Create service by native implementation

[Godwin]

Has anybody been able to create a Service from his CN1 application by native implementation? I have been able to do this with Native Android but I have not succeeded in adding it to my CN1 application.

If you have, please assist me with the steps you took.

[Shai Almog]

Create service class. Place it in the hierarchy under native/android/your/package/name.
Add your xml fraction related to the service under the build argument android.xapplication.

[Godwin]

This is what I did:

1. I right clicked on native/android and created a package (com.mycom.myapp) but it created under src folder. I copied the folder to native/android.
2. I right clicked on the package folder structure and created a java class for the Service. I added it to the package I created above, it still did not appear under native/android/myPackage but under src/myPackage.
3. I copied the file to the directory under native/android.
4. I made the class to extend Service then wrote the code below in it :

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.Vibrator;
import com.mtechcomm.myFiends.MyFriendsManager;

public class RMService extends Service {


    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onDestroy() {
        // TODO Auto-generated method stub

        super.onDestroy();
       
    }

    @Override
    public void onCreate() {
        // TODO Auto-generated method stub
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        android.content.Context ctx = (android.content.Context) MyFriendsManager.getContext();
        Vibrator vibrator = (Vibrator) ctx.getSystemService(android.content.Context.VIBRATOR_SERVICE);
        vibrator.vibrate(2000);

        com.mtechcomm.myFiends.MyFriendsManager manager = new com.mtechcomm.myFiends.MyFriendsManager();
        manager.displayNotification();

        return START_STICKY;
    }

}

Then in my native Implementation class, I wrote:

public void beginService() {
        final Activity activity = com.codename1.impl.android.AndroidNativeUtil.getActivity();
        com.codename1.impl.android.CodenameOneActivity ctx = (com.codename1.impl.android.CodenameOneActivity) MyFriendsManager.getContext();
       
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 4);
        calendar.set(Calendar.MINUTE, 00);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.AM_PM, Calendar.PM);

        android.content.Intent intent = new android.content.Intent(ctx, MyFriendsManager.class);
        android.app.PendingIntent pintent = android.app.PendingIntent.getService(ctx, 0, intent, 0);
        android.app.AlarmManager alarm = (android.app.AlarmManager) ctx.getSystemService(android.content.Context.ALARM_SERVICE);
        alarm.set(android.app.AlarmManager.RTC, calendar.getTimeInMillis(), pintent);
       
    }

On start of My app, I called the beginService().

This does not work as I do not receive any notification at the time I set it. Please what am I doing wrong?

NB: The displayNotification Method is :

 public void displayNotification() {
        Display.getInstance().notifyStatusBar("My Application", "Today's Events", "You have birthdays today", true, true, null);
    }

[Chen Fishbein]

if what you want is to schedule some task on the AlarmManager, you should create a BroadcastReceiver and make sure to add it's entries to the manifest.

also once this task is triggered you are out of the app context you need to communicate back through intents or through SharedPreferences

[Godwin]

When I create a Broadcast Receiver class, in which directory do I put it? Like the picture above, Do I place the class under native/android/packageName?

[Chen Fishbein]

Yes, all classes that uses android api must be under the native/android/... dirs

[Godwin]

I have not been able to get this to work still.
These are my problems:

1. I have a native interface already and I am using it for Writing to the phone's Calendar.
2. Do I need to create another native interface that extends Service(in the case of Android)? what am I going to put inside NativeImpl.java class if I create another native interface?
3. I am using an alarm manager and pendingintent, where do I put the method that calls the alarm manager to start?

Please help out.

[Shai Almog]

2. No. Just define a service class in the native directory.
3. In the android.xapplication section, just paste your xml snippet there.

[Chen Fishbein]

You need a BroadcastReceiver not a service.

Try this in your native impl:

    private android.app.AlarmManager alarmMgr;

    private PendingIntent alarmIntent;

    public void startAlarm() {

        Activity context = AndroidNativeUtil.getActivity();

        

        alarmMgr = (android.app.AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        Intent intent = new Intent(context, MyReceiver.class);

        alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

        alarmMgr.setRepeating(android.app.AlarmManager.RTC, System.currentTimeMillis() + 2000, 1000*10, alarmIntent);

    }

Add your Receiver:

public class MyReceiver extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {

        System.out.println("cn1 got it!!!!!");

    }

}

Then add it to your manifest:

android.xapplication = <receiver android:name="MyReceiver"></receiver>

[Godwin]

Thanks so much for the help rendered, they are very useful.
I have created the files as suggested and these are my classes and methods :

public void onReceive(Context context, Intent intent) {

        com.codename1.impl.android.CodenameOneActivity ctx = (com.codename1.impl.android.CodenameOneActivity) MyFriendsManager.getContext();

        android.os.Vibrator vibrator = (android.os.Vibrator) ctx.getSystemService(android.content.Context.VIBRATOR_SERVICE);

        vibrator.vibrate(2000);

            com.mtechcomm.myFiends.MyFriendsManager manager = new com.mtechcomm.myFiends.MyFriendsManager();
            manager.displayNotification();
    }

However, the device neither vibrates nor displays the notification in the Application.java class.

