I have read many examples of how to create notification messages.
What i wanted to achieve, is because the notification will be executed by a widget, i would like
the notification intent when clicked to clear it self when the user clicks on it.I do not have an activity to return to.
The notification for my purposes will just plainly notify, nothing else.
So what would be the code of an intent that just clear/cancel itself.
The code below is an activity launched by a button(button code not included) the notification will be fired up by a background service.
CharSequence title = "Hello";
CharSequence message = "Hello, Android!";
final NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
final Notification notification = new Notification(R.drawable.icon,"A New Message!",System.currentTimeMillis());
notification.defaults=Notification.FLAG_ONLY_ALERT_ONCE+Notification.FLAG_AUTO_CANCEL;
Intent notificationIntent = new Intent(this, AndroidNotifications.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,notificationIntent, 0);
notification.setLatestEventInfo(AndroidNotifications.this, title,message, pendingIntent);
notificationManager.notify(NOTIFICATION_ID, notification);
Thanks
Check out FLAG_AUTO_CANCEL
Bit to be bitwise-ored into the flags field that should be set if the notification should be canceled when it is clicked by the user.
EDIT :
notification.flags |= Notification.FLAG_AUTO_CANCEL;
Set the flags in notification.flags instead of notification.defaults.
Example:
notification.flags |= Notification.FLAG_ONLY_ALERT_ONCE | Notification.FLAG_AUTO_CANCEL;
If you're using NotificationCompat.Builder (a part of android.support.v4) then simply call its object's method setAutoCancel
NotificationCompat.Builder builder = new NotificationCompat.Builder(context);
builder.setAutoCancel(true);
Some guys were reporting that setAutoCancel() did not work for them, so you may try this way as well
builder.build().flags |= Notification.FLAG_AUTO_CANCEL;
The only way I can see of doing this is to have your Notification's Intent point to a background Service. When this Service is launched, it would clear the given Notification using NotificationManager.cancel(int id). The Service would then stop itself. It's not pretty, and would not be easy to implement, but I can't find any other way of doing it.
/**
Post a notification to be shown in the status bar.
Obs.: You must save this values somewhere or even pass it as an extra through Intent to use it later
*/
notificationManager.notify(NOTIFICATION_ID, notification);
/**
Cancel a previously shown notification given the notification id you've saved before
*/
notificationmanager.cancel(NOTIFICATION_ID);
Using setContentIntent should solve your problem:
.setContentIntent(PendingIntent.getActivity(this, 0, new Intent(), 0));
For example:
NotificationCompat.Builder mBuilder= new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("title")
.setAutoCancel(true)
.setContentText("content")
.setContentIntent(PendingIntent.getActivity(this, 0, new Intent(), 0));
NotificationManager notificationManager= (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, mBuilder.build());
Often you might want to direct the user to the relevant content and so might replace 'new Intent()' with something else.
Related
I am using the following code for displaying notification . Upon displaying the notification , I go to the activity if I click in the notifications .
void Notify(String notificationTitle, String notificationMessage){
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.noti, notificationTitle,System.currentTimeMillis());
Intent notificationIntent = new Intent(this, SmsActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(this, 0,
notificationIntent, 0);
notification.setLatestEventInfo(this, notificationTitle,notificationMessage, intent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);
}
Now I want to update the text of notifications . How can I do that ?
You can try this
//First time
NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
.setContentText(context.getString(R.string.notif_text))
.setContentTitle(title)
.setSmallIcon(R.drawable.ic_action_alarm_2)
.setAutoCancel(false)
.setOngoing(running)
.setOnlyAlertOnce(true)
.setContentIntent(
PendingIntent.getActivity(context, 10,
new Intent(context, YourActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP),
0)
)
notificationManager.notify(id, builder.build());
//Second time
builder.setContentTitle(title);
notificationManager.notify(id, builder.build());
Send notification with same id:
https://developer.android.com/training/notify-user/managing.html
You can update the text of notification by sending different text in Notify(String notificationTitle, String notificationMessage) method.
The problem in approach suggested here is that if user already responded to this notification he could see it again, so you'd better to show it once instead.
So I wouldn't recommend to use this API at all in order to update your notifications.
If you are using it for that purpose you probably just exchange one bug for another.
Instead of passing 0 as notification ID, send some other number and trigger another notification with the same ID.
The existing one will be updated.
I can use the following code to display a notification icon of missed calls, I hope to click the icon to open system Missed Calls UI, how can I do ? Thanks!
At present, I can open ui.CallerMain.class UI if I remove the comment.
BTW, in system Missed Calls UI, missed calls are listed in there.
private void ShowMissCallNotification(Context myContext,String myContentText) {
NotificationManager notificationManager = (NotificationManager) myContext.getSystemService(android.content.Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(android.R.drawable.sym_call_missed,
myContext.getString(R.string.app_name),
System.currentTimeMillis());
notification.flags |= Notification.FLAG_ONGOING_EVENT;
notification.flags |= Notification.FLAG_NO_CLEAR;
CharSequence contentTitle= "Title";
CharSequence contentText =myContentText;
//Intent notificationIntent = new Intent(myContext, ui.CallerMain.class);
//PendingIntent contentItent = PendingIntent.getActivity(myContext, 0, notificationIntent, 0);
//notification.setLatestEventInfo(myContext, contentTitle, contentText,contentItent);
notificationManager.notify(NotificationID, notification);
}
Set a Pending Intent to the notification which will trigger the Call History.
