Develop Reference

Showing notification in IntentService

i need to show a notification in a method from intent service, i modify the context to "getApplicationContext" but it doesnt show anything.
Im using the android example: http://developer.android.com/guide/topics/ui/notifiers/notifications.html
private void notf_SinConexion()
{
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder( getApplicationContext() )
.setSmallIcon( R.drawable.ic_action_action_alarm_on )
.setContentTitle( "Title" )
.setContentText( "Message" );
Intent resultIntent = new Intent( getApplicationContext(), MainActivity.class );
TaskStackBuilder stackBuilder = TaskStackBuilder.create( getApplicationContext() );
stackBuilder.addParentStack( MainActivity.class );
stackBuilder.addNextIntent( resultIntent );
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent( resultPendingIntent );
NotificationManager mNotificationManager =
(NotificationManager) getApplicationContext().getSystemService( Context.NOTIFICATION_SERVICE );
// mId allows you to update the notification later on.
mNotificationManager.notify( 10, mBuilder.build() );
}

First you need to read this article on how to use Notifications.
Next use this to send a Notification, you can write this code in the service class at the point where you receive some data from the client.
NotificationManager notificationManager =
(NotificationManager) getSystemService(NOTIFICATION_SERVICE);
int icon = R.drawable.notification_icon;
CharSequence notiText = "Your notification from the service";
long meow = System.currentTimeMillis();
Notification notification = new Notification(icon, notiText, meow);
Context context = getApplicationContext();
CharSequence contentTitle = "Your notification";
CharSequence contentText = "Some data has arrived!";
Intent notificationIntent = new Intent(this, YourActivityThatYouWantToLaunch.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
int SERVER_DATA_RECEIVED = 1;
notificationManager.notify(SERVER_DATA_RECEIVED, notification);

Notification not received in Android 2.3

I'm implementing a notification service and I have problems to receive the messages in Android 2.3. I receive the messages in versions 4.0 and newer but not in 2.3. In logcat appears the following errors:
Could not find class 'com.google.android.gms.ads.internal.b.c', referenced from method com.google.android.gms.ads.internal.n.e.a
.
.
Could not find class 'android.app.Notification$Builder', referenced from method com.google.android.gms.common.l.a
What could be the problem? This is my method to send the notification:
private void sendNotification(String msg) {
MainActivity.notificationClicked = true;
int icon = R.drawable.ic_launcher;
long when = System.currentTimeMillis();
NotificationManager notificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
String strMessage = loadPreferences();
String newMessage = "";
if (!strMessage.isEmpty())
newMessage = strMessage + "<br>" + msg;
else
newMessage = msg;
RemoteViews contentView = new RemoteViews(getPackageName(), R.layout.custom_notification_layout);
contentView.setImageViewResource(R.id.image, R.drawable.ic_launcher);
contentView.setTextViewText(R.id.text, Html.fromHtml(newMessage));
Notification notification = new Notification(icon, Html.fromHtml(msg), when);
notification.contentView = contentView;
String title = this.getString(R.string.app_name);
ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
List < ActivityManager.RunningTaskInfo > taskInfo = am.getRunningTasks(1);
Log.d("current task :", "CURRENT Activity ::" + taskInfo.get(0).topActivity.getClass().getSimpleName());
ComponentName componentInfo = taskInfo.get(0).topActivity;
Intent notificationIntent;
if(!componentInfo.getPackageName().equalsIgnoreCase("com.example.myapp")){
notificationIntent = new Intent(getApplicationContext(),
FirstActivity.class);
} else {
notificationIntent = new Intent(getApplicationContext(),
MainActivity.class);
notificationIntent.putExtra("login", true);
}
notificationIntent.putExtra("message", Html.fromHtml(msg));
oldMessage = newMessage;
savePreferences(getApplicationContext(), oldMessage);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
int notifyID = 1;
PendingIntent intent = PendingIntent.getActivity(this, notifyID,
notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
notification.setLatestEventInfo(this, title, msg, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.contentIntent = intent;
notificationManager.notify(notifyID, notification);
}
When I send the message I receive it in device with Android 4.2 for example but not in devices with Android 2.3. I'm debugging the app with Android 2.3 and I have put a breakpoint in the method onHandleIntent of the IntentService but it never comes. I think that it could be for the errors that appears in logcat.
How can I solve the problem for devices with Android 2.3?
Thanks in advance.
I change Notification to NotificationCompat:
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
mBuilder.setContentIntent(intent);
Notification notification = mBuilder.build();
notification.contentView = contentView;
notificationManager.notify(notifyID, notification);
but the problem persist, in logcat appears the same error

