Android security guard (02) and android security guard

Android security guard (02) and android security guard
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Project Structure

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; I Mport 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. anima Tion. 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_SU CCESS = 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; p Rivate 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 parsing error", Toast. LENGTH_LONG ). show (); // loadMainUI (); break; case IO_ERROR: Toast. makeText (getApplicationContext (), "I/O error", Toast. LENGTH_LONG ). show ();/ /LoadMainUI (); break; case PROTOCOL_ERROR: Toast. makeText (getApplicationContext (), "protocol not supported", Toast. LENGTH_LONG ). show (); // loadMainUI (); break; case SERVER_URL_ERROR: Toast. makeText (getApplicationContext (), "the server path is incorrect", Toast. LENGTH_LONG ). show (); // loadMainUI (); break; case SERVER_ERROR: Toast. makeText (getApplicationContext (), "Internal Server exception", Toast. LENGTH_LONG ). show (); // loadMainUI (); break; case GET_INFO_SUCCESS: S Tring serverversion = info. getVersion (); String currentversion = getVersion (); if (currentversion. equals (serverversion) {Log. I (TAG, "Enter the main interface with the same version number"); // loadMainUI ();} else {Log. I (TAG, "upgrade dialog box"); showUpdateDialog ();} break; case DOWNLOAD_SUCCESS: Log. I (TAG, "File downloaded successfully"); // file File = (File) msg. obj; // installApk (file); break; case DOWNLOAD_ERROR: Toast. makeText (getApplicationContext (), "data download exception", Toast. LEN GTH_LONG ). show (); // loadMainUI (); break ;};};/*** display the upgrade prompt dialog box */protected void showUpdateDialog () {// create the constructor AlertDialog of the dialog box. builder builder = new Builder (this); // set the prompt content builder in the dialog box. setIcon (getResources (). getDrawable (R. drawable. notification); // set the upgrade title builder. setTitle ("upgrade prompt"); // set the upgrade prompt content builder. setMessage (info. getDescription (); // create a download progress bar pd = new ProgressDialog (SplashActivity. this); // set the prompt message when the progress bar is displayed. Pd. setMessage ("downloading"); // specifies that the download progress bar is in the horizontal shape pd. setProgressStyle (ProgressDialog. STYLE_HORIZONTAL); // set the Upgrade button builder. setPositiveButton ("Upgrade", new OnClickListener () {public void onClick (DialogInterface dialog, int which) {// loadMainUI () ;}}); builder. setNegativeButton ("cancel", new OnClickListener () {public void onClick (DialogInterface dialog, int which) {// loadMainUI () ;}}); builder. create (). show () ;}@ Overridepub Lic void onCreate (Bundle savedInstanceState) {super. onCreate (savedInstanceState); // set to requestWindowFeature (Window. FEATURE_NO_TITLE); // set it to full screen mode 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 ("version:" + getVersion (); AlphaAnimation aa = new AlphaAnimation (0.3f, 1.0f); aa. setDuration (2000); rl_splash.startAnimation (aa); // 1. connect to the server to obtain the configuration information on the server. new Thread (new CheckVersionTask ()){}. start ();}/*** check whether the application version is the same as the version number on the server. ** @ author Administrator **/private class CheckVersionTask implements Runnable {public void run () {// obtain the config. xml files, such If the file does not exist, the file SharedPreferences sp = getSharedPreferences ("config", MODE_PRIVATE) will be automatically created; // The boolean value corresponding to autoupdate will be obtained by the sp object, if this key does not exist, trueboolean autoupdate = sp is returned by default. getBoolean ("autoupdate", true); // if (! Autoupdate) {try {// sleeping for 2 seconds is to play the animation Thread. sleep (2000);} catch (InterruptedException e) {e. printStackTrace ();} // After the animation is played for 2 seconds, enter the main interface of the program // loadMainUI ();} startTime = System. currentTimeMillis (); Message msg = Message. obtain (); try {// connection address for obtaining server configuration information String serverurl = getResources (). getString (R. string. serverurl); URL url = new URL (serverurl); HttpURLConnection conn = (HttpURLConnection) url. openConnection (); co Nn. setRequestMethod ("GET"); // sets the Request Method conn. setConnectTimeout (5000); int code = conn. getResponseCode (); // get the response code if (code = 200) {// when the response code is 200, it indicates that the connection to the server is successful 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 {// server status error. 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> * gets the version number of the current application. * The version number exists in the corresponding configuration file in our APK (after you extract the APK directly, you can see the corresponding configuration file). * The version number is android in the manifest node: versionName = "1.0" * When an application is installed on a mobile phone, the apk is copied to the data/app directory of the mobile phone (that is, in the system), * 6. So if you want to get the version number, you need to get the system-related service to get the information in the apk ** </pre> ** @ return */private String getVersion () {// obtain the system Package Manager. You have obtained the object-oriented PackageManager pm = this For apk. getPackageManager (); try {// parameter 1: package name of the current application parameter 2: optional additional message. We cannot use it here. It can be defined as 0 PackageInfo info = pm. getPackageInfo (getPackageName (), 0); // return the current application version number return info. versionName;} catch (Exception e) {// an Exception not found in the package name. Theoretically, this Exception cannot occur. printStackTrace (); return "";}}}Listing 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;}}

Listing 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; /***** Parse XML data **/public class UpdateInfoParser {/***** @ param is * input stream of the xml file * @ return updateinfo object * @ throws XmlPullParserException * @ throws IOEx Ception */public static UpdateInfo getUpdateInfo (InputStream is) throws XmlPullParserException, IOException {// get a Pull-parsed instance XmlPullParser parser = Xml. newPullParser (); // the file to be parsed is passed into parser. setInput (is, "UTF-8"); // create an UpdateInfo instance to store the data in the parsed xml, and finally return the object UpdateInfo info = new UpdateInfo (); // obtain the currently triggered event type int type = parser. getEventType (); // use the while loop. If the obtained Event code is the end of the document, parse the while (type! = XmlPullParser. END_DOCUMENT) {if (type = XmlPullParser. START_TAG) {// start element if ("version ". equals (parser. getName () {// determine whether the current element is the element that the reader needs to retrieve. The same below // because the content is also equivalent to a node, call the nextText () of the parser object to obtain the content () method to obtain the content 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 ;}}

Listing 03. config. xml

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

Running result

Engineering source code

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