以下是在不同场景中经历的状态：
1）接听来电
CALL_STATE_RINGING => CALL_STATE_OFFHOOK (After Answering call) => CALL_STATE_IDLE (After End call)
2）拒绝/不接听（错过）接听电话
CALL_STATE_RINGING => CALL_STATE_IDLE (After End call)
3）拨打电话
CALL_STATE_OFFHOOK (After dialing) => CALL_STATE_IDLE (After End call)
在Android中“拨打”呼叫状态变为“活动”时如何捕捉情况？