Starting Kivy service on bootup (Android)

I’m trying to start my kivy app’s service on bootup.

I’m sure that my service is ok because it works when I start my app. But on bootup I have a problem.

I’ve read this article and tried to make it:

package net.saband.myapp;

import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.Context;
import org.kivy.android.PythonActivity;

public class MyBroadcastReceiver extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        Intent ix = new Intent(context, PythonActivity.class);
        ix.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(ix);
    }
}

It works but starts the app but not the service. So I’ve studied some questions on StackOverflow and changed my code for this:

package net.saband.myapp;

import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.Context;
import net.saband.myapp.ServiceMyservice;

public class MyBroadcastReceiver extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        Intent ix = new Intent(context, ServiceMyservice.class);
        ix.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startService(ix);
    }
}

… and got an error:

10-21 19:16:44.784  1513  1569 I ActivityManager: Start proc 6334:net.saband.myapp:service_myservice/u0a116 for service net.saband.myapp/.ServiceMyservice
10-21 19:16:44.786  6334  6334 I art     : Late-enabling -Xcheck:jni
10-21 19:16:44.885  6334  6334 D AndroidRuntime: Shutting down VM
10-21 19:16:44.888  6334  6334 E AndroidRuntime: FATAL EXCEPTION: main
10-21 19:16:44.888  6334  6334 E AndroidRuntime: Process: net.saband.myapp:service_myservice, PID: 6334
10-21 19:16:44.888  6334  6334 E AndroidRuntime: Theme: themes:{}
10-21 19:16:44.888  6334  6334 E AndroidRuntime: java.lang.RuntimeException: Unable to start service net.saband.myapp.ServiceMyservice@8c96929 with Intent { cmp=net.saband.myapp/.ServiceMyservice }: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.os.Bundle.getString(java.lang.String)' on a null object reference

Can you please explain me what’s wrong and what should I do to start the service? Thanks!

UPDATED

By request of @Juggernaut I add my service code:

from time import sleep

if __name__ == '__main__':
    while True:
        print "myapp service"
        sleep(5)

It works when I run app because app calls the service:

def __start_service(self):
    if platform == 'android':
        service = autoclass('net.saband.myapp.ServiceMyservice')
        mActivity = autoclass('org.kivy.android.PythonActivity').mActivity
        argument = ''
        service.start(mActivity, argument)

UPDATED (AndroidManifest)

Here is some strings from my AndroidManifest.xml.

1. I have the RECEIVE_BOOT_COMPLETED permission:

   <uses-permission android_name="android.permission.RECEIVE_BOOT_COMPLETED" />

2. I have the receiver:

   <receiver android_name=".MyBroadcastReceiver" android_enabled="true">
<intent-filter>
<action android_name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>
</receiver>

3. I have the service registered:

   <service android_name="net.saband.myapp.ServiceMyservice"
android_process=":service_myservice" />

By advice of @mariachi I’ve tried to change android:enabled="true" to android_enabled="false" in the receiver and add android:exported="false" to the service. In this case when the device starts happens nothing: no errors, no service.