In Android Studio 2.3
Disable Instant Run
Settings>Build, Execution, Deployment>Instant Run
Source: comment by @Shubham A.
Edit: To Disable Instant run
In Windows:
Control + Shift + A
. instant run
and open instant run
under settings
.Enable instant run...
In Mac: I don't have a mac, so try like
Command + Shift + A
. instant run
and open instant run
under settings
.Enable instant run...