Android: sending data from one app to another NOT trough startActivity()

Asked Nov 19 '19 at 10:21

Active Nov 19 '19 at 10:21

Viewed 45 times

I need send a message from one app to another while both apps are in execution in foreground (I'm using multiview). This will be a simple one-way only communication the message allows me to change the behaviour of the second application (the one receiving), I just need to communicate a pretty simple boolean/int value. Up to now I'm doing so trough Intent and startActivity() method but this will trigger an onCreate() event on the receiving app that leads to an unwanted behaviour.

    PackageManager manager = getPackageManager();
    Intent intent = manager.getLaunchIntentForPackage("it.tux.gcs");
    intent.putExtra("BACKWARD_FLAG",camera.backward);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    startActivity(intent);

There's a way to accomplish that? I looked in Android docs but I've been able only to find a lot of startActivity() base examples.

asked Nov 19 '19 at 10:21

weirdgyn

Your answer here: https://stackoverflow.com/questions/45433120/how-to-use-putextra-to-open-another-app-and-send-some-data-for-it – Hoàng Vũ Anh Nov 19 '19 at 10:26
nope. they are just suggesting to use `startActivity()` – weirdgyn Nov 19 '19 at 10:33
2

ok use Broadcasts , here: https://stackoverflow.com/questions/33492790/how-to-send-broadcast-from-one-app-to-another-app – Hoàng Vũ Anh Nov 19 '19 at 10:38
1

I think an intent flag FLAG_ACTIVITY_REORDER_TO_FRONT may work here for you as well. – DeanK Nov 19 '19 at 10:39
@DeanK this option will trigger onCreate() event ? – weirdgyn Nov 19 '19 at 10:58
I don't think it should. Checkout: https://stackoverflow.com/questions/15224127/oncreate-called-despite-using-flag-activity-reorder-to-front, especially David Wasser's answer. – DeanK Nov 19 '19 at 11:32
uhm... it looks like it does. – weirdgyn Nov 19 '19 at 15:16

Android: sending data from one app to another NOT trough startActivity()

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