How to Implement PlaceAutocompleteFragment and PlaceAutocompleteActivity to get Place details

First of all need to API key and Enable Google Place API to search and get place details.
Add your API key to your app manifest ,need to replacing YOUR_API_KEY with your own API key:

<application>
  ...
  <meta-data
      android:name="com.google.android.geo.API_KEY"
      android:value="YOUR_API_KEY"/>
</application>

1) PlaceAutocompleteFragment

Xml:

<fragment
  android:id="@+id/place_autocomplete_fragment"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment"
  />

Java:

PlaceAutocompleteFragment autocompleteFragment = (PlaceAutocompleteFragment)
            getFragmentManager().findFragmentById(R.id.place_autocomplete_fragment);

/*
* The following code example shows setting an AutocompleteFilter on a PlaceAutocompleteFragment to
* set a filter returning only results with a precise address.
*/
AutocompleteFilter typeFilter = new AutocompleteFilter.Builder()
        .setTypeFilter(AutocompleteFilter.TYPE_FILTER_ADDRESS)
        .build();
autocompleteFragment.setFilter(typeFilter);

autocompleteFragment.setOnPlaceSelectedListener(new PlaceSelectionListener() {
    @Override
    public void onPlaceSelected(Place place) {
        // TODO: Get info about the selected place.
        Log.i(TAG, "Place: " + place.getName());//get place details here
    }

    @Override
    public void onError(Status status) {
        // TODO: Handle the error.
        Log.i(TAG, "An error occurred: " + status);
    }
});

Output:

2) PlaceAutocompleteActivity

private void callPlaceAutocompleteActivityIntent() {
    try {
        Intent intent =
                new PlaceAutocomplete.IntentBuilder(PlaceAutocomplete.MODE_FULLSCREEN)
                        .build(this);
        startActivityForResult(intent, PLACE_AUTOCOMPLETE_REQUEST_CODE);
//PLACE_AUTOCOMPLETE_REQUEST_CODE is integer for request code
    } catch (GooglePlayServicesRepairableException | GooglePlayServicesNotAvailableException e) {
        // TODO: Handle the error.
    }

}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    //autocompleteFragment.onActivityResult(requestCode, resultCode, data);
    if (requestCode == PLACE_AUTOCOMPLETE_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            Place place = PlaceAutocomplete.getPlace(this, data);
            Log.i(TAG, "Place:" + place.toString());
        } else if (resultCode == PlaceAutocomplete.RESULT_ERROR) {
            Status status = PlaceAutocomplete.getStatus(this, data);
            Log.i(TAG, status.getStatusMessage());
        } else if (resultCode == RESULT_CANCELED) {

        }
    }
}

Output:

Hope its help.

Edit: change requestCode == RESULT_CANCELED to resultCode == RESULT_CANCELED