Corso Base. ActionSMS. Maurizio Cozzetto, Francesco Sarasini

Transcript

1 Corso Base ActionSMS Maurizio Cozzetto, Francesco Sarasini

2 Broadcast Receivers A broadcast receiver is a component that does nothing but receive and react to broadcast announcements (Intents). For a Broadcast Receiver to be enabled it needs to be registered. When registering a Broadcast Receiver you must use an Intent Filter to specify which Intents it is listening for.

3 Services The invisible workers of your application Android offers the Service class to create application components specifically to handle operations and functionality that should run invisibly, without a user interface.

4 ActionSMS: Argomenti trattati - Broadcast Receiver - Content provider - Activity - Service - Text To Speech - Text files - GPS Location - Device vibration -...

5 ActionSMS: Funzionalità - Lettura di un SMS in entrata tramite sintesi vocale - Esecuzione di compiti specifici indicati da remoto tramite SMS - Invio SMS

6 ActionSMS: Interfaccia

7 ActionSMS: Attesa di un SMS (1/4) <uses-permission android:name="android.permission.receive_sms" /> <uses-permission android:name="android.permission.read_sms" />... <receiver android:name="it.sarasini.android.actionsms.smsbroadcastreceiver"> <intent-filter> <action android:name="android.provider.telephony.sms_received" /> </intent-filter> </receiver>

8 ActionSMS: Attesa di un SMS (2/4) public class SMSBroadcastReceiver extends BroadcastReceiver public void onreceive(context context, Intent intent) { // Attenzione // ciò che viene effettuato qui va fatto velocemente! // leggo dal file di conf. se il servizio è abilitato ConfigFile config = new ConfigFile(context); if(!config.isenabled()) return;...

9 ActionSMS: Attesa di un SMS (3/4)... // Prendo il messaggio Bundle bundle = intent.getextras(); if(bundle == null) return; protocol data unit Object[] pduarray = (Object[]) bundle.get("pdus"); SmsMessage message = SmsMessage.createFromPdu((byte[])pduArray[0]);...

10 ActionSMS: Attesa di un SMS (4/4)... // lancio un servizio per gestire il lavoro Intent i = new Intent(); i.setaction("it.sarasini.android.actionsms.actionservice"); // Passo numero e testo del messaggio al servizio i.putextra( number, message.getoriginatingaddress()); i.putextra( text, message.getmessagebody().tostring()); } } if(context.startservice(serviceintent) == null) toast(impossibile avviare il servizio);

11 ActionSMS: Gestione di un SMS public class ActionService extends Service public int onstartcommand(intent intent, int flags, int startid) { // Prendo numero e testo che mi hanno passato Bundle extras = intent.getextras(); numero = extras.getstring( number ); testo = extras.getstring( text ); // Faccio qualcosa } } return START_STICKY;

12 ActionSMS: Sintesi vocale... extends Service implements OnInitListener public int onstartcommand(intent intent, int flags, int startid) { } tts = new TextToSpeech(getApplicationContext(), public void oninit(int status) { } } if(status == TextToSpeech.SUCCESS) tts.speak( Ciao, TextToSpeech.QUEUE_ADD, null);

13 ActionSMS: Dal numero al nome Uri rubrica = ContactsContract.PhoneLookup.CONTENT_FILTER_URI; Uri lookupuri = Uri.withAppendedPath(rubrica, number); Cursor idcursor = getcontentresolver().query(lookupuri, null, null, null, null); if(idcursor.movetofirst()) { int colonna = idcursor.getcolumnindexorthrow( ContactsContract.Contacts.DISPLAY_NAME); } String nome = idcursor.getstring(colonna); idcursor.close();

14 ActionSMS: Invio di un SMS <uses-permission android:name="android.permission.send_sms"/> String number = ; String text = Ciao sono un sms! ; SmsManager smsmanager = SmsManager.getDefault(); smsmanager.sendtextmessage(number, null, text, null, null);

15 ActionSMS: Localizzazione GPS LocationManager locationmanager; String cls = Context.LOCATION_SERVICE; lm = (LocationManager) getsystemservice(cls); Location location = lm.getlastknownlocation(locationmanager.gps_provider); if(location == null) // Errore String lat = location.getlatitude(); String long = location.getlongitude();

16 ActionSMS: Good Vibrations String vibratorservice = Context.VIBRATOR_SERVICE; Vibrator vibrator = (Vibrator)getSystemService(vibratorService); // Vibra per 4000 ms vibrator.vibrate(4000);

17 ActionSMS: Dimostrazione