How can I make the `PlaceAutocompleteFragment` resolved?

For uses of PlaceAutocompleteFragment we need to add one lib in gradle add this

implementation 'com.google.android.gms:play-services-places:16.0.0'

in your gradle of Android Application.I have checked this in my Android studio. Please let me know if your problem is solved.

Check version (16.0.0 at the time of writing) of play-services here.
(From the comment below)

Just change your compile library in gradle from "locations" to "places"

for example

change

compile 'com.google.android.gms:play-services-location:"yourversion"'

to

compile 'com.google.android.gms:play-services-places:"yourversion"'

You need to add one lib in gradle add this

compile 'com.google.android.gms:play-services-location:10.0.1'

use same version "10.0.1" or what you have currenty in your gradle in both services.

Example:-

compile 'com.google.android.gms:play-services-maps:10.0.1'
compile 'com.google.android.gms:play-services-location:10.0.1'