Android: How to Install Apk like Android Market does
===

I am new to android. I could install an APK pro-grammatically which is present in the SD card ..It will prompt the user to install the APK. But i need to install without prompting, as we do in Android Market (Google Play), where we click INSTALL and automatically the app gets installed without prompting.

Note:* I found some links on stackoverflow, but all those mechanism will prompt the user.

How to do this? Plz help