如何检测电话何时被接听或被拒绝 [英] How to detect when phone is answered or rejected

问题描述

我设法在电话响起时准备了一项活动.现在我需要知道如何在接电话或拒接电话时取消此活动.我是拨打 EXTRA_STATE_IDLE 还是 EXTRA_STATE_OFFHOOK ?

I managed to prepare an activity when the phone is ringing. Now I need to know how to cancel this activity, when I answer the phone or I reject the call.Do I call EXTRA_STATE_IDLE or EXTRA_STATE_OFFHOOK ?

有什么想法吗?

清单

    <receiver android:name=".IncomingBroadcastReceiver">
        <intent-filter>
            <action android:name="android.intent.action.PHONE_STATE" />
        </intent-filter>
    </receiver>

IncomingBroadcastReceiver java 类

public class IncomingBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
        // If an incoming call arrives
        if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) { //Did my work }

推荐答案

在您的 onReceive:

in your onReceive:

PhoneStateChangeListener pscl = new PhoneStateChangeListener();
TelephonyManager tm = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
tm.listen(pscl, PhoneStateListener.LISTEN_CALL_STATE);

单独的类:

private class PhoneStateChangeListener extends PhoneStateListener {
    public static boolean wasRinging;
    String LOG_TAG = "PhoneListener";
    @Override
    public void onCallStateChanged(int state, String incomingNumber) {
        switch(state){
            case TelephonyManager.CALL_STATE_RINGING:
                 Log.i(LOG_TAG, "RINGING");
                 wasRinging = true;
                 break;
            case TelephonyManager.CALL_STATE_OFFHOOK:
                 Log.i(LOG_TAG, "OFFHOOK");

                 if (!wasRinging) {
                     // Start your new activity
                 } else {
                     // Cancel your old activity
                 }

                 // this should be the last piece of code before the break
                 wasRinging = true;
                 break;
            case TelephonyManager.CALL_STATE_IDLE:
                 Log.i(LOG_TAG, "IDLE");
                 // this should be the last piece of code before the break
                 wasRinging = false;
                 break;
        }
    }
}

您需要做的就是编写一些代码来检查之前的状态是否为振铃".如果当前状态是空闲状态并且前一个状态是振铃，则他们取消呼叫.如果当前状态为摘机，而前一个状态为振铃，则他们接听电话.

All you need to do is write some code to check if the previous state was 'ringing'. If the current state is idle and the previous state was ringing, they cancelled the call. If the current state is offhook and the previous state was ringing, they answered the call.

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