Android apps are automatically updated and installed

Monitor whether upgrade is required:

PackageManager packageManager = MainActivity.getInstance().getPackageManager();PackageInfo packInfo;try{    packInfo = packageManager.getPackageInfo(MainActivity.getInstance().getPackageName(), 0);    String version = packInfo.versionName;    String serverVersion = NetSend.getInstance().getVersion();    ProjectMacro.apkVersion = version;    if (!serverVersion.equals(version))    {        showUpdataDialog();    }}catch (NameNotFoundException e){   e.printStackTrace();}

Obtain the server version:

public String getVersion(){    String result = null;    URL url = null;    HttpURLConnection connection = null;    InputStreamReader in = null;    try    {       url = new URL(ProjectMacro.URL_VER_COM);       connection = (HttpURLConnection)url.openConnection();       in = new InputStreamReader(connection.getInputStream());       BufferedReader bufferedReader = new BufferedReader(in);       StringBuffer strBuffer = new StringBuffer();       String line = null;       while ((line = bufferedReader.readLine()) != null)       {          strBuffer.append(line);       }       result = strBuffer.toString().trim();       }       catch (Exception e)       {           e.printStackTrace();       }       finally       {          if (connection != null)          {              connection.disconnect();          }          if (in != null)          {              try              {                  in.close();              }              catch (IOException e)              {                  e.printStackTrace();              }          }            }        return result;    }

Download process and automatic installation [divided into: Existing sdcard and existing mobile phone memory]

Private icationicationmanager micationicationmanager; private notification mnotification; Private Static final int handler_message_start_downloading = 0; Private Static final int completion = 1; Private Static final int completion = 2; Private Static final int handler_message_install_complete = 3; private Static final int current_network_error = 10000; private Downloadthread thread = new downloadthread (); Private Boolean isstopdownload; /*** downloadbinder defines some practical methods ** @ author user **/public class downloadthread extends thread {@ override public void run () {super. run (); startdownload () ;}} private handler mupdatehandler = new handler () {public void handlemessage (Message MSG) {Switch (MSG. what) {Case handler_message_start_downloading: setupnot Ification (); break; Case handler_message_is_downloading: setcurrentprogressinfo (MSG. arg1, MSG. arg2); break; Case handler_message_download_complete: setupoknotification (); thread. interrupt (); toast. maketext (mainactivity. getinstance (), "Download complete! ", Toast. length_short). Show (); break; Case handler_message_install_complete: break; Case current_network_error: If (thread! = NULL) {thread. interrupt () ;}showtoast ("network exception", 2); break; default: Break ;}};}; /*** set the current progress ** @ Param currentprogress * @ Param totalsize */private void setcurrentprogressinfo (INT currentprogress, int totalsize) {// update the progress remoteviews contentview = mnotification. contentview; contentview. settextviewtext (R. id. download_file_tempsize, "" + currentprogress + "kb"); contentview. settextviewtext (R. Id. download_file_size, "" + totalsize + "kb"); contentview. setprogressbar (R. id. download_file_progressbar, 100, (INT) (currentprogress * 100/totalsize), false); micationicationmanager. notify (R. string. app_name, mnotification);}/*** Set Download notification */private void setupnotification () {mnotificationmanager = (icationicationmanager) mainactivity. getinstance (). getsystemservice (context. notification_service); mnot Ification = new notification (R. drawable. ic_launcher, "downloading", system. currenttimemillis (); mnotification. flags = notification. flag_ongoing_event; remoteviews Rv = new remoteviews (mainactivity. getinstance (). getpackagename (), R. layout. update_download_apk_progressbar); mnotification. contentview = RV; intent = new intent (); intent. addflags (intent. flag_activity_new_task); pendingintent contentint Ent = pendingintent. getactivity (mainactivity. getinstance (), R. string. app_name, intent, pendingintent. flag_update_current); mnotification. contentintent = contentintent; micationicationmanager. notify (R. string. app_name, mnotification);}/*** download completed */private void setupoknotification () {mnotification. flags = notification. flag_auto_cancel; mnotification. contentview = NULL; file = NULL; If (Environ Ment. getexternalstoragestate (). equals (environment. media_mounted) {// sdcard exists. Upgrade APK to file = new file (environment. getexternalstoragedirectory (), "miq.apk");} else {// sdcard does not exist. Upgrade APK to local storage file = new file (getcachedir (). getabsolutepath () + file. separator + "Download", "miq.apk");} intent = new intent (); intent. setaction (Android. content. intent. action_view); intent. addcategory (inte NT. category_default); intent. setcomponent (New componentname ("com. android. packageinstaller "," com. android. packageinstaller. packageinstalleractivity "); intent. setflags (intent. flag_activity_new_task); intent. setdataandtype (URI. fromfile (file), "application/vnd. android. package-Archive "); startactivity (intent); pendingintent contentintent = pendingintent. getactivity (mainactivity. getinstance (), R. string. App_name, intent, pendingintent. flag_update_current); mnotification. contentintent = contentintent; mnotification. setlatesteventinfo (mainactivity. getinstance (), "download completed", "file downloaded", contentintent); micationicationmanager. notify (R. string. app_name, mnotification);}/*** download module */private void startdownload () {message MSG = mupdatehandler. obtainmessage (); MSG. what = handler_message_start_downloading; MS G. arg1 = 0; mupdatehandler. sendmessage (MSG); httpclient client = new defaulthttpclient (); httpparams = client. getparams (); httpconnectionparams. setconnectiontimeout (httpparams, 1000*60); httpconnectionparams. setsotimeout (httpparams, 1000*60); connmanagerparams. setTimeout (httpparams, 1000*60); httpget get = new httpget (projectmacro. url_down_com); httpresponse response; try {respon Se = client.exe cute (get); httpentity entity = response. getentity (); long length = entity. getcontentlength (); log. I ("downloadnewreceiver", "length is" + length); inputstream is = entity. getcontent (); fileoutputstream = NULL; file = NULL; If (is! = NULL) {If (environment. getexternalstoragestate (). equals (environment. media_mounted) {// The sdcard has file = new file (environment. getexternalstoragedirectory (), "miq.apk");} else {// sdcard does not exist string apkpath = getcachedir (). getabsolutepath () + file. separator + "Download"; string apkname = "miq.apk"; file = new file (apkpath, apkname); If (! File. getparentfile (). exists () {file. getparentfile (). mkdirs () ;}} fileoutputstream = new fileoutputstream (File); byte [] Buf = new byte [2048]; int CH =-1; int COUNT = 0; long starttime = system. currenttimemillis (); While (CH = is. read (BUF ))! =-1) {If (! Netutil. checknet (mainactivity. getinstance () {MSG. what = current_network_error; mupdatehandler. sendmessage (MSG); return;} Long endtime = system. currenttimemillis (); fileoutputstream. write (BUF, 0, CH); count + = CH; // ------ download completion: Send a message notification to handler to update the progress if (isstopdownload! = True) {If (endtime-starttime> 1000) {// one-second update MSG = mupdatehandler. obtainmessage (); MSG. what = handler_message_is_downloading; MSG. arg1 = (count/1024); MSG. arg2 = (INT) (length/1024); mupdatehandler. sendmessage (MSG); starttime = endtime;} isstopdownload = false;} string permission = "755"; // The downloaded folder must have the RX permission (the prerequisite for folder access) string filescom = "chmod" + permission + "" + file. getparentfil E (). getabsolutepath (); // The downloaded object APK must have the X permission, that is, the executable permission, for Android applications, to install string apkcomm = "chmod" + permission + "" + file. getabsolutepath (); // string apkcomm = "chmod-R" + permission + "" + apkpath + "/" // + apkname; // The-r option runtime = Runtime is not supported. getruntime (); runtime.exe C (filescom); runtime.exe C (apkcomm);} fileoutputstream. flush (); If (fileoutputstream! = NULL) {fileoutputstream. Close () ;}// ------ the handler if (isstopdownload! = True) {MSG = mupdatehandler. obtainmessage (); MSG. what = handler_message_download_complete; mupdatehandler. sendmessage (MSG); isstopdownload = false;} Try {thread. sleep (10);} catch (interruptedexception e) {e. printstacktrace () ;}} catch (clientprotocolexception e) {e. printstacktrace ();} catch (ioexception e) {e. printstacktrace () ;}} protected void showupdatadialog () {alertdialog. builder builer = new Builder (mainactivity. getinstance (); builer. settitle ("version upgrade"); builer. setmessage ("the latest version is detected. Please update it in time"); builer. setpositivebutton ("OK", new onclicklistener () {public void onclick (dialoginterface dialog, int which) {thread. start () ;}}); builer. setnegativebutton ("cancel", new onclicklistener () {public void onclick (dialoginterface dialog, int which) {}}); builer. create (); builer. show ();}

