title: Force angle of photo taken ANDROID
body: <p>I want take photo and try to do it on the inclination of 180 degrees +/- 5 degrees, in other degrees camera should be blocked.
  In brief I want force take photo horizontally to floor (or close to it).</p>
  
  <p>What is the easiest way? I should use gyroscope? The problem is that angle must be checked all the time that degree is good.</p>