Getting error "The package appears to be corrupt" while installing apk file
After searching a lot I found a solution:
Go to Build-> Build Apk(s).
After creating apk you will see a dialog as below.
Click on locate and install it in your phone
Enjoy
As I got this case at my own and the answers here didn't help me, my situation was because of I downgraded the targetSdkVersion in gradle app module file from 24 to 22 for some reason, and apparently the apk doesn't accept another one with downgraded targetSdkVersion to be installed over it.
So, once I changed it back to 24 the error disappeared and app installed correctly.