android后台广播接收机

广播接收器是否在静态定义(清单中)的后台运行。有人能解释一下吗?另外,如何在api 26(oreo)和更高版本的后台运行broadcastreceiver。

<receiver android:name=".ScreenOnOffReceiver"
              android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MY_PACKAGE_REPLACED"/>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
            <action android:name="myintent"/>
        </intent-filter>
    </receiver>

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

}

public class ScreenOnOffReceiver extends BroadcastReceiver {

public final static String SCREEN_TOGGLE_TAG = "SCREEN_TOGGLE_TAG";

@Override
public void onReceive(Context context, Intent intent) {
    String action = intent.getAction();
    Log.d(SCREEN_TOGGLE_TAG, " action name : " + action);
}

}

非常感谢。