[Godwin]

This is an extract from my log cat :

AlarmManager(  498): Native set alarm :Alarm{4288d2b8 type 1 com.mtechcomm.myFiends}
V/AlarmManager(  498): Native set alarm :Alarm{4288d2b8 type 1 com.mtechcomm.myFiends}
I/AlarmManager(  498): reset poweroff alarm none
V/ActivityManager(  498): Broadcast: Intent { flg=0x14 cmp=com.mtechcomm.myFiends/userclasses.MyReceiver (has extras) } ordered=true userid=0 callerApp=null

Is it any useful information?

[Shai Almog]

Did you add the vibrate permission in the build arguments.

[Godwin]

Yes I added :

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

to the android permissions.

The onReceive() never gets called(It does not print "System.out.println("*************  Just got into the OnReceive Method  ******************")");

[Shai Almog]

Maybe Chen knows.

[Chen Fishbein]

Can you share the code that schedule the Alarm?

[Godwin]

This schedules the Alarm:

public String startAlarm() {
        Activity context = com.codename1.impl.android.AndroidNativeUtil.getActivity();

        alarmMgr = (android.app.AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        Intent intent = new Intent(context, MyReceiver.class);

        alarmIntent = android.app.PendingIntent.getBroadcast(context, 0, intent, 0);

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 10);
        calendar.set(Calendar.MINUTE, 50);
        calendar.set(Calendar.SECOND, 00);
        alarmMgr.setRepeating(android.app.AlarmManager.RTC, calendar.getTimeInMillis(), 1000 * 10, alarmIntent);
        //alarmMgr.setRepeating(android.app.AlarmManager.RTC, System.currentTimeMillis(), 1000 * 60 * 10, alarmIntent);
        return "started";
    }

and this one is the receiver :

public class MyReceiver extends BroadcastReceiver {

    @Override

    public void onReceive(Context context, Intent intent) {

        System.out.println("*************  Just got into the OnReceive Method  ******************");
        //com.codename1.impl.android.CodenameOneActivity ctx = (com.codename1.impl.android.CodenameOneActivity) MyFriendsManager.getContext();
        android.content.Context ctx = (android.content.Context) MyFriendsManager.getContext();

        android.os.Vibrator vibrator = (android.os.Vibrator) ctx.getSystemService(android.content.Context.VIBRATOR_SERVICE);
        vibrator.vibrate(2000);

        System.out.println("*************  Just got here now  ******************");

            com.mtechcomm.myFiends.MyFriendsManager manager = new com.mtechcomm.myFiends.MyFriendsManager();
            manager.displayNotification();
    }
}

[Godwin]

Is there any luck on this?

[Chen Fishbein]

Not sure why it doesn't work for you, It works just fine for me.

I'd suggest you to build with source and then open the Android project in eclipse and debug this.

[Godwin]

I have been checking my code for why this doesn't work and I would like to ask:

1. I created a native interface earlier that I used for setting Calendar events. It is inside the CalendarEventImpl.java that I added the startAlarm() method. Is this right?
2. I created a Class outside the CalendarEventImpl.java as MyReceiver.java Class that extends BroadcastReceiver. Is this right?

Please give your advice.

[bo11...@163.com]

The problem has been resolved, thank you very much

[Godwin]

@Bo Lin, were you able to make it work for you? How did you do it?

[Shai Almog]

Both seem to be fine. I suggest logging from DDMS.

 I'm assuming Bo Lin posted to the wrong thread.

[Godwin]

This is an extract from the logcat :

I/System.out( 6958): We are testing the done button
I/System.out( 6958): All selected []
V/AudioHardwareMSM76XXA(  126): MBADRC and ADRC Disabled
W/ResourceType( 6958): No package identifier when getting value for resource number 0x00000000
V/AudioHardwareMSM76XXA(  126): open driver
V/AudioHardwareMSM76XXA(  126): get config
V/AudioHardwareMSM76XXA(  126): set config
V/AudioHardwareMSM76XXA(  126): buffer_size: 4800
V/AudioHardwareMSM76XXA(  126): buffer_count: 2
V/AudioHardwareMSM76XXA(  126): channel_count: 2
V/AudioHardwareMSM76XXA(  126): sample_rate: 44100
V/AudioHardwareMSM76XXA(  126): MBADRC Enabled
V/AudioHardwareMSM76XXA(  126): MBADRC Enabled 16
I/System.out( 6958): showKeyboard false
I/System.out( 6958): showKeyboard false
D/-heap   ( 6958): GC_FOR_ALLOC freed 646K, 34% free 9765K/14691K, paused 70ms
I/Codename One( 6958): Resource not found: theme_phone.ovr
I/Codename One( 6958): Resource not found: theme_android.ovr
I/Codename One( 6958): Resource not found: theme_android-phone.ovr
W/ResourceType( 6958): No package identifier when getting value for resource number 0x00000000
E/Crashlytics( 7014): Failed to retrieve settings from https://settings.crashlytics.com/spi/v2/platforms/android/apps/com.twitter.android/settings

 Can anything be deduced from this?

