self upgrading own apk via net programmatically on android

Question

We have to port our software to android. One of the main feature of our software should be that the software can download a new version of itself from the net (our own server) and install it's new version too. All this thing should be done programmatically.

I'm new to android, so haven't got any clue how should it be done.

• How to create apk? - solved
• How to sign apk? - solved
• How to download apk? - solved
• How to copy the downloaded file overwriting /data/apk/my.software.name.apk? - unsolved
• How to restart the software by the running version? - unsolved

Answer 1

File file = new File(dir, "App.apk");

Intent intent = new Intent(Intent.ACTION_VIEW);

intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");

startActivity(intent);

I had the same problem and after several attempts, it worked for me this way. Previously i got my new apk from a webservice.