Try this code. I've used this in my project and it runs good. receiverActivity is activity that will open onclick, as I can remember, but I'm not 100% sure of it.
public static void showNotification ( Context context, Class receiverActivityClass, String title, String text, int icon )
{
Intent intent = new Intent( context, receiverActivityClass );
PendingIntent pendingIntent = PendingIntent.getActivity( context, 0, intent, 0 );
// Build notification
Notification notification = new Notification.Builder( context )
.setContentTitle( title )
.setContentText( text )
.setSmallIcon( icon )
.setContentIntent( pendingIntent )
.setAutoCancel( true )
.getNotification();
NotificationManager notificationManager =
( NotificationManager ) context.getSystemService( context.NOTIFICATION_SERVICE );
notificationManager.notify( 0, notification );
}

Custom notification sound not playing

I'm trying to make a custom sound play on a status bar notification. The .mp3 file is in res/raw/. But when I notify the user the sound is not played. I've tryied with MediaPlayer, and it works, but I dont want to make it play with MediaPlayer.
Here is my method:
public void showNotification()
{
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.feedback; // icon from resources
CharSequence tickerText = mContext.getString(R.string.statusbar_notification); // ticker-text
long when = System.currentTimeMillis(); // notification time
Context context = getApplicationContext(); // application Context
CharSequence contentTitle = mContext.getString(R.string.statusbar_notification); // message title
CharSequence contentText = mContext.getString(R.string.statusbar_notificatione_detailed); // message text
Intent notificationIntent = new Intent(mContext, Main.class);
PendingIntent contentIntent = PendingIntent.getActivity(mContext, 0, notificationIntent, 0);
// the next two lines initialize the Notification, using the configurations above
Notification notification = new Notification(icon, tickerText, when);
//notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_VIBRATE;
notification.sound = Uri.parse("android.resource://" + getPackageName() + "/R.raw.notificationsound");
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(1, notification);
}
Thanks.

From the documentation for ContentResolver:
The Uri should be one of the following formats:
android.resource://package_name/id_number
You are passing the String "R.raw.notificationsound" which means nothing.
Instead try this:
notification.sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.notificationsound );

Notification is set immediately in Android

Call to method:
initNotificatie(endDate.getTime());
Log.d("temp", "end: " + endDate.toGMTString()); // end: 13 Apr 2011 12:45:00 GMT
The method:
public void initNotificatie(long when) {
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.herinnering_button_dropdown;
String contentTitleString = getString(R.string.notification_title);
String contentTekstString = getString(R.string.notification_tekst);
CharSequence tickerText = "NotificationTekst";
Notification notification = new Notification(icon, tickerText, when);
Context context = getApplicationContext();
CharSequence contentTitle = contentTitleString;
CharSequence contentText = contentTekstString;
Intent notificationIntent = new Intent(this, MapDashboardActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_VIBRATE;
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
final int HELLO_ID = 1;
mNotificationManager.notify(HELLO_ID, notification);
}
How come this notification is set immediately while the notification is set for tomorrow? Is this because the notification constructor I'm using is deprecated? I can only use that one because I'm programming on level 4.

The when parameter refers to the time to be shown in the time field. It is not the time at which notification should be shown. In order to do that, use AlarmManager.

multiple Notification in android

i want to create reminder application...I am using Notification Manager...
I am using this line as instantiate of Notification...
long when=sdf.parse("09 06 2010 15:45:00");
Notification notifyDetails = new Notification(R.drawable.reminder_1,"Reminder",when.getTime());
I need to start the notification at specified time...but here it is notification started immediately when i gave the date...and also help me to show multiple notification

The when argument is a time for the Notification which is displayed when the notification bar is in expanded view. It is not used for scheduling when the Notification is displayed.
If you want to schedule something to happen in the future try the the AlarmManager service.

String ns = Context.NOTIFICATION_SERVICE;
NotificationManager notificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.update;
CharSequence tickerText = "assignments";
long when = System.currentTimeMillis();
Notification assignmentNotification = new Notification(icon, tickerText, when);
assignmentNotification.defaults |= Notification.DEFAULT_SOUND;
long[] vibrate = {0,100,200,300};
assignmentNotification.vibrate = vibrate;
Context context = getApplicationContext();
CharSequence contentTitle = "check assignments";
CharSequence contentText = "chek ur app for assignments ";
Intent notificationIntent = new Intent(context, ViewAssignmentnotificationActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent,0);
assignmentNotification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
** final int id = 2;
Use another "id" for multiple notifiucation...