PendingIntent does not send Intent extras

问题:

My MainActicity starts RefreshService with a Intent which has a boolean extra called isNextWeek.

My RefreshService makes a Notification which starts my MainActivity when the user clicks on it.

this looks like this:

    Log.d("Refresh", "RefreshService got: isNextWeek: " + String.valueOf(isNextWeek));

    Intent notificationIntent = new Intent(this, MainActivity.class);
    notificationIntent.putExtra(MainActivity.IS_NEXT_WEEK, isNextWeek);

    Log.d("Refresh", "RefreshService put in Intent: isNextWeek: " + String.valueOf(notificationIntent.getBooleanExtra(MainActivity.IS_NEXT_WEEK,false)));
    pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

    builder = new NotificationCompat.Builder(this).setContentTitle("Title").setContentText("ContentText").setSmallIcon(R.drawable.ic_notification).setContentIntent(pendingIntent);
    notification = builder.build();
    // Hide the notification after its selected
    notification.flags |= Notification.FLAG_AUTO_CANCEL;
    notificationManager.notify(NOTIFICATION_REFRESH, notification);

As you can see the notificationIntent should have the booleanextra IS_NEXT_WEEK with the value of isNextWeek which is put in the PendingIntent.

When I click now this Notification I always get false as value of isNextWeek

This is the way I get the value in the MainActivity:

    isNextWeek = getIntent().getBooleanExtra(IS_NEXT_WEEK, false);

Log:

08-04 00:19:32.500  13367-13367/de.MayerhoferSimon.Vertretungsplan D/Refresh: MainActivity sent: isNextWeek: true
08-04 00:19:32.510  13367-13573/de.MayerhoferSimon.Vertretungsplan D/Refresh: RefreshService got: isNextWeek: true
08-04 00:19:32.510  13367-13573/de.MayerhoferSimon.Vertretungsplan D/Refresh: RefreshService put in Intent: isNextWeek: true
08-04 00:19:41.990  13367-13367/de.MayerhoferSimon.Vertretungsplan D/Refresh: MainActivity.onCreate got: isNextWeek: false

When I directly start the MainActivity with an Intent with the ìsNextValue` like this:

    Intent i = new Intent(this, MainActivity.class);
    i.putExtra(IS_NEXT_WEEK, isNextWeek);
    finish();
    startActivity(i);

everything works fine and I get true when isNextWeek is true.

What do I make wrong that there is always a false value?

UPDATE

this solves the problem: https://stackoverflow.com/a/18049676/2180161

Quote:

My suspicion is that, since the only thing changing in the Intent is the extras, the PendingIntent.getActivity(...) factory method is simply re-using the old intent as an optimization.

In RefreshService, try:

PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_CANCEL_CURRENT);

See:

http://developer.android.com/reference/android/app/PendingIntent.html#FLAG_CANCEL_CURRENT

回答1:

Using PendingIntent.FLAG_CANCEL_CURRENT not a good solution because of inefficient use of memory. Instead use PendingIntent.FLAG_UPDATE_CURRENT.

Use also Intent.FLAG_ACTIVITY_SINGLE_TOP (the activity will not be launched if it is already running at the top of the history stack).

Intent resultIntent = new Intent(this, FragmentPagerSupportActivity.class).
                    addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);  
resultIntent.putExtra(FragmentPagerSupportActivity.PAGE_NUMBER_KEY, pageNumber);

PendingIntent resultPendingIntent =
                PendingIntent.getActivity(
                        this,
                        0,
                        resultIntent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );

Then:

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

            int startPageNumber;
            if ( savedInstanceState != null)
            {
                startPageNumber = savedInstanceState.getInt(PAGE_NUMBER_KEY);
//so on

It should work now.

---

If you still have not expected behaviour, try to implement void 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.

@Override
protected void onNewIntent(Intent intent) {
    int startPageNumber;

    if (intent != null) {
        startPageNumber = intent.getExtras().getInt(PAGE_NUMBER_KEY);
    } else {
        startPageNumber = 0;
    }
}

回答2:

I think you need to update the Intent when you receive a new one by overriding onNewIntent(Intent) in your Activity. Add the following to your Activity:

@Override
public void onNewIntent(Intent newIntent) {
    this.setIntent(newIntent);

    // Now getIntent() returns the updated Intent
    isNextWeek = getIntent().getBooleanExtra(IS_NEXT_WEEK, false);        
}

Edit:

This is needed only if your Activity has already been started when the intent is received. If your activity is started (and not just resumed) by the intent, then the problem is elsewhere and my suggestion may not fix it.

回答3:

Following code should work:-

int icon = R.drawable.icon;
String message = "hello";
long when = System.currentTimeMillis();
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(icon, message, when);

Intent notificationIntent = new Intent(context, MainActivity.class);
notificationIntent.putExtra("isNexWeek", true);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
notification.setLatestEventInfo(context, title, message, pIntent);
notification.flags |= Notification.FLAG_AUTO_CANCEL;
notificationManager.notify(0, notification);

In MainActivity onCreate:

if (getIntent().getExtras() != null && getIntent().getExtras().containsKey("isNextWeek")) {
        boolean isNextWeek = getIntent().getExtras().getBoolean("isNextWeek");
}