iPhone App kill my iphone music player?

As soon as I open app it kills my music player. I dont want user to feel such experience. Sometime user don't want to stop their music player while app browsing. For that purpose I will provide explicitly a button in my app which stop music player.

So what function I need to call and where in my App which doesn't stop music player as soon as I launch 开发者_运维知识库app without single second delay or any interruption ?

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You need to play with AVAudioSession. This Link may help you to achieve that.