问题
I've implemented SIP feature in my app. I am currently working on Galaxy Tab SM-T580 with Nougat. Problem started at the moment when I've decided to upgrade Android (from 6.0 to mentioned 7.0) - then my SIP client stopped working.
When I try to open my sipManager implementation with open(sipProfile, pi, null) method
android.net.sip.SipException: SipService is dead and is restarting...
at android.net.sip.SipManager.checkSipServiceConnection(SipManager.java:183)
is thrown.
Debugging code I can see that SipManager from android.net.sip doesn't bind Context.SIP_SERVICE service (SipManager:175). Code and configs I am using are copy paste from Android Docs - Android Sip Guide
来源：https://stackoverflow.com/questions/51821480/binder-cannot-bind-context-sip-service-sip-client-not-working-on-nougat