广播接收器无法进行传入呼叫检测

Question

这是我实现的代码，顺便说一下，我阅读了有关此主题的堆栈溢出的所有其他问题，但它仍然不起作用

电话呼叫接收器类

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 void onIncomingCallStarted(Context ctx, String number, Date start){}
protected void onOutgoingCallStarted(Context ctx, String number, Date start){}
protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end){}
protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end){}
protected 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;
onIncomingCallStarted(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);
}
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;
}

}

我还添加了这个扩展最后一个的类：

public class CallReceiver extends PhonecallReceiver {
@Override
protected void onIncomingCallStarted(Context ctx, String number, Date start) {
//here is what I want to perform some tasks
}
@Override
protected void onOutgoingCallStarted(Context ctx, String number, Date start) {
}
@Override
protected void onIncomingCallEnded(Context ctx, String number, Date start, Date end) {
}
@Override
protected void onOutgoingCallEnded(Context ctx, String number, Date start, Date end) {
}
@Override
protected void onMissedCall(Context ctx, String number, Date start) {
}
}

但它与我放在上面的东西无关，代码从不做任何事情。 我的意思是该方法在IncomingCallStarted(上下文ctx，字符串编号，日期开始(上受保护无效永远不会运行

清单为：

<receiver android:name=".MainActivity$CallReceiver" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>    </application>

和权限

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

请注意，类 CallReceiver 是在 MainActivity 类中创建的。
我做错了什么？我无法修复它。请帮忙

提前谢谢。

Answer 1

尝试添加以下 2 个权限：

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

Answer 2

是的，我最初写的，应该更新它 - 从较新版本的 Android 开始，您不能再在清单中为该信号注册接收器 - 您只能以编程方式执行此操作。 这意味着您需要前台服务来运行和注册接收器。

看起来这种变化是在Android O中。