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();	}	@Override	public 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true			boolean 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0			PackageInfo 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

Android项目实战手机安全卫士（02）