title: Notification pop up in home screen like viber in android
body: <p>I want show Viber like home screen pop up when Push notification received by my application, I google it but did not get the answer. My requirement is like this <a href="https://stackoverflow.com/questions/22174411/how-to-implement-pop-up-box-in-android-similar-to-viber-when-a-message-is-rec">How to implement &#39;pop up box&#39; in Android similar to Viber (when a message is received)</a></p>