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

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?

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");
}

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...

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); 

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

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);
        }
    }


}

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!!

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.

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.

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") ;

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.

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);

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()));