Question

我需要在

时识别广播事件

外出通话已开始，
接收方收到的外出电话和
外出通话挂断

我可以接收来电事件，但不能接听电话事件。

这是我的代码，请找出我的问题并给出解决方案。

先谢谢

@Override
public void onReceive(Context context, Intent intent) {

    // We listen to two intents. The new outgoing call only tells us of an
    // outgoing call. We use it to get the number.
    if (intent.getAction()
            .equals("android.intent.action.NEW_OUTGOING_CALL")) {
        savedNumber = intent.getExtras()
                .getString("android.intent.extra.PHONE_NUMBER");
    } else {
        String stateStr = intent.getExtras()
                .getString(TelephonyManager.EXTRA_STATE);
        String number = intent.getExtras()
                .getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
        int state = 0;
        if (stateStr.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
            state = TelephonyManager.CALL_STATE_IDLE;
        } else if (stateStr.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
            state = TelephonyManager.CALL_STATE_OFFHOOK;
        } else if (stateStr.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
            state = TelephonyManager.CALL_STATE_RINGING;
        }

        onCallStateChanged(context, state, number);
    }
}

Answer 1

以下代码可帮助您获取onCreate

中的网络工作状态代码

 StateListener phoneStateListener = new StateListener();
 TelephonyManager telephonyManager =(TelephonyManager)getSystemService(TELEPHONY_SERVICE);
 telephonyManager.listen(phoneStateListener,PhoneStateListener.LISTEN_CALL_STATE);

为手机的收听状态创建一个内部类。

class StateListener extends PhoneStateListener {
@Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
switch (state) {
    case TelephonyManager.CALL_STATE_RINGING:
        break;
    case TelephonyManager.CALL_STATE_OFFHOOK:
        System.out.println("call Activity off hook");
        LockScreenActivity.this.finish();
        break;
    case TelephonyManager.CALL_STATE_IDLE:
        break;
}
}
};

在清单文件中设置权限

  <uses-permission android:name="android.permission.READ_PHONE_STATE" />

Answer 2

1）外出通话已经开始，

您可以识别是否在未使用以下代码

的情况下启动拨出电话

        case TelephonyManager.CALL_STATE_RINGING:
            isIncoming = true;
            callStartTime = new Date();
            savedNumber = number;
            onIncomingCallReceived(context, number, callStartTime);
            break;
        case TelephonyManager.CALL_STATE_OFFHOOK:
            //Transition of ringing->offhook are pickups of incoming calls.  Nothing done on them
            if (lastState != TelephonyManager.CALL_STATE_RINGING) {
                isIncoming = false;
                callStartTime = new Date();
                startRecording(context,"_Out_",number);
                onOutgoingCallStarted(context, savedNumber, callStartTime);
            }
            else
            {
                isIncoming = true;
                callStartTime = new Date();
                startRecording(context,"_In_",savedNumber);
                onIncomingCallAnswered(context, number, callStartTime);
            }

            break;

2）接收端收到的外出呼叫和 3）外出通话挂断

然而你无法识别通过使用任何直接api被其他端拾取的呼叫，因为android没有提供任何直接api来检测它。

如何识别电话状态是否收到外出呼叫

2 个答案: