param is 输入流
* @return
* @throws Exception
*/
public static String readJson(InputStream is) throws Exception
{
ByteArrayOutputStream bao = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = -1;
while((len = is.read(buffer)) != -1)
{
bao.write(buffer, 0, len);
}
is.close();
bao.close();
return new String(bao.toByteArray());
}
/**
* 用json解析来获取服务端的信息
* @param path 这个得路径指的是需要访问服务器端的地址
* @return 返回的是一个javabean的对象
* @throws Exception
*/
public static Info getServerInfo(String path) throws MalformedURLException,ProtocolException,JSONException,IOException,Exception
{
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setReadTimeout(5000);
int code = conn.getResponseCode();
if(code == 200)
{
InputStream is = conn.getInputStream();
JSONArray jsonArray = new JSONArray(readJson(is));
Info info = new Info();
for(int i=0; i < jsonArray.length(); i++)
{
JSONObject object = jsonArray.getJSONObject(i);
info.setVersion(object.getString("version"));
info.setDesc(object.getString("desc"));
info.setPath(object.getString("path"));
Log.i("Utils", object.getString("version"));
}
return info;
}
return null;
}
/**
* 从服务端下载需要更新的软件
* @param file 要存放到sdcard的文件的对象
* @param path 要访问服务端的地址
* @param pd 进度条
* @return 返回存放文件的文件对象
*/
public static File updateSoft(File file,String path,ProgressDialog pd)
{
try {
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setReadTimeout(5000);
int fileLength = conn.getContentLength();
pd.setMax(fileLength);
int code = conn.getResponseCode();
if(code == 200)
{
FileOutputStream fos = new FileOutputStream(file);
InputStream is= conn.getInputStream();
byte[] buffer = new byte[1024];
int len = -1;
int total = 0;
while((len = is.read(buffer)) != -1)
{
total += len;
fos.write(buffer, 0, len);
pd.setProgress(total);
}
fos.close();
is.close();
pd.dismiss();
return file;
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
然后就是版本更新的主要代码，也是主类的代码：
package com.example.safemobile_test;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import org.apache.http.ProtocolException;
import org.json.JSONException;
import com.example.safemobile_test.daomain.Info;
import com.example.safemobile_test.utils.Utils;
import com.example.service.BlackNumberService;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
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.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
public class splashactivity extends Activity {
protected static final int URL_ERROR = 1;
protected static final int PROTOCOL_ERROR = 2;
protected static final int JSON_PARSER_ERROR = 3;
protected static final int INTERNET_ERROR = 4;
protected static final int READ_DATA_ERROR = 5;
protected static final int LOAD_MAIN = 6;
protected static final int SHOW_DIALOG = 7;
protected static final int UPDADTE_SOFT = 8;
protected static final int DOWNLOAD_FILE_FAILURE = 9;
private TextView tv_splash_version;
private Handler handler;
private long startTime = 0;
private Info info = null;
private ProgressDialog pd;
private File file;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
tv_splash_version = (TextView) this.findViewById(R.id.te_splash_version);
this.tv_splash_version.setText("版本：" + this.getVersion()); //获取当前的版本
handler = new Handler(){
@Override
public void handleMessage(Message msg) { //接收消息队列里面的消息
// TODO Auto-generated method stub
switch (msg.what) {
case URL_ERROR:
Toast.makeText(splashactivity.this, "url错误", Toast.LENGTH_LONG).show();
loadMain();
break;
case PROTOCOL_ERROR:
Toast.makeText(splashactivity.this, "请求方式错误", Toast.LENGTH_LONG).show();
loadMain();
break;
case JSON_PARSER_ERROR:
Toast.makeText(splashactivity.this, "JSON解析错误", Toast.LENGTH_LONG).show();
loadMain();
break;
case INTERNET_ERROR:
Toast.makeText(splashactivity.this, "网络链接错误", Toast.LENGTH_LONG).show();
loadMain();
break;
case READ_DATA_ERROR:
