目录

• 项目结构图
• 源代码
• 运行结果
• 项目源代码

项目结构图

源代码

清单 01.  SplashActivity.java

package com.coderdream.mobilesafe.activity;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.xmlpull.v1.XmlPullParserException;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.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.AlphaAnimation;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;import com.coderdream.mobilesafe.R;
import com.coderdream.mobilesafe.domain.UpdateInfo;
import com.coderdream.mobilesafe.engine.UpdateInfoParser;public class SplashActivity extends Activity {private TextView tv_splash_version;private UpdateInfo info;private static final int GET_INFO_SUCCESS = 10;private static final int SERVER_ERROR = 11;private static final int SERVER_URL_ERROR = 12;private static final int PROTOCOL_ERROR = 13;private static final int IO_ERROR = 14;private static final int XML_PARSE_ERROR = 15;private static final int DOWNLOAD_SUCCESS = 16;private static final int DOWNLOAD_ERROR = 17;protected static final String TAG = "SplashActivity";private long startTime;private RelativeLayout rl_splash;private long endTime;private ProgressDialog pd;private Handler handler = new Handler() {public void handleMessage(android.os.Message msg) {switch (msg.what) {case XML_PARSE_ERROR:Toast.makeText(getApplicationContext(), "xml解析错误", Toast.LENGTH_LONG).show();// loadMainUI();break;case IO_ERROR:Toast.makeText(getApplicationContext(), "I/O错误", Toast.LENGTH_LONG).show();// loadMainUI();break;case PROTOCOL_ERROR:Toast.makeText(getApplicationContext(), "协议不支持", Toast.LENGTH_LONG).show();// loadMainUI();break;case SERVER_URL_ERROR:Toast.makeText(getApplicationContext(), "服务器路径不正确", Toast.LENGTH_LONG).show();// loadMainUI();break;case SERVER_ERROR:Toast.makeText(getApplicationContext(), "服务器内部异常", Toast.LENGTH_LONG).show();// loadMainUI();break;case GET_INFO_SUCCESS:String serverversion = info.getVersion();String currentversion = getVersion();if (currentversion.equals(serverversion)) {Log.i(TAG, "版本号相同进入主界面");// loadMainUI();} else {Log.i(TAG, "版本号不相同,升级对话框");showUpdateDialog();}break;case DOWNLOAD_SUCCESS:Log.i(TAG, "文件下载成功");// File file = (File) msg.obj;// installApk(file);break;case DOWNLOAD_ERROR:Toast.makeText(getApplicationContext(), "下载数据异常", Toast.LENGTH_LONG).show();// loadMainUI();break;}};};/*** 显示升级提示的对话框*/protected void showUpdateDialog() {// 创建了对话框的构造器AlertDialog.Builder builder = new Builder(this);// 设置对话框的提示内容builder.setIcon(getResources().getDrawable(R.drawable.notification));// 设置升级标题builder.setTitle("升级提示");// 设置升级提示内容builder.setMessage(info.getDescription());// 创建下载进度条pd = new ProgressDialog(SplashActivity.this);// 设置进度条在显示时的提示消息pd.setMessage("正在下载");// 指定显示下载进度条为水平形状pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);// 设置升级按钮builder.setPositiveButton("升级", new OnClickListener() {public void onClick(DialogInterface dialog, int which) {// loadMainUI();}});builder.setNegativeButton("取消", new OnClickListener() {public void onClick(DialogInterface dialog, int which) {// loadMainUI();}});builder.create().show();}@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// 设置为无标题栏requestWindowFeature(Window.FEATURE_NO_TITLE);// 设置为全屏模式getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.activity_splash);rl_splash = (RelativeLayout) findViewById(R.id.rl_splash);tv_splash_version = (TextView) findViewById(R.id.tv_splash_version);tv_splash_version.setText("版本号:" + getVersion());AlphaAnimation aa = new AlphaAnimation(0.3f, 1.0f);aa.setDuration(2000);rl_splash.startAnimation(aa);// 1.连接服务器获取服务器上的配置信息.new Thread(new CheckVersionTask()) {}.start();}/*** 连网检查应用的版本号与服务端上的版本号是否相同* * @author Administrator* */private class CheckVersionTask implements Runnable {public void run() {// 获取Sdcard下的config.xml文件，如果该文件不存在，那么将会自动创建该文件SharedPreferences sp = getSharedPreferences("config", MODE_PRIVATE);// 由sp对象来获取autoupdate所对应的boolean值，如果该键不存在，默认返回trueboolean autoupdate = sp.getBoolean("autoupdate", true);// 自动更新没有开启if (!autoupdate) {try {// 睡眠2秒钟的是为了播放动画Thread.sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}// 睡眠2秒钟播放动画完毕后进入程序主界面// loadMainUI();}startTime = System.currentTimeMillis();Message msg = Message.obtain();try {// 获取服务端的配置信息的连接地址String serverurl = getResources().getString(R.string.serverurl);URL url = new URL(serverurl);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setRequestMethod("GET");// 设置请求方式conn.setConnectTimeout(5000);int code = conn.getResponseCode();// 获取响应码if (code == 200) {// 响应码为200时，表示与服务端连接成功InputStream is = conn.getInputStream();info = UpdateInfoParser.getUpdateInfo(is);endTime = System.currentTimeMillis();long resulttime = endTime - startTime;if (resulttime < 2000) {try {Thread.sleep(2000 - resulttime);} catch (InterruptedException e) {e.printStackTrace();}}msg.what = GET_INFO_SUCCESS;handler.sendMessage(msg);} else {// 服务器状态错误.msg.what = SERVER_ERROR;handler.sendMessage(msg);endTime = System.currentTimeMillis();long resulttime = endTime - startTime;if (resulttime < 2000) {try {Thread.sleep(2000 - resulttime);} catch (InterruptedException e) {e.printStackTrace();}}}} catch (MalformedURLException e) {e.printStackTrace();msg.what = SERVER_URL_ERROR;handler.sendMessage(msg);} catch (ProtocolException e) {msg.what = PROTOCOL_ERROR;handler.sendMessage(msg);e.printStackTrace();} catch (IOException e) {msg.what = IO_ERROR;handler.sendMessage(msg);e.printStackTrace();} catch (XmlPullParserException e) {msg.what = XML_PARSE_ERROR;handler.sendMessage(msg);e.printStackTrace();}}}/*** <pre>* 获取当前应用程序的版本号。 * 版本号存在于我们的APK中对应的清单文件中（直接解压APK后，即可看到对应的清单文件），* 版本号是manifest节点中的android:versionName="1.0" * 当一个应用程序被装到手机后 ，该apk拷贝到手机的data/app目录下（也就是系统中），* 如图6。所以想得到版本号，我们需要拿到与系统相关的服务，就可以得到apk中的信息了* * </pre>* * @return*/private String getVersion() {// 得到系统的包管理器。已经得到了apk的面向对象的包装PackageManager pm = this.getPackageManager();try {// 参数一：当前应用程序的包名 参数二：可选的附加消息，这里我们用不到 ，可以定义为0PackageInfo info = pm.getPackageInfo(getPackageName(), 0);// 返回当前应用程序的版本号return info.versionName;} catch (Exception e) {// 包名未找到的异常，理论上， 该异常不可能会发生e.printStackTrace();return "";}}
}

清单 02. UpdateInfo.java

package com.coderdream.mobilesafe.domain;public class UpdateInfo {private String version;private String description;private String apkurl;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 getApkurl() {return apkurl;}public void setApkurl(String apkurl) {this.apkurl = apkurl;}
}

清单 03. UpdateInfoParser.java

package com.coderdream.mobilesafe.engine;import java.io.IOException;
import java.io.InputStream;import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;import android.util.Xml;import com.coderdream.mobilesafe.domain.UpdateInfo;/*** * 解析XML数据* */
public class UpdateInfoParser {/*** @param is*            xml文件的输入流* @return updateinfo的对象* @throws XmlPullParserException* @throws IOException*/public static UpdateInfo getUpdateInfo(InputStream is) throws XmlPullParserException, IOException {// 获得一个Pull解析的实例XmlPullParser parser = Xml.newPullParser();// 将要解析的文件流传入parser.setInput(is, "UTF-8");// 创建UpdateInfo实例，用于存放解析得到的xml中的数据，最终将该对象返回UpdateInfo info = new UpdateInfo();// 获取当前触发的事件类型int type = parser.getEventType();// 使用while循环，如果获得的事件码是文档结束的话，那么就结束解析while (type != XmlPullParser.END_DOCUMENT) {if (type == XmlPullParser.START_TAG) {// 开始元素if ("version".equals(parser.getName())) {// 判断当前元素是否是读者需要检索的元素，下同// 因为内容也相当于一个节点，所以获取内容时需要调用parser对象的nextText()方法才可以得到内容String version = parser.nextText();info.setVersion(version);} else if ("description".equals(parser.getName())) {String description = parser.nextText();info.setDescription(description);} else if ("apkurl".equals(parser.getName())) {String apkurl = parser.nextText();info.setApkurl(apkurl);}}type = parser.next();}return info;}
}

清单 03. config.xml

<?xml version="1.0" encoding="utf-8"?>
<resources><string name="serverurl">http://192.168.0.101:8080/info.xml</string></resources>

运行结果

工程源代码

地址：http://download.csdn.net/detail/xuxiheng/8147099