Question

I have 2 applications A and B.

I want to start an activity in B from A. So I am using an implicit intent. Is there any way to make sure that only the activity in B is invoked by the intent?

i.e In the event that a hacker puts his application on the device trying to receive the same intent, I want to prevent that.

Answer 1

Use the setPackage method to specify whicj app should handle the intent. Here is an example using ZXing:

final String ZXING = "com.google.zxing.client.android";
Intent intent = new Intent(ZXING + ".SCAN");
intent.setPackage(ZXING);