Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application

Question

when I tried to update my applcation with new version that has same signature as previous one, shows above error.

What I am missing?

Answer 1

To Install

adb install -r exampleApp.apk

(The -r makes it replace the existing copy, add an -s if installing on an emulator)

Make sure the app is signed the same and is the same debug/release variant

Bonus

I set up an alias in my ~/.bash_profile, to make it a 2char command.

alias bi="gradlew && adb install -r exampleApp.apk"

(Short for Build and Install)