How to send parameters from a notification-click to an activity?

Question

I can find a way to send parameters to my activity from my notification.

I have a service that creates a notification. When the user clicks on the notification I want to open my main activity with some special parameters. E.g an item id, so my activity can load and present a special item detail view. More specific, I'm downloading a file, and when the file is downloaded I want the notification to have an intent that when clicked it opens my activity in a special mode. I have tried to use putExtra on my intent, but cant seem to extract it, so I think I'm doing it wrong.

Code from my service that creates the Notification:

        // construct the Notification object.
     final Notification notif = new Notification(R.drawable.icon, tickerText, System.currentTimeMillis());


    final RemoteViews contentView = new RemoteViews(context.getPackageName(), R.layout.custom_notification_layout);
    contentView.setImageViewResource(R.id.image, R.drawable.icon);
    contentView.setTextViewText(R.id.text, tickerText);
    contentView.setProgressBar(R.id.progress,100,0, false);
    notif.contentView = contentView;        

    Intent notificationIntent = new Intent(context, Main.class);
    notificationIntent.putExtra("item_id", "1001"); // <-- HERE I PUT THE EXTRA VALUE
    PendingIntent contentIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
    notif.contentIntent = contentIntent;

    nm.notify(id, notif);

Code from my Activity that tries to fetch the extra parameter from the notification:

 public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);


    Bundle extras = getIntent().getExtras();
    if(extras != null){
        Log.i( "dd","Extra:" + extras.getString("item_id") );
    }

The extras is always null and I never gets anything into my log.

Btw... the onCreate is only run when my activity starts, if my activity is already started I also want to collect the extras and present my activity according to the item_id I receive.

Any ideas?

score 252 · Accepted Answer · edited Oct 01 '13 at 09:33

252

Take a look at this guide (creating a notification) and to samples ApiDemos "StatusBarNotifications" and "NotificationDisplay".

For managing if the activity is already running you have two ways:

Add FLAG_ACTIVITY_SINGLE_TOP flag to the Intent when launching the activity, and then in the activity class implement onNewIntent(Intent intent) event handler, that way you can access the new intent that was called for the activity (which is not the same as just calling getIntent(), this will always return the first Intent that launched your activity.
Same as number one, but instead of adding a flag to the Intent you must add "singleTop" in your activity AndroidManifest.xml.

If you use intent extras, remeber to call PendingIntent.getActivity() with the flag PendingIntent.FLAG_UPDATE_CURRENT, otherwise the same extras will be reused for every notification.

edited Oct 01 '13 at 09:33

lorenzo-s

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answered Jul 29 '09 at 15:50

Lucas S.

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and to answer the user's question about extras being null: You have to call `PendingIntent.getActivity()` with the flag `PendingIntent.FLAG_UPDATE_CURRENT`, otherwise the same extras will be reused for every notification. – mxk Nov 17 '09 at 13:08
2

u saved my day but why is transferring simple data like this so complicated in android – Illegal Argument May 27 '14 at 11:37
9

If you should have different notifications make sure to use different request IDs when calling `PendingIntent.getActivity()` in addition to setting `FLAG_ACTIVITY_SINGLE_TOP` on the `Intent` and `FLAG_UPDATE_CURRENT` on the `PendingIntent`. See http://stackoverflow.com/questions/7370324/notification-passes-old-intent-extras – schnatterer Jul 27 '14 at 16:55
@Matthias It seems `onNewIntent()` is no longer used. and.. `PendingIntent.getActivity()` with the flag `PendingIntent.FLAG_UPDATE_CURRENT` saved my day! Thanks. – mazend Oct 22 '20 at 09:47
1

Great answer. I spent hours debugging trying to figure out why the intent wasn't passing the extras, and `PendingIntent.FLAG_UPDATE_CURRENT` was exactly what I needed. Thanks. – Donald Duck Aug 29 '21 at 12:14

score 105 · Answer 2 · edited Sep 22 '16 at 08:43

I had the similar problem my application displays message notifications. When there are multiple notifications and clicking each notification it displays that notification detail in a view message activity. I solved the problem of same extra parameters is being received in view message intent.

Here is the code which fixed this. Code for creating the notification Intent.

 Intent notificationIntent = new Intent(getApplicationContext(), viewmessage.class);
    notificationIntent.putExtra("NotificationMessage", notificationMessage);
    notificationIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingNotificationIntent = PendingIntent.getActivity(getApplicationContext(),notificationIndex,notificationIntent,PendingIntent.FLAG_UPDATE_CURRENT);
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notification.setLatestEventInfo(getApplicationContext(), notificationTitle, notificationMessage, pendingNotificationIntent);

Code for view Message Activity.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    onNewIntent(getIntent());
}

@Override
public void onNewIntent(Intent intent){
    Bundle extras = intent.getExtras();
    if(extras != null){
        if(extras.containsKey("NotificationMessage"))
        {
            setContentView(R.layout.viewmain);
            // extract the extra-data in the Notification
            String msg = extras.getString("NotificationMessage");
            txtView = (TextView) findViewById(R.id.txtMessage);
            txtView.setText(msg);
        }
    }


