Android - 如何检测用户是否拒绝了来电？

Question

I'm making an Android app with incoming calls. Is there any way in my app, to know if user rejected any incoming call before answering it?

Answer 1

First, you have to add a permission in manifest file.

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

Then you have to register a broadcast receiver in the manifest file.

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

Then write in your broadcast receiver's onReceive method:

public void onReceive(Context context, Intent intent) {
    String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE); 
    if(state.equals(TelephonyManager.EXTRA_STATE_RINGING)){
        //If the phone is **Ringing**
    }else if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK){
        //If the call is **Received**
    }else if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)){
        //If the call is **Dropped** or **Rejected**
    }
}

If the state changes from TelephonyManager.EXTRA_STATE_RINGING to TelephonyManager.EXTRA_STATE_IDLE , then it will be a missed call.

Like this you have to check the conditions.

Please put a log in those conditions. Then see the logs. I think you will get your answer.

Answer 2

It's been a while since you asked, but I think it might be useful for future reference for others.

If you extract data from Android's calllog (eg to XML or in your case to a variable in your app) you have two fields of interest:

1) numbertype eg 1 for Incoming, 2 for Outgoing, 3 for missed

2) duration (in seconds)

Rejected number is (as you correctly mentioned) treated as numbertype=1. However if you combine numbertype=1 AND duration=0 (since any call answered will have duration>0) then this hopefully solves your problem.

I'm using Android 6, not sure if the types changed since then, but with me the above method works 99.9% of the time. Never managed to hang up the phone in less than a second :)