First create an intent with Call Log
Intent resultIntent = new Intent();
resultIntent.setAction(Intent.ACTION_VIEW);
resultIntent.setType(CallLog.Calls.CONTENT_TYPE);
Then obtain the PendingIntent
PendingIntent resultPendingIntent =
PendingIntent.getActivity(
this,
0,
resultIntent,
PendingIntent.FLAG_UPDATE_CURRENT
);
Then set the PendingIntent to your notification builder
NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
.setSmallIcon()
.setContentTitle()
.setContentText()
.setContentIntent(resultPendingIntent);
notificationManager.notify(id, builder.build());
Now clicking the notification will open the Call Log.
Update: The code commented out in your snippet will work if you create the Intent as mentioned above in this answer. But please be aware that the method by which you are creating notification has been deprecated. Use NotificationCompat class from the support library in future.
I use the following code to show the notifications
private void SendNotification(String notificationTitle, String notificationMessage)
{
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
android.app.Notification notification = new android.app.Notification(R.drawable.ic_launcher, notificationMessage,
System.currentTimeMillis());
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.putExtra("notif_id", "5100");
//Setting the single top property of the notification and intent.
notification.flags = Notification.FLAG_ONGOING_EVENT | Notification.FLAG_AUTO_CANCEL | Notification.FLAG_SHOW_LIGHTS;
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
notification.setLatestEventInfo(MainActivity.this, notificationTitle, notificationMessage, pendingIntent);
notificationManager.notify((int)System.currentTimeMillis(), notification);
}
Each time a new notification comes, the previous one should be removed and the new one should be shown.
Any clues will be helpful.
Thanx in advance
o.
You are generatting a notification with different id each time (System.currentTimeMillis()), change it for a single ID.
notificationManager.notify(0, notification);
Post a notification to be shown in the status bar. If a notification with the same id has already been posted by your application and has not yet been canceled, it will be replaced by the updated information.
NotificationManager.html
There is one way that you should clear all Notification of your Application before you post a newer one.
Give it a shot like,
notificationManager.cancelAll();
To clear a particular Notification you can do it like,
notificationManager.cancel(notification_id);
just a simple question: How to make the single-line notification that will disappear after a short time.
Just like Whatsapp's:
My current notification code is still very basic:
Intent intent = new Intent("com.example.MyChat");
PendingIntent pIntent = PendingIntent.getActivity(context, 0, intent, 0);
Notification notification = new Notification.Builder(context)
.setContentTitle("New message from " + name)
.setContentText(message)
.setSmallIcon(R.drawable.ic_launcher).setContentIntent(pIntent)
.getNotification();
notification.defaults |= Notification.DEFAULT_SOUND;
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notification);
Thanks
This is called the "ticker" and it is shown briefly by the status bar if you set the tickerText property of your Notification.
See setTickerText.
You can use AlarmManager to invoke after a short time, say 5 seconds.
Also you can use a service, which gets launched, when first time the notification appears and it could cancel the notification after some time.
here you can cancel Notification using,
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.cancel(NOTFICATION_ID);
Have a look at this post, it might help you as well.
Changing from a standard notification with text and a picture to more complex types with custom designed layout requires the use of RemoteViews class. And instead of using the setContentTitle(), I used setContent(remoteviews) method because of the custom view.
After changing to custom view I deleted the setContent, setSmallIcon, and setContentTitle mehods, however after I did that the notification never showed up again.
If I am using a custom view all I have to use us the setContent() method is that correct? they why does it not work with I remove the other methods?
RemoteViews remoteviews = new RemoteViews("com.test.example", R.layout.custom_notifications);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(AudioService.this)
.setContent(remoteviews)
.setSmallIcon(R.drawable.ic_launcher)
.setContentTitle("My notification")
.setContentText("Hello World!")
.setOngoing(true);
Well since ICS I have not really touched the Notification Builder. Even to this day I still do it the old school way when GB was more popular. Example time:
String ns = Context.NOTIFICATION_SERVICE;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
// Setup an intent for when the user taps the notification
Intent notificationIntent = new Intent(this, SomeActivity.class);
PendingIntent contentIntent = PendingIntent.getActivity(
this, 0, notificationIntent, 0);
// `icona` is the icon shown in the status bar.
Notification notification = new Notification(icona,
"Ticker Text", System.currentTimeMillis());
// These flags should be self explanatory
notification.flags |= Notification.FLAG_NO_CLEAR;
notification.flags |= Notification.FLAG_ONGOING_EVENT;
// This is where you select the xml for you custm view
RemoteViews contentView = new RemoteViews(getPackageName(),
R.layout.custom_notification);
notification.contentView = contentView;
notification.contentIntent = contentIntent;
// Some ID number for the OS to keep track of your notification
int HELLO_ID = 123456;
// Send the notification
mNotificationManager.notify(HELLO_ID, notification);
This should work for every release of android. Simply because Notification.Builder is a wrapper to make it easier to create status bar notifications. Also the builder calls these methods if you look at androids source code.