LoaderManager.java revision 180202f2211d8c6bbb7a7057e61dafc90fe31930
1c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn/* 2c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * Copyright (C) 2010 The Android Open Source Project 3c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * 4c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * Licensed under the Apache License, Version 2.0 (the "License"); 5c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * you may not use this file except in compliance with the License. 6c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * You may obtain a copy of the License at 7c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * 8c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * http://www.apache.org/licenses/LICENSE-2.0 9c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * 10c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * Unless required by applicable law or agreed to in writing, software 11c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * distributed under the License is distributed on an "AS IS" BASIS, 12c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * See the License for the specific language governing permissions and 14c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * limitations under the License. 15c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn */ 16c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 17c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackbornpackage android.app; 18c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 19c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackbornimport android.content.Loader; 20c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackbornimport android.os.Bundle; 21a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackbornimport android.util.DebugUtils; 225e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackbornimport android.util.Log; 23c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackbornimport android.util.SparseArray; 24c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 2530d7189067524000c738c188c4ff91f84f474d25Dianne Hackbornimport java.io.FileDescriptor; 2630d7189067524000c738c188c4ff91f84f474d25Dianne Hackbornimport java.io.PrintWriter; 270e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackbornimport java.lang.reflect.Modifier; 2830d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn 29c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn/** 304911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * Interface associated with an {@link Activity} or {@link Fragment} for managing 31c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * one or more {@link android.content.Loader} instances associated with it. This 32c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * helps an application manage longer-running operations in conjunction with the 33c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * Activity or Fragment lifecycle; the most common use of this is with a 34c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * {@link android.content.CursorLoader}, however applications are free to write 35c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * their own loaders for loading other types of data. 36c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 37f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * While the LoaderManager API was introduced in 38f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * {@link android.os.Build.VERSION_CODES#HONEYCOMB}, a version of the API 397871badd5d4d29d80207e9cc09a0681f26a151d0Dianne Hackborn * at is also available for use on older platforms through 407871badd5d4d29d80207e9cc09a0681f26a151d0Dianne Hackborn * {@link android.support.v4.app.FragmentActivity}. See the blog post 41f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * <a href="http://android-developers.blogspot.com/2011/03/fragments-for-all.html"> 42f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * Fragments For All</a> for more details. 43f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * 44c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * <p>As an example, here is the full implementation of a {@link Fragment} 45c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * that displays a {@link android.widget.ListView} containing the results of 46c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * a query against the contacts content provider. It uses a 47c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * {@link android.content.CursorLoader} to manage the query on the provider. 48c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 49f9dd34f4d3203fd50363b3b0247c5d0db6fe2c8fDianne Hackborn * {@sample development/samples/ApiDemos/src/com/example/android/apis/app/LoaderCursor.java 50c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * fragment_cursor} 51b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * 52b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * <div class="special reference"> 53b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * <h3>Developer Guides</h3> 54b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * <p>For more information about using loaders, read the 55b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * <a href="{@docRoot}guide/topics/fundamentals/loaders.html">Loaders</a> developer guide.</p> 56b54e7a3d9f60ac605f404f9eb3c5e92ca51bbd23Joe Fernandez * </div> 57c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn */ 58ab36acb39941ce981dddda9f9cf4d2d23a56fd26Dianne Hackbornpublic abstract class LoaderManager { 59c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn /** 60c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn * Callback interface for a client to interact with the manager. 61c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn */ 62c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn public interface LoaderCallbacks<D> { 634911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn /** 644911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * Instantiate and return a new Loader for the given ID. 654911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * 664911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * @param id The ID whose loader is to be created. 674911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * @param args Any arguments supplied by the caller. 684911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * @return Return a new Loader instance that is ready to start loading. 694911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 70c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn public Loader<D> onCreateLoader(int id, Bundle args); 714911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 724911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn /** 73fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn * Called when a previously created loader has finished its load. Note 74fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn * that normally an application is <em>not</em> allowed to commit fragment 75fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn * transactions while in this call, since it can happen after an 7648e7b458694acdf3a4fc58e62437f1dbc4f29d83Dianne Hackborn * activity's state is saved. See {@link FragmentManager#beginTransaction() 77fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn * FragmentManager.openTransaction()} for further discussion on this. 78fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn * 79c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * <p>This function is guaranteed to be called prior to the release of 80c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * the last data that was supplied for this Loader. At this point 81c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * you should remove all use of the old data (since it will be released 82c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * soon), but should not do your own release of the data since its Loader 83c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * owns it and will take care of that. The Loader will take care of 84c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * management of its data so you don't have to. In particular: 85c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 86c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * <ul> 87c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * <li> <p>The Loader will monitor for changes to the data, and report 88c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * them to you through new calls here. You should not monitor the 89c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * data yourself. For example, if the data is a {@link android.database.Cursor} 90c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * and you place it in a {@link android.widget.CursorAdapter}, use 91c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * the {@link android.widget.CursorAdapter#CursorAdapter(android.content.Context, 92c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * android.database.Cursor, int)} constructor <em>without</em> passing 93c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * in either {@link android.widget.CursorAdapter#FLAG_AUTO_REQUERY} 94c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * or {@link android.widget.CursorAdapter#FLAG_REGISTER_CONTENT_OBSERVER} 95c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * (that is, use 0 for the flags argument). This prevents the CursorAdapter 96c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * from doing its own observing of the Cursor, which is not needed since 97c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * when a change happens you will get a new Cursor throw another call 98c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * here. 99c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * <li> The Loader will release the data once it knows the application 100c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * is no longer using it. For example, if the data is 101c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * a {@link android.database.Cursor} from a {@link android.content.CursorLoader}, 102c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * you should not call close() on it yourself. If the Cursor is being placed in a 103c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * {@link android.widget.CursorAdapter}, you should use the 104c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * {@link android.widget.CursorAdapter#swapCursor(android.database.Cursor)} 105c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * method so that the old Cursor is not closed. 