Update_download_apk_progressbar.xml

<? XML version = "1.0" encoding = "UTF-8"?> <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: Id = "@ + ID/download_file_progress_layout" Android: layout_width = "match_parent" Android: layout_height = "match_parent" Android: focusable = "true" Android: focusableintouchmode = "true" Android: Orientation = "horizontal"> <imageview Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_gravity = "CEN Ter_vertical "Android: Background =" @ drawable/ic_launcher "/> <linearlayout Android: layout_width =" wrap_content "Android: layout_height =" wrap_content "Android: orientation = "vertical"> <relativelayout Android: layout_width = "wrap_content" Android: layout_height = "wrap_content"> <textview Android: Id = "@ + ID/text" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: padding = "3dp" Ndroid: text = "download new version" Android: textcolor = "# ffffff" Android: textsize = "16sp"/> <linearlayout Android: id = "@ + ID/downloud_progress_layout" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_torightof = "@ + ID/text"> <textview Android: id = "@ + ID/download_file_tempsize" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: padding = "3dp" Android: T EXT = "0 kb" Android: textcolor = "# ffffff"/> <textview Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: layout_marginleft = "3dp" Android: layout_marginright = "3dp" Android: text = "/" Android: textcolor = "# ffffff"/> <textview Android: id = "@ + ID/download_file_size" Android: layout_width = "wrap_content" Android: layout_height = "wrap_content" Android: text = "0 kb" Android: textcolor = "# FF FFFF "/> </linearlayout> <imagebutton Android: Id =" @ + ID/stop_download "Android: layout_width =" wrap_content "Android: layout_height =" wrap_content "Android: authorization = "true" Android: layout_marginright = "120dp" Android: Background = "@ drawable/stop_download_btn" Android: visibility = "gone"/> </relativelayout> <progressbar Android: id = "@ + ID/download_file_progressbar" style = "? Android: ATTR/progressbarstylehorizontal "Android: layout_width =" 240dp "Android: layout_height =" wrap_content "Android: layout_gravity =" center "Android: padding =" 3dp "Android: progressdrawable = "@ drawable/download_progressbar"/> </linearlayout>

Add permission:

    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.WRITE_OWNER_DATA" />