android利用数据库实现搜索联想功能.doc

androidgoogleaa * * android onSearchRequested()ui* * public class SearchProvider extends ContentProvider Overridepublic int delete(Uri uri, String selection, String selectionArgs) return 0;Overridepublic String getType(Uri uri) return null;Overridepublic Uri insert(Uri uri, ContentValues values) return null;Overridepublic boolean onCreate() / SearchUtil.getInstance().ensureLoaded();return true;Overridepublic Cursor query(Uri uri, String projection, String selection,String selectionArgs, String sortOrder) String query = null;if (uri.getPathSegments().size() 1) query = uri.getLastPathSegment().toLowerCase();return getSuggestions(query);private Cursor getSuggestions(String query) String processedQuery = query = null ? : query.toLowerCase();List words = SearchUtil.getInstance().getMatches(processedQuery);MatrixCursor cursor = new MatrixCursor(COLUMNS);long id = 0;for (SearchUtil.Word word : words) cursor.addRow(columnValuesOfWord(id+, word);return cursor;private Object columnValuesOfWord(long id, SearchUtil.Word word) return new Object id, / _idword.word, / text1word.definition, / text2word.word, / intent_data (included when clicking on item);private static final String COLUMNS = _id,SearchManager.SUGGEST_COLUMN_TEXT_1,SearchManager.SUGGEST_COLUMN_TEXT_2,SearchManager.SUGGEST_COLUMN_INTENT_DATA,/ intenter;Overridepublic int update(Uri uri, ContentValues values, String selection,String selectionArgs) return 0;resxmlsearchable.xmlpublic void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState);Intent intent = this.getIntent();setContentView(R.layout.main);if (Intent.ACTION_VIEW.equals(intent.getAction() SearchUtil.Word theWord = SearchUtil.getInstance().getMatches(intent.getDataString().trim().toLowerCase().get(0);launchWord(theWord);finish(); else Button button = (Button) findViewById(R.id.button);button.setOnTouchListener(new OnTouchListener() Overridepublic boolean onTouch(View v, MotionEvent event) onSearchRequested();return false;);private void launchWord(SearchUtil.Word pavilion) Intent next = new Intent();next.setClass(this, ResultActivty.class);Bundle bundle = new Bu