Is it possible to start the application not from the initial activity?

Question

Android

Hello.
when the application starts, I get all the necessary information and pass it to the intent of each subsequent activity ...
Is this normal?
Well, that is, it will not happen that somehow the application will start not through the initial activity, but immediately following, and it turns out that there is no data, can this happen?
I know that when sending / receiving, you can specify a default (for the case when there is no data),
but this does not quite suit me and I need to know ...
please tell me, does any launch go through an activity that is marked as a launcher in the manifest?

Answer 1

No, not anyone, through Intent and adb you can do it differently, but this is only for developers, you are not obliged to give them such an opportunity, your conscience should not torment you because someone will not succeed and he will suffer losses, reverse- engineering is a risky business.