title: How to ask Permission in OPPO again if user deny permision in Oppo lollipop version?
body: <p>I am facing problem in Oppo mobile - Lollipop version.
  I need write contact permission in my app.
  but in oppo lollipop it ask oppo's own security permission.
  If I deny that permission than application crashed on open that screen.
  So I want to know how to check this permission in Oppo Lollipop version.
  In another device and All OS it works fine But I am facing problem in OPPO Lollipop version.</p>
  
  <p>This thing happen if we turn on the security permission On if we make it off than it will work.
  I want to ask permission programmatically only not from going in setting</p>