Develop Reference

Starting an activity from a notification

I am working on an android app, and I am currently trying to create a notification, and once the user clicks on the notification, an activity should be launched. The notification is being created fine but the activity is not being started.
Below is the code for the notification.
private void showNotification(String username, String password)
{
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager notificationManager = (NotificationManager)context.getSystemService(ns);
CharSequence tickerText = "Username Copied";
long when = System.currentTimeMillis();
int icon = R.drawable.icon;
Notification notification = new Notification(icon, tickerText, when);
CharSequence contentTitle = "BPM - Login Management";
CharSequence contentText = "Username Copied";
Intent intentNotification = new Intent(context, CopyPassword.class);
intentNotification.setAction(Long.toString(when));
notification.flags |= Notification.FLAG_AUTO_CANCEL;
intentNotification.putExtra("password", password);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, intentNotification, PendingIntent.FLAG_UPDATE_CURRENT);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
final int NOTIFICATION_ID = 1;
notificationManager.notify(NOTIFICATION_ID, notification);
}
The notificiation is being generated from within a normal java class not an android activity in case this makes any difference.
Thanks for your help.

Remove the setAction this isn't needed.
Try:
Intent intentNotification = new Intent(context, CopyPassword.class);
intentNotification.putExtra("password", password);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, intentNotification, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
Also ensure the CopyPassword Activity is declared in your AndroidManifest
I wrote a blog post about it: http://blog.blundell-apps.com/notification-for-a-user-chosen-time/ :-D

Android notification not working

I've been attempting to get a notification of a successful upload from an ASyncTask to work all day. I'm not getting any errors from my current code but I can't get the notification to show in the notification bar (or anywhere else). I get no messages in LogCat and no notification appears in the Notification bar. This is my code:
Notification mNotification = new Notification(icon, tickerText, when);
CharSequence contentTitle = "upload completed.";
CharSequence contentText = "upload completed.";
Intent notificationIntent = new Intent(context, CastrActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_NO_CREATE);
mNotification.contentIntent = contentIntent;
mNotification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mNotification);
This is called from the onPostExecute() method of an ASyncTask. I'm a bit confused on the PendingIntent part, to be honest. Any clarification of what I suspect to be incorrect code there would be greatly appreciated.

Even though your problem is solved, I'll just post how I solved my problem that the notification was not showing, perhaps it might help other people reading the answers:
In my notification building I was missing the icon. As soon as I added something like setSmallIcon(R.drawable.ic_launcher) the notification was shown.

I have created the class to show notifications:
public class NotificationData {
public static NotificationManager mNotificationManager;
public static int SIMPLE_NOTFICATION_ID;
private Context _context;
public NotificationData(Context context) {
_context = context;
}
public void clearNotification() {
mNotificationManager.cancel(SIMPLE_NOTFICATION_ID);
}
public void SetNotification(int drawable, String msg, String action_string, Class cls) {
mNotificationManager = (NotificationManager) _context.getSystemService(Context.NOTIFICATION_SERVICE);
final Notification notifyDetails = new Notification(drawable, "Post Timer", System.currentTimeMillis());
long[] vibrate = { 100, 100, 200, 300 };
notifyDetails.vibrate = vibrate;
notifyDetails.ledARGB = 0xff00ff00;
notifyDetails.ledOnMS = 300;
notifyDetails.ledOffMS = 1000;
// notifyDetails.number=4;
notifyDetails.defaults =Notification.DEFAULT_ALL;
Context context = _context;
CharSequence contentTitle = msg;
CharSequence contentText = action_string;
Intent notifyIntent = new Intent(context, cls);
// Bundle bundle = new Bundle();
// bundle.putBoolean(AppConfig.IS_NOTIFICATION, true);
notifyIntent.putExtras(bundle);
PendingIntent intent = PendingIntent.getActivity(_context, 0,notifyIntent, android.content.Intent.FLAG_ACTIVITY_NEW_TASK);
notifyDetails.setLatestEventInfo(context, contentTitle, contentText, intent);
mNotificationManager.notify(SIMPLE_NOTFICATION_ID, notifyDetails);
}
}
How to use this class:
NotificationData notification; //create object
notification = new NotificationData(this);
notification.SetNotification(R.drawable.notification, "Notification Title", "Click to open", YourClassName.class);
Add permission android.permission.VIBRATE

Try this:
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
int icon = R.drawable.icon; // icon from resources
CharSequence tickerText = "Any thing"; // ticker-text
long when = System.currentTimeMillis(); // notification time
Context context21 = getApplicationContext(); // application Context
CharSequence contentTitle = "Anything"; // expanded message title
CharSequence contentText = (CharSequence) extras.get("message"); // expanded message text
Intent notificationIntent = new Intent(this, MainStart.class);
PendingIntent contentIntent = PendingIntent.getActivity(this, 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_VIBRATE;
notification.defaults |= Notification.DEFAULT_LIGHTS;
notification.defaults |= Notification.DEFAULT_SOUND;
notification.flags |= Notification.FLAG_AUTO_CANCEL;
/* long[] vibrate = { 0, 100, 200, 300 };
notification.vibrate = vibrate;
notification.ledARGB = Color.RED;
notification.ledOffMS = 300;
notification.ledOnMS = 300;*/
notification.setLatestEventInfo(context21, contentTitle, contentText, contentIntent);
mNotificationManager.notify(Constants.NOTIFICATION_ID, notification);

Another thing to try is to make sure your manifest contains
<permission android:name="android.permission.STATUS_BAR_SERVICE" android:protectionLevel="signature" />
Also mine seemed to ignore successive notifications with the same NOTIFICATION_ID.

