[转] How to detect incoming calls in an Android

阅读更多原文地址： https://stackoverflow.com/a/15564021

实测可用。
测试手机：
MeiZu MX4 Android 5.1
HuaWei Mate 8 Android 7.0

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Here's what I use to do this:

AndroidManifest:

My base reusable call detector

package com.gabesechan.android.reusable.receivers;import java.util.Date;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.telephony.TelephonyManager;public abstract class PhonecallReceiver extends BroadcastReceiver {    //The receiver will be recreated whenever android feels like it.  We need a static variable to remember data between instantiations    private static int lastState = TelephonyManager.CALL_STATE_IDLE;    private static Date callStartTime;    private static boolean isIncoming;    private static String savedNumber;  //because the passed incoming is only valid in ringing    @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);        }    }    //Derived classes should override these to respond to specific events of interest    protected abstract void onIncomingCallReceived(Context ctx, String number, Date start);    protected abstract void onIncomingCallAnswered(Context ctx, String number, Date start);    protected abstract void onIncomingCallEnded(Context ctx, String number, Date start, Date end);    protected abstract void onOutgoingCallStarted(Context ctx, String number, Date start);          protected abstract void onOutgoingCallEnded(Context ctx, String number, Date start, Date end);    protected abstract void onMissedCall(Context ctx, String number, Date start);    //Deals with actual events    //Incoming call-  goes from IDLE to RINGING when it rings, to OFFHOOK when it's answered, to IDLE when its hung up    //Outgoing call-  goes from IDLE to OFFHOOK when it dials out, to IDLE when hung up    public void onCallStateChanged(Context context, int state, String number) {        if(lastState == state){            //No change, debounce extras            return;        }        switch (state) {            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();                    onOutgoingCallStarted(context, savedNumber, callStartTime);                                     }                else                {                    isIncoming = true;                    callStartTime = new Date();                    onIncomingCallAnswered(context, savedNumber, callStartTime);                 }                break;            case TelephonyManager.CALL_STATE_IDLE:                //Went to idle-  this is the end of a call.  What type depends on previous state(s)                if(lastState == TelephonyManager.CALL_STATE_RINGING){                    //Ring but no pickup-  a miss                    onMissedCall(context, savedNumber, callStartTime);                }                else if(isIncoming){                    onIncomingCallEnded(context, savedNumber, callStartTime, new Date());                                       }                else{                    onOutgoingCallEnded(context, savedNumber, callStartTime, new Date());                                                               }                break;        }        lastState = state;    }}

Then to use it, simply derive a class from it and implement a few easy functions, whichever call types you care about:

public class CallReceiver extends PhonecallReceiver {    @Override    protected void onIncomingCallReceived(Context ctx, String number, Date start)    {        //    }    @Override    protected void onIncomingCallAnswered(Context ctx, String number, Date start)    {        //    }    @Override    protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end)    {        //    }    @Override    protected void onOutgoingCallStarted(Context ctx, String number, Date start)    {        //    }     @Override     protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end)    {        //    }    @Override    protected void onMissedCall(Context ctx, String number, Date start)    {        //    }}

In addition you can see a writeup I did on why the code is like it is on my blog. Gist link: https://gist.github.com/ftvs/e61ccb039f511eb288ee

EDIT: Updated to simpler code, as I've reworked the class for my own use

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