在用户按下呼叫按钮和用户开始听到呼叫声音的操作之间获取事件

Question

我在 TelephonyManager 中发现了 3 个事件，但如何测量 phone 连接订阅者所需的时间？可能吗？

/** 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;

Answer 1

不，这不可能。没有呼叫已接通或已接电话的事件广播。

在用户按下呼叫按钮和用户开始听到呼叫声音的操作之间获取事件

Getting event between actions user press call button and when user start hear call sounds

android

telephonymanager