title: how to hide photos from gallery and store it in my app
body: <p>I am developing an android application where it will select some photos from the gallery and hide them,</p>
  
  <p>i am able to select particular picture from gallery and store it in my app and delete it from gallery,but a person can see those pictures if he opens my app folder in sdcard ,so how do i store them such that even if a person checks my sdcard then he should not be able to detect those pictures ?</p>