128 lines
4.3 KiB
Java
128 lines
4.3 KiB
Java
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.provider;
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import android.content.ComponentName;
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import android.content.ContentResolver;
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import android.database.Cursor;
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import android.net.Uri;
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import java.util.List;
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/**
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* The Applications provider gives information about installed applications.
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*
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* @hide Only used by ApplicationsProvider so far.
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*/
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public class Applications {
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/**
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* The content authority for this provider.
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*/
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public static final String AUTHORITY = "applications";
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/**
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* The content:// style URL for this provider
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*/
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public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY);
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/**
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* The content path for application component URIs.
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*/
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public static final String APPLICATION_PATH = "applications";
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/**
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* The content path for application search.
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*/
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public static final String SEARCH_PATH = "search";
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private static final String APPLICATION_SUB_TYPE = "vnd.android.application";
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/**
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* The MIME type for a single application item.
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*/
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public static final String APPLICATION_ITEM_TYPE =
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ContentResolver.CURSOR_ITEM_BASE_TYPE + "/" + APPLICATION_SUB_TYPE;
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/**
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* The MIME type for a list of application items.
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*/
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public static final String APPLICATION_DIR_TYPE =
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ContentResolver.CURSOR_DIR_BASE_TYPE + "/" + APPLICATION_SUB_TYPE;
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/**
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* no public constructor since this is a utility class
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*/
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private Applications() {}
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/**
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* Gets a cursor with application search results.
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* See {@link ApplicationColumns} for the columns available in the returned cursor.
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*/
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public static Cursor search(ContentResolver resolver, String query) {
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Uri searchUri = CONTENT_URI.buildUpon().appendPath(SEARCH_PATH).appendPath(query).build();
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return resolver.query(searchUri, null, null, null, null);
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}
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/**
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* Gets the application component name from an application URI.
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*
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* @param appUri A URI of the form
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* "content://applications/applications/<packageName>/<className>".
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* @return The component name for the application, or
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* <code>null</code> if the given URI was <code>null</code>
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* or malformed.
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*/
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public static ComponentName uriToComponentName(Uri appUri) {
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if (appUri == null) return null;
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if (!ContentResolver.SCHEME_CONTENT.equals(appUri.getScheme())) return null;
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if (!AUTHORITY.equals(appUri.getAuthority())) return null;
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List<String> pathSegments = appUri.getPathSegments();
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if (pathSegments.size() != 3) return null;
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if (!APPLICATION_PATH.equals(pathSegments.get(0))) return null;
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String packageName = pathSegments.get(1);
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String name = pathSegments.get(2);
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return new ComponentName(packageName, name);
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}
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/**
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* Gets the URI for an application component.
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*
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* @param packageName The name of the application's package.
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* @param className The class name of the application.
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* @return A URI of the form
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* "content://applications/applications/<packageName>/<className>".
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*/
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public static Uri componentNameToUri(String packageName, String className) {
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return Applications.CONTENT_URI.buildUpon()
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.appendEncodedPath(APPLICATION_PATH)
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.appendPath(packageName)
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.appendPath(className)
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.build();
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}
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/**
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* The columns in application cursors, like those returned by
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* {@link Applications#search(ContentResolver, String)}.
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*/
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public interface ApplicationColumns extends BaseColumns {
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public static final String NAME = "name";
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public static final String ICON = "icon";
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public static final String URI = "uri";
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}
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}
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