自动完成文本视图谷歌放置 API 描述 -> place_id
Autocomplete textview google places api description -> place_id
我正在使用Google的自动完成地点来获取位置的预测。现在,当他们单击其中一个预测时,我想获得place_id但我不知道该怎么做?
这是我的 PlcaesAutoCompleteAdapter:
public class PlacesAutoCompleteAdapter extends ArrayAdapter<String> implements Filterable {
private ArrayList<String> resultList;
public PlacesAutoCompleteAdapter(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 = autocomplete(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;
}
private static final String PLACES_API_BASE = "https://maps.googleapis.com/maps/api/place";
private static final String TYPE_AUTOCOMPLETE = "/autocomplete";
private static final String OUT_JSON = "/json";
private static final String API_KEY = "";
private static final String LOG_TAG = "ExampleApp";
private ArrayList<String> autocomplete(String input) {
ArrayList<String> resultList = null;
HttpURLConnection conn = null;
StringBuilder jsonResults = new StringBuilder();
try {
StringBuilder sb = new StringBuilder(PLACES_API_BASE + TYPE_AUTOCOMPLETE + OUT_JSON);
sb.append("?key=" + API_KEY);
sb.append("&input=" + URLEncoder.encode(input, "utf8"));
URL url = new URL(sb.toString());
conn = (HttpURLConnection) url.openConnection();
InputStreamReader in = new InputStreamReader(conn.getInputStream());
// Load the results into a StringBuilder
int read;
char[] buff = new char[1024];
while ((read = in.read(buff)) != -1) {
jsonResults.append(buff, 0, read);
}
} catch (MalformedURLException e) {
Log.e(LOG_TAG, "Error processing Places API URL", e);
return resultList;
} catch (IOException e) {
Log.e(LOG_TAG, "Error connecting to Places API", e);
return resultList;
} finally {
if (conn != null) {
conn.disconnect();
}
}
try {
// Create a JSON object hierarchy from the results
JSONObject jsonObj = new JSONObject(jsonResults.toString());
JSONArray predsJsonArray = jsonObj.getJSONArray("predictions");
// Extract the Place descriptions from the results
resultList = new ArrayList<String>(predsJsonArray.length());
for (int i = 0; i < predsJsonArray.length(); i++) {
resultList.add(predsJsonArray.getJSONObject(i).getString("description")+ "," + predsJsonArray.getJSONObject(i).getString("place_id") );
}
} catch (JSONException e) {
Log.e(LOG_TAG, "Cannot process JSON results", e);
}
return resultList;
}
}
现在我在我的主要活动中这样称呼它:
autoCompView = (AutoCompleteTextView) getActivity().findViewById(R.id.txtEventLocation);
autoCompView.setAdapter(new PlacesAutoCompleteAdapter(getActivity(), R.layout.places_autocomplete_item));
//When click on autocomplete suggestion
autoCompView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> listView, View view,
int position, long id) {
String str = (String) listView.getItemAtPosition(position);
Toast.makeText(getActivity(), str, Toast.LENGTH_SHORT).show();
}
});
当他们点击它时,我想得到place_id而不是描述。所以我展示了描述,他们可以点击它,但我想得到它的place_id..
您可以将resultList
更改为ArrayList<HashMap<String, String>>
,以便可以存储地点 ID 和描述。
更改代码中的这些行
resultList = new ArrayList<String>(predsJsonArray.length());
for (int i = 0; i < predsJsonArray.length(); i++) {
resultList.add(predsJsonArray.getJSONObject(i).getString("description")+ "," + predsJsonArray.getJSONObject(i).getString("place_id") );
}
到这些行:
resultList = new ArrayList<HashMap<String, String>>(predsJsonArray.lengtgh());
for (int i = 0; i < predsJsonArray.length();, i++) {
HashMap<String, String> place = new HashMap<String, String>();
String description = predsJsonArray.getJSONObject(i).getString("description");
String placeId = predsJsonArray.getJSONObject(i).getString("place_id");
place.put("description", description);
place.put("place_id", placeId);
resultList.add(place);
}
同时将public class PlacesAutoCompleteAdapter extends ArrayAdapter<String>
更改为public class PlacesAutoCompleteAdapter extends ArrayAdapter<HashMap<String, String>>
此外,更改您的
@Override
public String getItem(int index) {
return resultList.get(index);
}
到这些行:
@Override
Public HashMap<String, String> getItem(int index) {
return resultList.get(index);
}
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