Why does Android Studio not immediately pick up code changes (only after reinstalling apk)?

Question

Android

Sometimes after changing the code in Android Studio (for example, I will change the output of Log.d ) and running it on a smartphone or emulator, the application does not seem to receive my code changes ... The output of the log in the "Android monitor" has not changed (although I changed Lod .d).
ONLY deleting the application and restarting it helps.
Now I've wasted half a day...

Answer 1

I had such a jamb when I added renaming files in the gradle. The application was assembled, renamed, and the old version of the apk was uploaded. Maybe you have something wrong with the build.gradle file?

Answer 2

If a new studio - then there may be a problem in Instant Run.
Disabled in the studio settings. The thing is nice, but how else do you need to figure it out so that there are no such sticking