Toast.makeText(splashactivity.this, "数据解析错误", Toast.LENGTH_LONG).show();
loadMain();
break;
case LOAD_MAIN:
loadMain();
break;
case SHOW_DIALOG:
showDialog();
break;
case UPDADTE_SOFT:
File file = (File) msg.obj;
installApk(file);
break;
case DOWNLOAD_FILE_FAILURE:
Toast.makeText(splashactivity.this, "文件下载失败", Toast.LENGTH_LONG).show();
loadMain();
break;
}
}
};
/********************************************************************************************/
//子线程去检查服务器是否有新的版本
this.checkServiceVersion();
}
/**
* ***************此方法是查找此软件的版本是否要更新
*/
private void checkServiceVersion()
{
new Thread() //开一个子线程，因为主线程不要太多的工作，不然会容易阻塞的
{
public void run()
{
//连接互联网
startTime = System.currentTimeMillis();
String path = "http://192.168.128.1:8080/safemobile_server/safemobile_ser"; //访问服务端的地址
Message msg = Message.obtain(); //获得消息对象
try
{
//loadMain();
info = Utils.getServerInfo(path); //通过json解析获得需要的信息
Log.i("splashactivity", "版本号："+ info.getVersion());
if(getVersion().equals(info.getVersion()))
{
msg.what = LOAD_MAIN;
}else
{
msg.what = SHOW_DIALOG;
}
} catch (MalformedURLException e) {
e.printStackTrace();
msg.what=URL_ERROR;
} catch (ProtocolException e) {
e.printStackTrace();
msg.what=PROTOCOL_ERROR;
}catch (JSONException e) {
msg.what=JSON_PARSER_ERROR;
}catch (IOException e) {
e.printStackTrace();
msg.what=INTERNET_ERROR;
}catch (Exception e) {
e.printStackTrace();
msg.what=READ_DATA_ERROR;
}finally
{
long edntime = System.currentTimeMillis();
long data = edntime-startTime;
if(data < 2000)
{
try
{
Thread.sleep(2000 - data);
}catch(Exception e)
{
e.printStackTrace();
}
handler.sendMessage(msg);
}
}
}
}.start();
}
/**
* 如果要更新的话就显示一个更新的对话框
*/
public void showDialog()
{
AlertDialog.Builder builder = new Builder(this);
builder.setIcon(R.drawable.ic_launcher);
builder.setTitle("升级提醒");
builder.setMessage(info.getDesc());
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
// TODO Auto-generated method stub
loadMain();
}
});
builder.setNegativeButton("否", new OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
loadMain();
}
});
builder.setPositiveButton("是", new OnClickListener(){
@Override
public void onClick(DialogInterface dialog, int which) {
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
{
file = new File(Environment.getExternalStorageDirectory(), info.getPath().substring(info.getPath().lastIndexOf("/")+1));
pd = new ProgressDialog(splashactivity.this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setIcon(R.drawable.ic_launcher);
pd.setTitle("下载文件");
pd.setMessage("文件正在下载，请稍后...");
pd.show();
new Thread(){
public void run()
{
File newFile = Utils.updateSoft(file, info.getPath(), pd);
if(newFile !=null)
{
installApk(newFile);
}else
{
Log.i("splashactivity-->newfile: ", newFile+"" + info.getPath());
Message msg = Message.obtain();
msg.what = DOWNLOAD_FILE_FAILURE;
handler.sendMessage(msg);
}
}
}.start();
}else
{
Toast.makeText(splashactivity.this, "sdcard不可用", Toast.LENGTH_LONG).show();
}
}
});
builder.show();
}
/**
* 跳转主页面的方法
*/
public void loadMain()
{
Intent intent = new Intent(this,MainActivity.class);
startActivity(intent);
// Intent blackNumberintent = new Intent(this, BlackNumberService.class);
// startService(blackNumberintent);
finish();
}
/**
*
* 安装应用
* @param file
*/
public void installApk(File file)
{
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
this.finish();
}
/**
* 获取当前的版本
*/
public String getVersion()
{
PackageManager packageManager = this.getPackageManager();
try
{
PackageInfo info = packageManager.getPackageInfo(getPackageName(), PackageManager.GET_ACTIVITIES);
String version = info.versionName;
return version;
}catch(Exception e)
{
e.printStackTrace();
return "";
}
}
}
如果地址错误或者连不上网的话，就出现这个：
如果连接正确的话就是：
然后就进行下载更新：
完成安装之后就进入到主界面：
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狗仔卡
发表于 2014-12-4 09:20:09
置顶卡
千斤顶
显身卡
强烈支持玄玄哦~
楼主
发表于 2015-1-1 23:02:46