[Godwin]

I have not gotten this to work yet. I have a logcat message that I would like you to check out for me.

I/System.out(16399): *************** called the Alarm ******************
D/dalvikvm(16399): GC_CONCURRENT freed 1405K, 28% free 7744K/10648K, paused 3ms+4ms, total 62ms
I/System.out(16399): *************** Started at 1400490626589
V/AlarmManager(  495): Native set alarm :Alarm{4207e780 type 0 com.mtechcomm.myFiends}
V/AlarmManager(  495): Native set alarm :Alarm{41fd3a80 type 0 com.google.android.gms}
I/AlarmManager(  495): reset poweroff alarm none
V/ActivityManager(  495): Broadcast: Intent { flg=0x14 cmp=com.mtechcomm.myFiends/userclasses.CalendarEventImpl$MyReceiver (has extras) } ordered=true userid=0 callerApp=null

Please what do I do from here?

This is my code

 public void calAlarm(){
        Activity context = com.codename1.impl.android.AndroidNativeUtil.getActivity();
        MyReceiver mr = new MyReceiver();
        System.out.println("*************** called the Alarm ******************");
        mr.startAlarm(context);

    }
    public class MyReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {

            Log.d("OnStartCommand", "Service has started *******************");
            String message = intent.getStringExtra("message");
            System.out.println("*************  Just got into the OnReceive Method  ******************" + message);
           
            Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);

            vibrator.vibrate(2000);
            System.out.println("*************  Just got here now  ******************");
            com.mtechcomm.myFiends.MyFriendsManager manager = new com.mtechcomm.myFiends.MyFriendsManager();
            manager.displayNotification();
        }

        public void startAlarm(Context context) {            
            alarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

            Intent intent = new Intent(context, MyReceiver.class);

            alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.HOUR_OF_DAY, 11);
            calendar.set(Calendar.MINUTE, 55);
            calendar.set(Calendar.SECOND, 00); //calendar.getTimeInMillis()
            System.out.println("*************** Started at "+System.currentTimeMillis());
            alarmMgr.set(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), alarmIntent);            
        }
    }

[Chen Fishbein]

Nothing suspicious in the Log.

Did you tried this?did it worked?

    private android.app.AlarmManager alarmMgr;

    private PendingIntent alarmIntent;

    public void startAlarm() {

        Activity context = AndroidNativeUtil.getActivity();

        

        alarmMgr = (android.app.AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        Intent intent = new Intent(context, MyReceiver.class);

        alarmIntent = PendingIntent.getBroadcast(context, 0, intent, 0);

[Godwin]

I have been trying this code since then but not been able to figure out why the onRecieve() never gets called.From the Logcat, the Alarm is shown to be triggered but the onReceive is never called. This is an extract from the Logcat :

I/AlarmManager(  381): trigger Alarm{41c97040 type 0 com.mtechcomm.myFiends} [ty
pe=0 when=(2014-05-26 14:06:33) repeatInt=10000 PendingIntent{418ddb60: PendingI
ntentRecord{41add2b8 com.mtechcomm.myFiends broadcastIntent}}]

I/AlarmManager(  381): trigger Alarm{41c97040 type 0 com.mtechcomm.myFiends} [ty
pe=0 when=(2014-05-26 14:06:43) repeatInt=10000 PendingIntent{418ddb60: PendingI
ntentRecord{41add2b8 com.mtechcomm.myFiends broadcastIntent}}]

I/AlarmManager(  381): trigger Alarm{41c97040 type 0 com.mtechcomm.myFiends} [ty
pe=0 when=(2014-05-26 14:06:53) repeatInt=10000 PendingIntent{418ddb60: PendingI
ntentRecord{41add2b8 com.mtechcomm.myFiends broadcastIntent}}]

I/AlarmManager(  381): trigger Alarm{41c97040 type 0 com.mtechcomm.myFiends} [ty
pe=0 when=(2014-05-26 14:07:03) repeatInt=10000 PendingIntent{418ddb60: PendingI
ntentRecord{41add2b8 com.mtechcomm.myFiends broadcastIntent}}]

Any Ideas?

[Godwin]

It looks like I finally made a headway here. After registering the Receiver programmatically, the onReceive() method got called. I learnt that I should also Unregister the receiver after registering it, so at which point do I unregister it since the Alarm repeats?