I am implementing Video Calling functionality for that i am calling form one other app and passing parameter to my app
when i am opening my App's
1)Incoming Call Page (has Accept/Reject Button) => For first time Accept/Reject Button is working perfect.
a) when i am clicking Accept Button
i am Navigating to OnGoingCallPage and Removing IncomingCallPage from Stack.
after disconnecting call
when i am calling again i am opening IncomingCallPage and (Accept/Reject button )
my problem is Accept/Reject Button is not clickable for second time.

When I am Removing (Killing) my App from RecentTask List then Accept/Reject button clicked every time .
What i am doing mistake.

Please Help,