Automcomplete names and emails in keyserver tab

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/ContactHelper.java

@@ -234,6 +234,24 @@ public class ContactHelper {
         return new ArrayList<String>(mails);
     }
 
+    public static List<String> getContactNames(Context context) {
+        ContentResolver resolver = context.getContentResolver();
+        Cursor cursor = resolver.query(ContactsContract.Contacts.CONTENT_URI,
+                new String[]{ContactsContract.Contacts.DISPLAY_NAME},
+                null, null, null);
+        if (cursor == null) return null;
+
+        Set<String> names = new HashSet<String>();
+        while (cursor.moveToNext()) {
+            String name = cursor.getString(0);
+            if (name != null) {
+                names.add(name);
+            }
+        }
+        cursor.close();
+        return new ArrayList<String>(names);
+    }
+
     public static Uri dataUriFromContactUri(Context context, Uri contactUri) {
         Cursor contactMasterKey = context.getContentResolver().query(contactUri,
                 new String[]{ContactsContract.Data.DATA2}, null, null, null, null);

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/ImportKeysServerFragment.java

@@ -29,15 +29,19 @@ import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.ArrayAdapter;
+import android.widget.AutoCompleteTextView;
 import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.TextView;
 
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.helper.ContactHelper;
 import org.sufficientlysecure.keychain.helper.Preferences;
 import org.sufficientlysecure.keychain.util.Log;
 
+import java.util.List;
+
 public class ImportKeysServerFragment extends Fragment {
     public static final String ARG_QUERY = "query";
     public static final String ARG_KEYSERVER = "keyserver";
@@ -46,7 +50,7 @@ public class ImportKeysServerFragment extends Fragment {
     private ImportKeysActivity mImportActivity;
 
     private View mSearchButton;
-    private EditText mQueryEditText;
+    private AutoCompleteTextView mQueryEditText;
     private View mConfigButton;
     private View mConfigLayout;
     private Spinner mServerSpinner;
@@ -75,7 +79,7 @@ public class ImportKeysServerFragment extends Fragment {
         View view = inflater.inflate(R.layout.import_keys_server_fragment, container, false);
 
         mSearchButton = view.findViewById(R.id.import_server_search);
-        mQueryEditText = (EditText) view.findViewById(R.id.import_server_query);
+        mQueryEditText = (AutoCompleteTextView) view.findViewById(R.id.import_server_query);
         mConfigButton = view.findViewById(R.id.import_server_config_button);
         mConfigLayout = view.findViewById(R.id.import_server_config);
         mServerSpinner = (Spinner) view.findViewById(R.id.import_server_spinner);
@@ -93,6 +97,16 @@ public class ImportKeysServerFragment extends Fragment {
             mSearchButton.setEnabled(false);
         }
 
+        List<String> namesAndEmails = ContactHelper.getContactNames(getActivity());
+        namesAndEmails.addAll(ContactHelper.getContactMails(getActivity()));
+        mQueryEditText.setThreshold(3);
+        mQueryEditText.setAdapter(
+                new ArrayAdapter<String>
+                        (getActivity(), android.R.layout.simple_spinner_dropdown_item,
+                                namesAndEmails
+                        )
+        );
+
         mSearchButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {

OpenKeychain/src/main/res/layout/import_keys_server_fragment.xml

@@ -10,7 +10,7 @@
         android:layout_height="?android:attr/listPreferredItemHeight"
         android:orientation="horizontal">
 
-        <EditText
+        <AutoCompleteTextView
             android:id="@+id/import_server_query"
             android:layout_width="0dip"
             android:layout_height="wrap_content"