Android 即使在开机后也可以收听手机状态

在我的应用程序中，我使用

广播接收器

收听手机状态事件（即收到的呼叫、空闲等）。代码如下：

public class PhoneCallreceiver extends BroadcastReceiver {
    private boolean ringing;
    private boolean received;

    public PhoneCallreceiver() {
    }

@Override
public void onReceive(Context context, Intent intent) {
    Log.v("ranjith", "enterted receiver");
    Bundle bundle = intent.getExtras();
    String incomingnumber = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
    String state = bundle.getString(TelephonyManager.EXTRA_STATE);
    Log.v("ranjapp", state);

    if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
        ringing = true;
        received = false;
    } 
}

Manifest.xml

    <receiver
        android:name=".PhoneCallreceiver"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.PHONE_STATE"/>
        </intent-filter>
    </receiver>

   <receiver
        android:name=".backend.BootStarter"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
        </intent-filter>
    </receiver>

代码：

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找到了我问题的答案，接收phonestate的intentfilter操作是android.telephony.TelephonyManager.action\u PHONE\u STATE\u CHANGED

我的更新代码如下：

public class BootStarter extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) { 
    PhoneCallreceiver callreceiver = new PhoneCallreceiver();
            context.registerReceiver(new PhoneCallreceiver(), new IntentFilter(android.telephony.TelephonyManager.ACTION_PHONE_STATE_CHANGED));
        }
    }

---

BootStarter是否未分层或未正确注册电话状态广播接收器？BootStarter正在启动，但如何在BootStarter的onReceive内启动PhoneCallReceiver？是否尝试将引导完成的意图筛选器添加到.PhoneCallReceiver？如果我这样做，则会在引导后调用PhoneCallReceiver，但只有在接收到调用时才需要执行该代码

public class BootStarter extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) { 
    PhoneCallreceiver callreceiver = new PhoneCallreceiver();
            context.registerReceiver(new PhoneCallreceiver(), new IntentFilter(android.telephony.TelephonyManager.ACTION_PHONE_STATE_CHANGED));
        }
    }