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
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