}

score 33 · Answer 3 · answered Dec 08 '10 at 23:36

Maybe a bit late, but: instead of this:

public void onNewIntent(Intent intent){
    Bundle extras = intent.getExtras();
    Log.i( "dbg","onNewIntent");

    if(extras != null){
        Log.i( "dbg", "Extra6 bool: "+ extras.containsKey("net.dbg.android.fjol"));
        Log.i( "dbg", "Extra6 val : "+ extras.getString("net.dbg.android.fjol"));

    }
    mTabsController.setActiveTab(TabsController.TAB_DOWNLOADS);
}

Use this:

Bundle extras = getIntent().getExtras();
if(extras !=null) {
    String value = extras.getString("keyName");
}

Maybe late for the OP, but it's never late for the others in the Internet :) — espinchi, Apr 10 '11 at 18:03

score 21 · Answer 4 · answered Jan 26 '11 at 13:57

21

Encounter same issue here. I resolve it by using different request code, use same id as notification, while creating PendingIntent. but still don't know why this should be done.

PendingIntent contentIntent = PendingIntent.getActivity(context, **id**, notificationIntent, 0);
notif.contentIntent = contentIntent;
nm.notify(**id**, notif);

answered Jan 26 '11 at 13:57

jamchen

211
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you made my day!!! – gturedi Apr 07 '22 at 10:18
It works. Thinking about how it worked! – Akshay Masram Feb 28 '23 at 16:46

score 16 · Answer 5 · answered Aug 10 '09 at 21:21

After reading some email-lists and other forums i found that the trick seems to add som unique data to the intent.

like this:

   Intent notificationIntent = new Intent(Main.this, Main.class);
   notificationIntent.putExtra("sport_id", "sport"+id);
   notificationIntent.putExtra("game_url", "gameURL"+id);

   notificationIntent.setData((Uri.parse("foobar://"+SystemClock.elapsedRealtime())));

I dont understand why this needs to be done, It got something to do with the intent cant be identified only by its extras...

Anroid reuses intents, the intent action and request code make it unique, but not the extra data. So you need to set a unique request id or use different intent actions. — Bachi, Aug 15 '11 at 11:58

score 10 · Answer 6 · answered Apr 01 '15 at 12:56

I tried everything but nothing worked.

eventually came up with following solution.

1- in manifest add for the activity android:launchMode="singleTop"

2- while making pending intent do the following, use bundle instead of directly using intent.putString() or intent.putInt()

                    Intent notificationIntent = new Intent(getApplicationContext(), CourseActivity.class);

                    Bundle bundle = new Bundle();
                    bundle.putString(Constants.EXAM_ID,String.valueOf(lectureDownloadStatus.getExamId()));
                    bundle.putInt(Constants.COURSE_ID,(int)lectureDownloadStatus.getCourseId());
                    bundle.putString(Constants.IMAGE_URL,lectureDownloadStatus.getImageUrl());

                    notificationIntent.putExtras(bundle);

                    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
                            Intent.FLAG_ACTIVITY_SINGLE_TOP);
                    PendingIntent contentIntent = PendingIntent.getActivity(getApplicationContext(),
                            new Random().nextInt(), notificationIntent,
                            PendingIntent.FLAG_UPDATE_CURRENT);

It works for me. Must using different requestCode value and PendingIntent.FLAG_UPDATE_CURRENT flag. — phuongle, Jun 09 '15 at 10:31

score 5 · Answer 7 · answered Apr 26 '16 at 14:06

AndroidManifest.xml

Include launchMode="singleTop"

<activity android:name=".MessagesDetailsActivity"
        android:launchMode="singleTop"
        android:excludeFromRecents="true"
        />

SMSReceiver.java

Set the flags for the Intent and PendingIntent

Intent intent = new Intent(context, MessagesDetailsActivity.class);
    intent.putExtra("smsMsg", smsObject.getMsg());
    intent.putExtra("smsAddress", smsObject.getAddress());
    intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

    PendingIntent contentIntent = PendingIntent.getActivity(context, notification_id, intent, PendingIntent.FLAG_UPDATE_CURRENT);

MessageDetailsActivity.java

onResume() - gets called everytime, load the extras.

Intent intent = getIntent();
    String extraAddress = intent.getStringExtra("smsAddress");
    String extraBody = intent.getStringExtra("smsMsg");

Hope it helps, it was based on other answers here on stackoverflow, but this is the most updated that worked for me.

David Hackro · Answer 8 · 2016-05-02T15:34:23.750

It's easy,this is my solution using objects!

