android 通话的log分析,Android-9种通话状态(精确)

一.介绍

在应用层监听通话状态只有三种，从TelephonyManager.java中注释可知这三种状态含义如下：

CALL_STATE_IDLE 空闲态(没有通话活动)

CALL_STATE_RINGING 包括响铃、第三方来电等待

CALL_STATE_OFFHOOK 包括dialing拨号中、active接通、hold挂起等

由上可知，active接通状态没有单独给出，所以我们无法得知电话是否接通了，

因此需要其它手段来获取更多的精确通话状态，遍查网络资料，一般有两种方法！

public class TelephonyManager {

/** Device call state: No activity. */

public static final int CALL_STATE_IDLE = 0;

/** Device call state: Ringing. A new call arrived and is

* ringing or waiting. In the latter case, another call is

* already active. */

public static final int CALL_STATE_RINGING = 1;

/** Device call state: Off-hook. At least one call exists

* that is dialing, active, or on hold, and no calls are ringing

* or waiting. */

public static final int CALL_STATE_OFFHOOK = 2;