Android PhoneStateListener 返回过去的通话

Question

我使用 PhoneStateListener 来查明电话何时处于 Activity 通话中以及通话何时结束并记录它是在来电还是去电中。当我安装监听器时，它在第一次调用时按预期工作。之后，尽管它仍然有效，但它会返回第一次调用和第二次调用的信息，在第 3 次调用时，它会返回 3 次调用的信息等。如何只获取 Activity 通话的信息​​？下面的代码，任何帮助表示赞赏

@Override
public void onReceive(Context context, Intent intent) {
    mContext = context;
    mIntent = intent;
    mlocManager= (LocationManager)mContext.getSystemService(Context.LOCATION_SERVICE);
    mlocListener = new MyLocationListener();

    TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
    int events = PhoneStateListener.LISTEN_CALL_STATE;
    tm.listen(phoneStateListener, events);
}


private final PhoneStateListener phoneStateListener = new PhoneStateListener() {
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        Log.e("GO", incomingNumber);



        String number = null;
        String callState = "UNKNOWN";
        switch (state) {
        case TelephonyManager.CALL_STATE_IDLE:
            callState = "IDLE";
            break;
        case TelephonyManager.CALL_STATE_RINGING:
            // -- check international call or not.
            callState = "INCOMING";
            number = incomingNumber;

            break;
        case TelephonyManager.CALL_STATE_OFFHOOK:
            number = mIntent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);

            callState = "OUTGOING";

            break;
        }




        super.onCallStateChanged(state, incomingNumber);
    }
};

Answer 1

回答我自己的问题。此代码为每个调用创建多个监听器。通话以以下行结束后，我必须停止听众

tm.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE);