Android Open Source - ExpertAndroid Suggest Url Provider

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License

The source code is released under:
MIT License
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Java Source Code

package com.iuriio.demos.expertandroid.ch11searchprovider;
//  www  .j a  va 2 s . c o m
import android.app.SearchManager;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.net.Uri;
import android.provider.BaseColumns;

/**
 * Created by iuriio on 10/29/13.
 */
public class SuggestUrlProvider extends ContentProvider {
    public static String AUTHORITY = "com.iuriio.demos.expertandroid.suggesturlprovider";

    private static final int SEARCH_SUGGEST = 0;
    private static final int SHORTCUT_REFRESH = 1;

    private static final String[] COLUMNS = {
            "_id",  // must include this column
            SearchManager.SUGGEST_COLUMN_TEXT_1,
            SearchManager.SUGGEST_COLUMN_TEXT_2,
            SearchManager.SUGGEST_COLUMN_INTENT_DATA,
            SearchManager.SUGGEST_COLUMN_INTENT_ACTION,
            SearchManager.SUGGEST_COLUMN_SHORTCUT_ID
    };

    private UriMatcher matcher;

    private static UriMatcher buildUrlMatcher(String authority) {
        UriMatcher matcher = new UriMatcher(UriMatcher.NO_MATCH);
        matcher.addURI(authority, SearchManager.SUGGEST_URI_PATH_QUERY, SEARCH_SUGGEST);
        matcher.addURI(authority, SearchManager.SUGGEST_URI_PATH_QUERY + "/*", SEARCH_SUGGEST);
        matcher.addURI(authority, SearchManager.SUGGEST_URI_PATH_SHORTCUT, SHORTCUT_REFRESH);
        matcher.addURI(authority, SearchManager.SUGGEST_URI_PATH_SHORTCUT + "/*", SHORTCUT_REFRESH);
        return matcher;
    }

    @Override
    public boolean onCreate() {
        this.matcher = buildUrlMatcher(AUTHORITY);
        return true;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
        final String query = selectionArgs[0];

        switch (this.matcher.match(uri)) {
            case SEARCH_SUGGEST:
                return this.getSuggestions(query);
            case SHORTCUT_REFRESH:
                return null;
            default:
                throw new IllegalArgumentException("Unknown URL: " + uri);
        }
    }

    private Cursor getSuggestions(String query) {
        if (query == null) {
            return null;
        }

        String word = this.getWord(query);
        if (word == null) {
            return null;
        }

        MatrixCursor cursor = new MatrixCursor(COLUMNS);
        cursor.addRow(this.createRow1(word));
        cursor.addRow(this.createRow2(word));

        return cursor;
    }

    private Object[] createRow1(String word) {
        return this.columnValuesOfQuery(
                1,
                word,
                "android.intent.action.VIEW",
                "http://www.thefreedictionary.com/" + word,
                "Lookup in feedictionary.com for ",
                word);
    }

    private Object[] createRow2(String word) {
        return this.columnValuesOfQuery(
                2,
                word,
                "android.intent.action.VIEW",
                "http://www.google.com/search?hl=en&source=hp&q=define%3A" + word,
                "Lookup in Google for ",
                word);
    }

    private Object[] columnValuesOfQuery(int id, String word, String intentAction, String url, String text1, String text2) {
        return new String[] {
                String.valueOf(id),
                text1,
                text2,
                url,
                intentAction,
                SearchManager.SUGGEST_NEVER_MAKE_SHORTCUT
        };
    }

    private Cursor refreshShortcut(String shortcutId, String[] projection) {
        return null;
    }

    private String getWord(String query) {
        int dotIndex = query.indexOf('.');
        if (dotIndex < 0) {
            return null;
        }
        return query.substring(0, dotIndex);
    }

    @Override
    public String getType(Uri uri) {
        switch (this.matcher.match(uri)) {
            case SEARCH_SUGGEST:
                return SearchManager.SUGGEST_MIME_TYPE;
            case SHORTCUT_REFRESH:
                return SearchManager.SHORTCUT_MIME_TYPE;
            default:
                throw new IllegalArgumentException("Unknown URL: " + uri);
        }
    }

    @Override
    public Uri insert(Uri uri, ContentValues values) {
        throw new UnsupportedOperationException();
    }

    @Override
    public int delete(Uri uri, String selection, String[] selectionArgs) {
        throw new UnsupportedOperationException();
    }

    @Override
    public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
        throw new UnsupportedOperationException();
    }
}
Java Source Code List
