How to export an activity so other apps can call it?

Question

Well I searched a lot, but I didn\'t find a precise answer how to export an Activity, so an app can start it with startActivityforResult.

How do I achie

Answer 1

You need to declare an intent-filter in your Manifest (I took the following example from Barcode Scanner) :

Then create an intent with the same action string :

Intent intent = new Intent("com.google.zxing.client.android.SCAN");
startActivityForResult(intent, code);

Android should start your activity (or it will show a drop-down box if there are multiple apps sharing the same action string).