Full Screen Notification : <p>I want to make App Like Uber But I Don't know how to make full screen notification,When Driver receiver new Request a new Screen Pop up   that will show  timer ,accept , reject button. even when driver app is in background ,
I am newbiew 
here is a video link what i want to do
<a href="https://drive.google.com/file/d/1dhqSDexUKYY---ARHjWcg3bM0tYWRmLo/view?usp=sharing" rel="nofollow noreferrer">https://drive.google.com/file/d/1dhqSDexUKYY---ARHjWcg3bM0tYWRmLo/view?usp=sharing</a></p>

<p>Sorry for English</p>

<p>I have tried to use heads up notification with full screen but it didn't work well ;
I have tried to make background service to but i am not good in it so that also did not go well;
I am working on Oreo ;</p>
