我正试图允许用户填写一些联系方式，其中之一就是联系地址。我已按照本（https://www.youtube.com/watch?v=6Trdd9EnmqY）教程进行操作，但似乎没有任何效果。
“地点自动完成”是否必须在“地图活动”中？ 另外，我对视频不了解的是应该将结果显示在哪个视图（例如ListView）上。
从Google的GitHub示例中获取的适配器类：
public class GooglePlacesAutocompleteAdapter
extends ArrayAdapter<AutocompletePrediction> implements Filterable {
private static final String TAG = "PlaceAutoCompleteAd";
private static final CharacterStyle STYLE_BOLD = new StyleSpan(Typeface.BOLD);
private ArrayList<AutocompletePrediction> mResultList;
private GoogleApiClient mGoogleApiClient;
private LatLngBounds mBounds;
private AutocompleteFilter mPlaceFilter;
public GooglePlacesAutocompleteAdapter(Context context, GoogleApiClient googleApiClient,
LatLngBounds bounds, AutocompleteFilter filter) {
super(context, android.R.layout.simple_expandable_list_item_2, android.R.id.text1);
mGoogleApiClient = googleApiClient;
mBounds = bounds;
mPlaceFilter = filter;
}
public void setBounds(LatLngBounds bounds) {
mBounds = bounds;
}
@Override
public int getCount() {
return mResultList.size();
}
@Override
public AutocompletePrediction getItem(int position) {
return mResultList.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = super.getView(position, convertView, parent);
AutocompletePrediction item = getItem(position);
TextView textView1 = (TextView) row.findViewById(android.R.id.text1);
TextView textView2 = (TextView) row.findViewById(android.R.id.text2);
textView1.setText(item.getPrimaryText(STYLE_BOLD));
textView2.setText(item.getSecondaryText(STYLE_BOLD));
return row;
}
@Override
public Filter getFilter() {
return new Filter() {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
ArrayList<AutocompletePrediction> filterData = new ArrayList<>();
if (constraint != null) {
filterData = getAutocomplete(constraint);
}
results.values = filterData;
if (filterData != null) {
results.count = filterData.size();
} else {
results.count = 0;
}
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if (results != null && results.count > 0) {
mResultList = (ArrayList<AutocompletePrediction>) results.values;
notifyDataSetChanged();
} else {
// The API did not return any results, invalidate the data set.
notifyDataSetInvalidated();
}
}
@Override
public CharSequence convertResultToString(Object resultValue) {
if (resultValue instanceof AutocompletePrediction) {
return ((AutocompletePrediction) resultValue).getFullText(null);
} else {
return super.convertResultToString(resultValue);
}
}
};
}
private ArrayList<AutocompletePrediction> getAutocomplete(CharSequence constraint) {
if (mGoogleApiClient.isConnected()) {
Log.i(TAG, "Starting autocomplete query for: " + constraint);
PendingResult<AutocompletePredictionBuffer> results =
Places.GeoDataApi
.getAutocompletePredictions(mGoogleApiClient, constraint.toString(),
mBounds, mPlaceFilter);
AutocompletePredictionBuffer autocompletePredictions = results
.await(60, TimeUnit.SECONDS);
final Status status = autocompletePredictions.getStatus();
if (!status.isSuccess()) {
Toast.makeText(getContext(), "Error contacting API: " + status.toString(),
Toast.LENGTH_SHORT).show();
Log.e(TAG, "Error getting autocomplete prediction API call: " + status.toString());
autocompletePredictions.release();
return null;
}
Log.i(TAG, "Query completed. Received " + autocompletePredictions.getCount()
+ " predictions.");
return DataBufferUtils.freezeAndClose(autocompletePredictions);
}
Log.e(TAG, "Google API client is not connected for autocomplete query.");
return null;
}
}
ContactAddActivity：-从onCreate方法调用init（）。
private void init() {
autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.locationField);
googlePlacesAutocompleteAdapter = new GooglePlacesAutocompleteAdapter(this, googleApiClient, LAT_LNG_BOUNDS, null);
autoCompleteTextView.setAdapter(googlePlacesAutocompleteAdapter);
googleApiClient = new GoogleApiClient.Builder(this)
.addApi(Places.GEO_DATA_API)
.addApi(Places.PLACE_DETECTION_API)
.enableAutoManage(this, this)
.build();
autoCompleteTextView.setOnEditorActionListener(new AutoCompleteTextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
if(actionId == EditorInfo.IME_ACTION_SEARCH
|| actionId == EditorInfo.IME_ACTION_DONE
|| keyEvent.getAction() == KeyEvent.ACTION_DOWN
|| keyEvent.getAction() == KeyEvent.KEYCODE_ENTER){
//execute our method for searching
geoLocate();
}
return false;
}
});
}
private void geoLocate(){
Log.d("MSG", "geoLocate: geolocating");
String searchString = autoCompleteTextView.getText().toString();
Geocoder geocoder = new Geocoder(ContactAddActivity.this);
List<Address> list = new ArrayList<>();
try{
list = geocoder.getFromLocationName(searchString, 1);
}catch (IOException e){
Log.e("MSG", "geoLocate: IOException: " + e.getMessage() );
}
if(list.size() > 0){
Address address = list.get(0);
Log.d("MSG", "geoLocate: found a location: " + address.toString());
//Toast.makeText(this, address.toString(), Toast.LENGTH_SHORT).show();
}
}
contact_add_activity.xml：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/addContactRelLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:padding="20dp"
tools:context=".Activities.ContactAddActivity">
<EditText
android:id="@+id/firstNameTextField"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginBottom="20dp"
android:backgroundTint="@color/colorLandingScreenFAB"
android:fontFamily="@font/cairo"
android:inputType="textCapWords"
android:hint="First Name"
android:singleLine="true" />
<EditText
android:id="@+id/lastNameTextField"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginBottom="20dp"
android:hint="Last Name"
android:singleLine="true"
android:layout_below="@id/firstNameTextField"
android:inputType="textCapWords"
android:fontFamily="@font/cairo"
android:backgroundTint="@color/colorLandingScreenFAB"/>
<EditText
android:id="@+id/emailTextField"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginBottom="20dp"
android:hint="Email Address"
android:singleLine="true"
android:layout_below="@id/lastNameTextField"
android:fontFamily="@font/cairo"
android:inputType="textEmailAddress"
android:backgroundTint="@color/colorLandingScreenFAB"/>
<EditText
android:id="@+id/phoneNumberTextField"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginBottom="20dp"
android:hint="Phone Number"
android:singleLine="true"
android:layout_below="@id/emailTextField"
android:fontFamily="@font/cairo"
android:inputType="number"
android:backgroundTint="@color/colorLandingScreenFAB"/>
<AutoCompleteTextView
android:layout_width="match_parent"
android:layout_height="60dp"
android:hint="Address"
android:layout_below="@id/phoneNumberTextField"
android:id="@+id/locationField"
android:textColor="@color/colorActionBarText"
android:fontFamily="@font/cairo"
android:backgroundTint="#00000000"
android:gravity="center_vertical"/>
<Button
android:id="@+id/addContactButton"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_below="@id/locationField"
android:layout_marginTop="30dp"
android:text="Add"
android:textColor="#ffffff"
android:textSize="18sp"
android:background="@drawable/add_contact_save_button"
android:fontFamily="@font/cairo"
android:onClick="addContact"/>
</RelativeLayout>