Android AutoCompleteTextView Geocoder

main_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <AutoCompleteTextView
        android:id="@+id/text1"
        android:layout_width="280dp"
        android:layout_height="wrap_content"        
        android:textSize="15dp"/>

</LinearLayout>

MainActivity.java

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AutoCompleteTextView text1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_layout); text1 = (AutoCompleteTextView ) findViewById(R.id.text1); text1.setThreshold(3); text1.setAdapter(new CustomAdapter(this,android.R.layout.simple_list_item_1)); } private ArrayList<String> getAddressInfo(String locationName) { ArrayList<String> list = new ArrayList<>(); Geocoder geocoder = new Geocoder(this, Locale.getDefault()); try { List<Address> a = geocoder.getFromLocationName(locationName, 5); for (int i = 0; i < a.size(); i++) { String city = a.get(i).getLocality(); String country = a.get(i).getCountryName(); String address = a.get(i).getAddressLine(0); list.add(address +(city!=null?", " + city :"") +(country!=null? ", " + country:"") ); } } catch (IOException e) { e.printStackTrace(); } return list; } class CustomAdapter extends ArrayAdapter implements Filterable { private ArrayList<String> resultList; public CustomAdapter(Context context, int textViewResourceId) { super(context, textViewResourceId); } @Override public int getCount() { return resultList.size(); } @Override public String getItem(int index) { return resultList.get(index); } @Override public Filter getFilter() { Filter filter = new Filter() { @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults filterResults = new FilterResults(); if (constraint != null) { // Retrieve the autocomplete results. resultList = getAddressInfo(constraint.toString()); // Assign the data to the FilterResults filterResults.values = resultList; filterResults.count = resultList.size(); } return filterResults; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { if (results != null && results.count > 0) { notifyDataSetChanged(); } else { notifyDataSetInvalidated(); } } }; return filter; } }