SuggestionProviderpublic class SuggestionProvider extends android.content.ContentProvider | Use network-based Google Suggests to provide search suggestions.
Future: Merge live suggestions with saved recent queries |
| Fields Summary |
|---|
| public static final android.net.Uri | CONTENT_URI | | private static final String | USER_AGENT | | private String | mSuggestUri | | private static final int | HTTP_TIMEOUT_MS | | private static final String | HTTP_TIMEOUT | | private static final String | LOG_TAG | | private static final String[] | COLUMNS | | private HttpClient | mHttpClient |
| Methods Summary |
|---|
| public int | delete(android.net.Uri uri, java.lang.String selection, java.lang.String[] selectionArgs)
throw new UnsupportedOperationException();
| | public java.lang.String | getType(android.net.Uri uri)This will always return {@link SearchManager#SUGGEST_MIME_TYPE} as this
provider is purely to provide suggestions.
return SearchManager.SUGGEST_MIME_TYPE;
| | public android.net.Uri | insert(android.net.Uri uri, android.content.ContentValues values)
throw new UnsupportedOperationException();
| | private static com.android.internal.database.ArrayListCursor | makeEmptyCursor()
return new ArrayListCursor(COLUMNS, new ArrayList<ArrayList>());
| | public boolean | onCreate()
mHttpClient = new GoogleHttpClient(getContext().getContentResolver(),
USER_AGENT, false /* not gzip capable */);
HttpParams params = mHttpClient.getParams();
params.setLongParameter(HTTP_TIMEOUT, HTTP_TIMEOUT_MS);
// NOTE: Do not look up the resource here; Localization changes may not have completed
// yet (e.g. we may still be reading the SIM card).
mSuggestUri = null;
return true;
| | public android.database.Cursor | query(android.net.Uri uri, java.lang.String[] projection, java.lang.String selection, java.lang.String[] selectionArgs, java.lang.String sortOrder)Queries for a given search term and returns a cursor containing
suggestions ordered by best match.
String query = selectionArgs[0];
if (TextUtils.isEmpty(query)) {
/* Can't pass back null, things blow up */
return makeEmptyCursor();
}
try {
query = URLEncoder.encode(query, "UTF-8");
// NOTE: This code uses resources to optionally select the search Uri, based on the
// MCC value from the SIM. iThe default string will most likely be fine. It is
// paramerterized to accept info from the Locale, the language code is the first
// parameter (%1$s) and the country code is the second (%2$s). This code *must*
// function in the same way as a similar lookup in
// com.android.browser.BrowserActivity#onCreate(). If you change
// either of these functions, change them both. (The same is true for the underlying
// resource strings, which are stored in mcc-specific xml files.)
if (mSuggestUri == null) {
Locale l = Locale.getDefault();
mSuggestUri = getContext().getResources().getString(R.string.google_search_base,
l.getLanguage(),
l.getCountry().toLowerCase())
+ "json=true&q=";
}
HttpPost method = new HttpPost(mSuggestUri + query);
StringEntity content = new StringEntity("");
method.setEntity(content);
HttpResponse response = mHttpClient.execute(method);
if (response.getStatusLine().getStatusCode() == 200) {
/* Goto http://www.google.com/complete/search?json=true&q=foo
* to see what the data format looks like. It's basically a json
* array containing 4 other arrays. We only care about the middle
* 2 which contain the suggestions and their popularity.
*/
JSONArray results = new JSONArray(EntityUtils.toString(response.getEntity()));
JSONArray suggestions = results.getJSONArray(1);
JSONArray popularity = results.getJSONArray(2);
return new SuggestionsCursor(suggestions, popularity);
}
} catch (UnsupportedEncodingException e) {
Log.w(LOG_TAG, "Error", e);
} catch (IOException e) {
Log.w(LOG_TAG, "Error", e);
} catch (JSONException e) {
Log.w(LOG_TAG, "Error", e);
}
return makeEmptyCursor();
| | public int | update(android.net.Uri uri, android.content.ContentValues values, java.lang.String selection, java.lang.String[] selectionArgs)
throw new UnsupportedOperationException();
|
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