service does not start after wiping memory

Question

Hello guys I am developing an application that needs a service to warn the user according to events at large times times + 24h...

then everything is working, I open the application, the service starts, close the application the service continues running, brings the notifications when necessary... My 2 problems are as follows, my cell phone as many, has the function to "clear the memory" when I run this function, my service is deleted and never runs again, only if I open the app again. realized that other apps like facebook, Whatsapp, messenger continue running normally after this process

the other is to post restart the phone the service does not run on boot Important information: I tested it in the emulator of android studio, and start as configured, it works... but in my mobile, for example not... and not of any error. I configured as follows: in the manifest:

  <receiver android:name=".StartUpBootReceiver">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

`public class Startupbootreceiver extends Broadcastreceiver {

@Override
public void onReceive(Context context, Intent intent) {
    NotificacaoController valor = new NotificacaoController(context);
    Toast.makeText(context,"ENTROU no STARTBOOTSERVICE",Toast.LENGTH_LONG).show();

    if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction()) && valor.returnNotificacao().equals("true")) {
        Toast.makeText(context,"STARTBOOTSERVICE",Toast.LENGTH_LONG).show();
        System.out.println("-------------------------------------------STARTBOOT");
        context.startService(new Intent(context, ShowNotificationService.class));
    }
}

`