How to take backup of installed applications (.apk) to sdcard? [closed]

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making th开发者_如何学JAVAis question more broadly applicable, visit the help center. Closed 11 years ago.

I like to take all 3rd party application's backup to the SD Card. I tried out to copy .apk file from /data folder but no such permission to do so. Please let me know is there any way to grant permissions or another way to take application backup.

Thanks