Android项目实战手机安全卫士（02）

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