Android version update notification bar update download install _android

Android application check version update, download in the notification bar, update download progress, download complete automatic installation, the effect is as follows:

• Check the current version number

The Versioncode in the Androidmanifest file identifies the version, the Apk,versioncode of a new version of the server is larger than the current version, and the following code is used to get the Versioncode value

PackageInfo PackageInfo = Context.getpackagemanager (). Getpackageinfo (Context.getpackagename (), 0);

Compare with current Versioncode and server side, if less than, make version update

• Download APK files

/**
* Download apk
* 
* @param apkuri
*/private void downloadnewapk (String Apkuri, string version) {
Manager = (Notificationmanager) context
. Getsystemservice, (context. Notification_service));
notify = new Notification ();
Notify.icon = R.drawable.ic_launcher;
The notification bar displays the layout files used
Notify.contentview = new Remoteviews (Context.getpackagename (),
R.layout.view_notify_ Item);
Manager.notify (notify);
Set up the downloaded APK file
fileinstall = Fileoperate.mkdirsdcardfile ("DownLoad", Apk_name
+ version + ". APK");
Downloadschedule (Apkuri, Completehandler, context,
fileinstall);
}

Fileoperate is the file tool class that you wrote

The layout shown by the notification bar, View_notify_item.xml

<?xml version= "1.0" encoding= "Utf-8"?> <relativelayout xmlns:android= "http://schemas.android.com/apk/res/" Android "Android:layout_width=" Match_parent "android:layout_height=" match_parent "android:layout_marginleft=" 10DP "Android:background=" #00000000 "android:padding=" 5DP "> <imageview android:id=" @+id/notify_icon_iv "Android: Layout_width= "25DP" android:layout_height= "25DP" android:src= "@drawable/ic_launcher"/> <textview android:id= "@+id/notify_updata_values_tv" android:layout_width= "wrap_content" android:layout_height= "Wrap_content" Android: Layout_centerhorizontal= "true" android:layout_marginbottom= "6DP" android:layout_marginleft= "15DP" Android:layout_
margintop= "5DP" android:layout_torightof= "@id/notify_icon_iv" android:gravity= "center_vertical" android:text= "0%" Android:textcolor= "@color/white" android:textsize= "12sp"/> <progressbar android:id= "@+id/notify_updata_ Progress "style=" @android: Style/widget.progressbar.horizontal "android:layout_width=" Fill_parEnt "android:layout_height=" wrap_content "android:layout_below=" @id/notify_icon_iv "android:layout_margintop=" 4DP "android:max="/> </RelativeLayout>/** * Connect the network, download a file, and return the progress * * @param URI * @param handler * @param conte XT * @param file */public static void Downloadschedule (Final String URI, final Handler Handler, context, final Fil
D () {@Override public void run () {super.run (), try {URL url = new URL (URI);
HttpURLConnection conn = (httpurlconnection) URL. OpenConnection ();
Conn.setdoinput (TRUE);
Conn.connect ();
InputStream in = Conn.getinputstream ();
2865412 Long length = Conn.getcontentlength ();
1k byte[per read] buffer = new Byte[perlength];
int len =-1;
FileOutputStream out = new FileOutputStream (file);
int temp = 0; while (len = in.read (buffer))!=-1) {//write file Out.write (buffer, 0, Len);//Current Progress int schedule = (int) (File.length () *)/length);  Notify update progress (10,7,4 is not required to update progress every time) if (temp!= schedule && (Schedule% = 0 | | Schedule% 4 = 0 | | Schedule% 7
= = 0) {//Ensure that the same data is only issued once temp = schedule; Handler.sendemptymessage (schedule);}
Out.flush ();
Out.close ();
In.close ();
catch (IOException e) {e.printstacktrace ();}}
}.start (); }

Handler update according to download progress

• Update Notification bar progress bar

/**
* Update Notification Bar *
/private Handler Completehandler = new Handler () {public
void Handlemessage ( Android.os.Message msg) {
//update Notification bar
if (Msg.what <) {
Notify.contentView.setTextViewText (
R.ID.NOTIFY_UPDATA_VALUES_TV, Msg.what + "%");
Notify.contentView.setProgressBar (r.id.notify_updata_progress,
msg.what, false);
Manager.notify (MB, notify);
else {
Notify.contentView.setTextViewText (
r.id.notify_updata_values_tv, "Download Complete");
Notify.contentView.setProgressBar (r.id.notify_updata_progress,
msg.what, false);/clear Notification bar
Manager.cancel (m);
INSTALLAPK (Fileinstall);
}
;

Call the system installation when the download is complete.

• Install APK

/**
* Installation apk * * 
@param file
*/private void installapk (file file) {
Intent Intent = new Intent ();
Intent.addflags (intent.flag_activity_new_task);
Intent.setaction (Android.content.Intent.ACTION_VIEW);
Intent.setdataandtype (uri.fromfile (file),
"application/vnd.android.package-archive");
Context.startactivity (intent);
}

Setup is done.