Aswan Aswan - 5 months ago 61
Android Question

launch facebook app from other app

How can I launch a facebook app from my app in android?

Answer

To just start the default Launcher Activity:

Intent intent = new Intent("android.intent.category.LAUNCHER");
intent.setClassName("com.facebook.katana", "com.facebook.katana.LoginActivity");
startActivity(intent);

I did some research, because I wanted to find this out :). I found some ways how to start different activities easily. But I can not guarantee that this will work after upgrades of facebook. I tested it with my current facebook app and it works. At least I tested it with "adb shell" using "am start .....".

Basic is:

String uri = "facebook://facebook.com/inbox";
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
startActivity(intent);

the facebook.com part is not checked. you can even type: "facebook://gugus.com/inbox" having the same effect.

How to do this in adb.

1. Start adb shell through console: "adb shell"
2. run: "am start -a android.intent.action.VIEW -d facebook://facebook.com/inbox"

this will start the inbox activity. Here some Uris with examples. I think they speak for themselves what they do.

facebook://facebook.com/inbox
facebook://facebook.com/info?user=544410940     (id of the user. "patrick.boos" won't work)
facebook://facebook.com/wall
facebook://facebook.com/wall?user=544410940   (will only show the info if you have added it as friend. otherwise redirects to another activity)
facebook://facebook.com/notifications
facebook://facebook.com/photos
facebook://facebook.com/album
facebook://facebook.com/photo
facebook://facebook.com/newsfeed

there might be additianl parameters you can give to certain of those uris, but I have no time to go through all the code of those activities.

How did I do this? check out apktool.

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