What happens at the system level on an incoming call?
问题 I've downloaded the entire source code for the master branch from https://android.googlesource.com/platform/frameworks/base/+/master, and am trying to decipher the chain of events on an incoming call. I assume that the ACTION_ANSWER intent is started but beyond that don't know what happens before or after. Can anyone help? 回答1: Let's begin by looking at CallNotifier: /** * Phone app module that listens for phone state changes and various other * events from the telephony layer, and triggers