1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.provider; 18 19 import android.content.ComponentName; 20 import android.content.ContentResolver; 21 import android.database.Cursor; 22 import android.net.Uri; 23 24 import java.util.List; 25 26 /** 27 * The Applications provider gives information about installed applications. 28 * 29 * @hide Only used by ApplicationsProvider so far. 30 */ 31 public class Applications { 32 33 /** 34 * The content authority for this provider. 35 */ 36 public static final String AUTHORITY = "applications"; 37 38 /** 39 * The content:// style URL for this provider 40 */ 41 public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY); 42 43 /** 44 * The content path for application component URIs. 45 */ 46 public static final String APPLICATION_PATH = "applications"; 47 48 /** 49 * The content path for application search. 50 */ 51 public static final String SEARCH_PATH = "search"; 52 53 private static final String APPLICATION_SUB_TYPE = "vnd.android.application"; 54 55 /** 56 * The MIME type for a single application item. 57 */ 58 public static final String APPLICATION_ITEM_TYPE = 59 ContentResolver.CURSOR_ITEM_BASE_TYPE + "/" + APPLICATION_SUB_TYPE; 60 61 /** 62 * The MIME type for a list of application items. 63 */ 64 public static final String APPLICATION_DIR_TYPE = 65 ContentResolver.CURSOR_DIR_BASE_TYPE + "/" + APPLICATION_SUB_TYPE; 66 67 /** 68 * no public constructor since this is a utility class 69 */ Applications()70 private Applications() {} 71 72 /** 73 * Gets a cursor with application search results. 74 * See {@link ApplicationColumns} for the columns available in the returned cursor. 75 */ search(ContentResolver resolver, String query)76 public static Cursor search(ContentResolver resolver, String query) { 77 Uri searchUri = CONTENT_URI.buildUpon().appendPath(SEARCH_PATH).appendPath(query).build(); 78 return resolver.query(searchUri, null, null, null, null); 79 } 80 81 /** 82 * Gets the application component name from an application URI. 83 * 84 * @param appUri A URI of the form 85 * "content://applications/applications/<packageName>/<className>". 86 * @return The component name for the application, or 87 * <code>null</code> if the given URI was <code>null</code> 88 * or malformed. 89 */ uriToComponentName(Uri appUri)90 public static ComponentName uriToComponentName(Uri appUri) { 91 if (appUri == null) return null; 92 if (!ContentResolver.SCHEME_CONTENT.equals(appUri.getScheme())) return null; 93 if (!AUTHORITY.equals(appUri.getAuthority())) return null; 94 List<String> pathSegments = appUri.getPathSegments(); 95 if (pathSegments.size() != 3) return null; 96 if (!APPLICATION_PATH.equals(pathSegments.get(0))) return null; 97 String packageName = pathSegments.get(1); 98 String name = pathSegments.get(2); 99 return new ComponentName(packageName, name); 100 } 101 102 /** 103 * Gets the URI for an application component. 104 * 105 * @param packageName The name of the application's package. 106 * @param className The class name of the application. 107 * @return A URI of the form 108 * "content://applications/applications/<packageName>/<className>". 109 */ componentNameToUri(String packageName, String className)110 public static Uri componentNameToUri(String packageName, String className) { 111 return Applications.CONTENT_URI.buildUpon() 112 .appendEncodedPath(APPLICATION_PATH) 113 .appendPath(packageName) 114 .appendPath(className) 115 .build(); 116 } 117 118 /** 119 * The columns in application cursors, like those returned by 120 * {@link Applications#search(ContentResolver, String)}. 121 */ 122 public interface ApplicationColumns extends BaseColumns { 123 public static final String NAME = "name"; 124 public static final String ICON = "icon"; 125 public static final String URI = "uri"; 126 } 127 } 128