使用SearchRecentSuggestionsProvider一些predefined条款？

问题描述

我在寻找一些信息关于延长SearchRecentSuggestionsProvider，这样它会处理两种类型的建议：

I'm looking for some information on extending SearchRecentSuggestionsProvider such that it will handle two types of suggestions:

• 用户的搜索历史记录


• predefined，我想总是尽可能的建议条款

例如，当用户开始输入咕，也许他们已经搜索了咕飘之后 - 也许我也想加入谷歌，因为它在我的特殊条款名单。

For example, when a user starts typing "Goo", maybe they've searched for "Goo Gone" before - and maybe I'd also like to include "Google" since it's in my list of "special terms".

在我见我真的可以做一个非此即彼的 - 使用谷歌的code或推出自己的SQLite数据库来存储的东西。有没有办法覆盖SearchRecentSuggestionsProvider的一部分做我想要什么？

Referring to the documentation at Google I see that I can really do an either or - use Google's code or roll my own SQLite database to store things. Is there a way to override part of SearchRecentSuggestionsProvider to do what I want?

推荐答案

是的，你可以用自己的类扩展SearchRecentSuggestionsProvider。这是我写这样做的类：https://github.com/bostonbusmap/bostonbusmap/blob/master/src/boston/Bus/Map/provider/TransitContentProvider.java

Yes, you can extend SearchRecentSuggestionsProvider with your own class. This is the class I wrote to do this: https://github.com/bostonbusmap/bostonbusmap/blob/master/src/boston/Bus/Map/provider/TransitContentProvider.java

package boston.Bus.Map.provider;

import boston.Bus.Map.data.RoutePool;
import boston.Bus.Map.main.Main;
import boston.Bus.Map.provider.DatabaseContentProvider.DatabaseAgent;
import boston.Bus.Map.transit.TransitSystem;
import android.app.SearchManager;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.SearchRecentSuggestionsProvider;
import android.content.UriMatcher;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;

public class TransitContentProvider extends SearchRecentSuggestionsProvider {

    private UriMatcher matcher;

    public static final String AUTHORITY = "com.bostonbusmap.transitprovider";
    public static final int MODE = SearchRecentSuggestionsProvider.DATABASE_MODE_QUERIES;


    private static final int SUGGESTIONS_CODE = 5;

    public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY);

    public TransitContentProvider()
    {
        matcher = new UriMatcher(UriMatcher.NO_MATCH);

        matcher.addURI(AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY, SUGGESTIONS_CODE);
        setupSuggestions(AUTHORITY, MODE);
    }

    @Override
    public boolean onCreate() {
        boolean create = super.onCreate();
        return create;
    }

    @Override
    public Cursor query(Uri uri, String[] projection, String selection,
            String[] selectionArgs, String sortOrder)
    {
        int code = matcher.match(uri);
        switch (code)
        {
        case SUGGESTIONS_CODE:
            if (selectionArgs == null || selectionArgs.length == 0 || selectionArgs[0].trim().length() == 0)
            {
                return super.query(uri, projection, selection, selectionArgs, sortOrder);
            }
            else
            {
                ContentResolver resolver = getContext().getContentResolver();
                return DatabaseAgent.getCursorForSearch(resolver, selectionArgs[0]);
            }
        default:
            return super.query(uri, projection, selection, selectionArgs, sortOrder);
        }
    }
}

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