如何知道的那一刻，当被呼叫的人拿起他的电话 [英] How to know the moment when the called person picks up his phone

问题描述

可能重复：
  <一href="http://stackoverflow.com/questions/2250455/detect-if-an-outgoing-call-has-been-answered">Detect如果传出的电话已经接

如何才能知道的那一刻，当我打电话的人拿起他的电话？

How can I know the moment when the person I call "picks up" his phone?

推荐答案

使用 PhoneStateListener 。当他们'拿起'的电话时，状态更改为 CALL_STATE_OFFHOOK 。

Using PhoneStateListener. When they 'pick up' the phone, the state changes to CALL_STATE_OFFHOOK.

TelephonyManager tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
tm.listen(mPhoneListener, PhoneStateListener.LISTEN_CALL_STATE);

private PhoneStateListener mPhoneListener = new PhoneStateListener() {
    public void onCallStateChanged(int state, String incomingNumber) {
        try {
            switch (state) {
            case TelephonyManager.CALL_STATE_RINGING:
                // do something...
                break;

            case TelephonyManager.CALL_STATE_OFFHOOK:
                // this state is the one you're looking for
                break;

            case TelephonyManager.CALL_STATE_IDLE:
                // do something...
                break;
            default:
                Log.d(TAG, "Unknown phone state=" + state);
            }
        } catch (RemoteException e) {}
    } 
};

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