My POJO

public class Person implements Serializable{

    private String name;
    private int age;

    //get & set

}

Method Notification

  Person person = new Person();
  person.setName("david hackro");
  person.setAge(10);

    Intent notificationIntent = new Intent(this, Person.class);
    notificationIntent.putExtra("person",person);
    notificationIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_CLEAR_TOP);

NotificationCompat.Builder builder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.notification_icon)
                .setAutoCancel(true)
                .setColor(getResources().getColor(R.color.ColorTipografiaAdeudos))
                .setPriority(2)
                .setLargeIcon(bm)
                .setTicker(fotomulta.getTitle())
                .setContentText(fotomulta.getMessage())
                .setContentIntent(PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT))
                .setWhen(System.currentTimeMillis())
                .setContentTitle(fotomulta.getTicketText())
                .setDefaults(Notification.DEFAULT_ALL);

New Activity

 private Person person;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_notification_push);
    person = (Person) getIntent().getSerializableExtra("person");
}

Good Luck!!

score 4 · Answer 9 · answered Jul 07 '19 at 01:36

In your notification implementation, use a code like this:

NotificationCompat.Builder nBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
...
Intent intent = new Intent(this, ExampleActivity.class);
intent.putExtra("EXTRA_KEY", "value");

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
nBuilder.setContentIntent(pendingIntent);
...

To Get Intent extra values in the ExampleActivity, use the following code:

...
Intent intent = getIntent();
if(intent!=null) {
    String extraKey = intent.getStringExtra("EXTRA_KEY");
}
...

VERY IMPORTANT NOTE: the Intent::putExtra() method is an Overloaded one. To get the extra key, you need to use Intent::get[Type]Extra() method.

Note: NOTIFICATION_ID and NOTIFICATION_CHANNEL_ID are an constants declared in ExampleActivity

score 3 · Answer 10 · edited May 20 '16 at 12:40

3

After doing some search i got solution from android developer guide

PendingIntent contentIntent ;
Intent intent = new Intent(this,TestActivity.class);
intent.putExtra("extra","Test");
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);

stackBuilder.addParentStack(ArticleDetailedActivity.class);

contentIntent = stackBuilder.getPendingIntent(0,PendingIntent.FLAG_UPDATE_CURRENT);

To Get Intent extra value in Test Activity class you need to write following code :

 Intent intent = getIntent();
 String extra = intent.getStringExtra("extra") ;

edited May 20 '16 at 12:40

urfusion

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answered May 20 '16 at 12:38

mohit

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What is `stackBuilder` for? – AlexioVay Mar 21 '17 at 16:15

score 1 · Answer 11 · answered Nov 07 '17 at 11:11

1

Please use as PendingIntent while showing notification than it will be resolved.

PendingIntent intent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

Add PendingIntent.FLAG_UPDATE_CURRENT as last field.

answered Nov 07 '17 at 11:11

Muhammad Noman

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19
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Tested on Android 10. Working. – Oru Mar 09 '21 at 12:31

score 1 · Answer 12 · answered Jul 13 '19 at 00:39

G'day, I too can say that I tried everything mentioned in these posts and a few more from elsewhere. The #1 problem for me was that the new Intent always had a null bundle. My issue was in focusing too much on the details of "have I included .this or .that". My solution was in taking a step back from the detail and looking at the overall structure of the notification. When I did that I managed to place the key parts of the code in the correct sequence. So, if you're having similar issues check for:

1. Intent notificationIntent = new Intent(MainActivity.this, NotificationActivity.class);

2a. Bundle bundle = new Bundle();

//I like specifying the data type much better. eg bundle.putInt

2b. notificationIntent.putExtras(bundle);
3. PendingIntent contentIntent = PendingIntent.getActivity(MainActivity.this, WIZARD_NOTIFICATION_ID, notificationIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT);
notificationIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
4. NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
5.          NotificationCompat.Builder nBuilder =
                    new NotificationCompat.Builder(this)
                            .setSmallIcon(R.drawable.ic_notify)
                            .setContentTitle(title)
                            .setContentText(content)
                            .setContentIntent(contentIntent)
                            .setDefaults(Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE)
                            .setAutoCancel(false)//false is standard. true == automatically removes the notification when the user taps it.
                            .setColor(getResources().getColor(R.color.colorPrimary))
                            .setCategory(Notification.CATEGORY_REMINDER)
                            .setPriority(Notification.PRIORITY_HIGH)
                            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
            notificationManager.notify(WIZARD_NOTIFICATION_ID, nBuilder.build());

With this sequence I get a valid bundle.

score 0 · Answer 13 · answered Oct 13 '16 at 08:12

If you use

android:taskAffinity="myApp.widget.notify.activity"
android:excludeFromRecents="true"

in your AndroidManifest.xml file for the Activity to launch, you have to use the following in your intent:

Intent notificationClick = new Intent(context, NotifyActivity.class);
    Bundle bdl = new Bundle();
    bdl.putSerializable(NotifyActivity.Bundle_myItem, myItem);
    notificationClick.putExtras(bdl);
    notificationClick.setData(Uri.parse(notificationClick.toUri(Intent.URI_INTENT_SCHEME) + myItem.getId()));
    notificationClick.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);  // schließt tasks der app und startet einen seperaten neuen

    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    stackBuilder.addParentStack(NotifyActivity.class);
    stackBuilder.addNextIntent(notificationClick);

    PendingIntent notificationPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
    mBuilder.setContentIntent(notificationPendingIntent);

Important is to set unique data e.g. using an unique id like:

notificationClick.setData(Uri.parse(notificationClick.toUri(Intent.URI_INTENT_SCHEME) + myItem.getId()));

How to send parameters from a notification-click to an activity?

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