Android app activity launches when launching from another app activity but doesn't launch on its on.

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http://stackoverflow.com – so i made 2 apps and i wanted to run the activity of one app from the activity of the other app. i can do that by passing a intent from the first app to start the second app. we were required to have a permission tag in activity to do that and which works. but the only situation it doesnt work is when i try running the second app activity(which is the one im talking about). i know it doenst run because of the permission that i set but i was just wondering is there a way to still run the main activity of the second app on its on rather then running it from another app. first app manifest file: (HowTos)