For me this kept happening and I had no idea why but the problem was that the icon I set was too large so it was giving me some random error.

Android Status Bar Notification: make it un-clearable and have it return to app (not start a new instance)

I am developing an Android app and I want a status bar notification that cannot be cleared by the user. Does anyone know how to do that? I've seen them with apps like Skimble where a non-clearable notification appears while using the application.
Also, I'd when the user clicks/presses the notification, I want it to return to the app instance that is already running. Right now it starts a new instance. Again like the Skimble app, I just want to return to the already running instance of the app.
Thanks.

I found a solution to this problem. I used FLAG_ONGOING_EVENT to make the notification persist. Here's the code:
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
int icon = R.drawable.mypic;
long when = System.currentTimeMillis();
Notification notification = new Notification(icon, tickerText, when);
notification.flags = Notification.FLAG_ONGOING_EVENT;
Context context = getApplicationContext();
CharSequence contentTitle = "Title Text";
CharSequence contentText = "Content text.";
Intent intent = new Intent(this, MyClass.class);
intent.setAction("android.intent.action.MAIN");
intent.addCategory("android.intent.category.LAUNCHER");
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, intent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
final int HELLO_ID = 1;
mNotificationManager.notify(HELLO_ID, notification);

Here is the solution for the NotificationCompat.Builder
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("MyApp")
.setContentText("MyMsg")
.setOngoing(true);
More at the Google docs.

notification.setLatestEventInfo is deprecated so you have to use the Notification.builder and if your using 2.X and lower API you have to use NotificationComacpt.Builder and this is not applicable and I couldn't make my notification stays. so I used setDeleteIntent and pointed to the same activity and on resume method just call the block of code which shows your notification. So it is kinda work around.

Activity fails to update on intent receive

The following code gives the same content after I send two notifications with different content say Content1 and Content2. The resulting activity always shows only Content2. What could be the reason for it?
public void onReceive(Context context, Intent intent) {
abortBroadcast();
mNotificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
int icon = R.drawable.icon;
CharSequence tickerText = intent.getStringExtra("NOTIFICATION_TITLE");
long when = System.currentTimeMillis();
Notification notification = new Notification(icon, tickerText, when);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
CharSequence contentTitle = intent.getStringExtra("NOTIFICATION_TITLE");
CharSequence contentText = intent.getStringExtra("NOTIFICATION_DETAILS");
Intent notificationIntent = new Intent(context,CustomActivity.class);
notificationIntent.putExtra("TITLE", contentTitle);
notificationIntent.putExtra("DETAILS", contentText);
//notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
mNotificationManager.notify(notifUUID.hashCode(), notification);
}

Got the answer! the fix was simple - just added:
notificationIntent.setAction(String.valueOf(notifUUID.hashCode()));
Any unique value (timestamp would have worked too) set as the intent action would work.

How does one animate the Android sync status icon?

I simply want to start and stop the sync icon that is in the status bar. I thought it would be a simple call using NotificationManager, but I cannot find the documentation or sample Q&A on the web or SO.

I found my answer ...
http://libs-for-android.googlecode.com/svn-history/r46/trunk/src/com/google/android/accounts/AbstractSyncService.java
This shows how to set and cancel the stat_notify_sync icon.
private void showNotification(String authority) {
Object service = getSystemService(NOTIFICATION_SERVICE);
NotificationManager notificationManager = (NotificationManager) service;
int icon = android.R.drawable.stat_notify_sync;
String tickerText = null;
long when = 0;
Notification notification = new Notification(icon, tickerText, when);
Context context = this;
CharSequence contentTitle = "mobi"; //createNotificationTitle();
CharSequence contentText = "bob"; //createNotificationText();
PendingIntent contentIntent = createNotificationIntent();
notification.when = System.currentTimeMillis();
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
notificationManager.notify(mNotificationId, notification);
}
private void cancelNotification() {
Object service = getSystemService(NOTIFICATION_SERVICE);
NotificationManager nm = (NotificationManager) service;
nm.cancel(mNotificationId);
}

To get an animated sync icon you can use android.R.drawable.ic_popup_sync icon. For instance, using the more recent notification builder, you'd use something like:
Notification notification = new NotificationCompat.Builder(mContext)
.setContentTitle("my-title")
.setContentText("Loading...")
.setSmallIcon(android.R.drawable.ic_popup_sync)
.setWhen(System.currentTimeMillis())
.setOngoing(true)
.build();

Thanks for your example, it saved me some time. I created a static method in my Application so I can easily turn the icon on/off from anywhere in my code. I still can't get it to animate though.
In MyApplication.java:
private static Context context;
private static NotificationManager nm;
public void onCreate(){
context = getApplicationContext();
nm = (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
...
}
public static void setNetworkIndicator(boolean state) {
if (state == false) {
nm.cancel(NETWORK_ACTIVITY_ID);
return;
}
PendingIntent contentIntent = PendingIntent.getActivity(context, 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);
Notification n = new Notification(android.R.drawable.stat_notify_sync, null, System.currentTimeMillis());
n.setLatestEventInfo(context, "SMR7", "Network Communication", contentIntent);
n.flags |= Notification.FLAG_ONGOING_EVENT;
n.flags |= Notification.FLAG_NO_CLEAR;
nm.notify(NETWORK_ACTIVITY_ID, n);
}
And then from anywhere in my application:
MyApplication.setNetworkIndicator(true);
MyApplication.setNetworkIndicator(false);