106c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * </ul> 107c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 1084911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * @param loader The Loader that has finished. 1094911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * @param data The data generated by the Loader. 1104911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 111c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn public void onLoadFinished(Loader<D> loader, D data); 112c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn 113c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn /** 114c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * Called when a previously created loader is being reset, and thus 115c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * making its data unavailable. The application should at this point 116c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * remove any references it has to the Loader's data. 117c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 118c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param loader The Loader that is being reset. 119c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn */ 120c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn public void onLoaderReset(Loader<D> loader); 121c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 122c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 1234911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn /** 1244911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * Ensures a loader is initialized and active. If the loader doesn't 1254911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * already exist, one is created and (if the activity/fragment is currently 1264911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * started) starts the loader. Otherwise the last created 1274911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * loader is re-used. 1284911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * 1294911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * <p>In either case, the given callback is associated with the loader, and 1304911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * will be called as the loader state changes. If at the point of call 1314911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * the caller is in its started state, and the requested loader 1324911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * already exists and has generated its data, then 133c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * callback {@link LoaderCallbacks#onLoadFinished} will 1344911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * be called immediately (inside of this function), so you must be prepared 1354911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * for this to happen. 136c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 137c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param id A unique identifier for this loader. Can be whatever you want. 138c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * Identifiers are scoped to a particular LoaderManager instance. 139c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param args Optional arguments to supply to the loader at construction. 140a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn * If a loader already exists (a new one does not need to be created), this 141a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn * parameter will be ignored and the last arguments continue to be used. 142c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param callback Interface the LoaderManager will call to report about 143c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * changes in the state of the loader. Required. 1444911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 145ab36acb39941ce981dddda9f9cf4d2d23a56fd26Dianne Hackborn public abstract <D> Loader<D> initLoader(int id, Bundle args, 1464911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn LoaderManager.LoaderCallbacks<D> callback); 1474911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 1484911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn /** 149c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * Starts a new or restarts an existing {@link android.content.Loader} in 150c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * this manager, registers the callbacks to it, 1514911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * and (if the activity/fragment is currently started) starts loading it. 1524911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * If a loader with the same id has previously been 1534911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * started it will automatically be destroyed when the new loader completes 1544911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * its work. The callback will be delivered before the old loader 1554911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * is destroyed. 156c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * 157c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param id A unique identifier for this loader. Can be whatever you want. 158c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * Identifiers are scoped to a particular LoaderManager instance. 159c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param args Optional arguments to supply to the loader at construction. 160c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * @param callback Interface the LoaderManager will call to report about 161c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn * changes in the state of the loader. Required. 1624911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 163ab36acb39941ce981dddda9f9cf4d2d23a56fd26Dianne Hackborn public abstract <D> Loader<D> restartLoader(int id, Bundle args, 1644911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn LoaderManager.LoaderCallbacks<D> callback); 1654911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 1664911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn /** 167f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn * Stops and removes the loader with the given ID. If this loader 168f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn * had previously reported data to the client through 169f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn * {@link LoaderCallbacks#onLoadFinished(Loader, Object)}, a call 170f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn * will be made to {@link LoaderCallbacks#onLoaderReset(Loader)}. 1714911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 172c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn public abstract void destroyLoader(int id); 173c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn 174c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn /** 1754911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * Return the Loader with the given id or null if no matching Loader 1764911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn * is found. 1774911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn */ 178ab36acb39941ce981dddda9f9cf4d2d23a56fd26Dianne Hackborn public abstract <D> Loader<D> getLoader(int id); 17930d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn 18030d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn /** 18130d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * Print the LoaderManager's state into the given stream. 18230d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * 18330d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * @param prefix Text to print at the front of each line. 18430d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * @param fd The raw file descriptor that the dump is being sent to. 18530d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * @param writer A PrintWriter to which the dump is to be set. 18630d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn * @param args Additional arguments to the dump request. 18730d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn */ 18830d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn public abstract void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args); 189a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn 190a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn /** 191a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn * Control whether the framework's internal loader manager debugging 192a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn * logs are turned on. If enabled, you will see output in logcat as 193a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn * the framework performs loader operations. 194a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn */ 195a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn public static void enableDebugLogging(boolean enabled) { 196a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn LoaderManagerImpl.DEBUG = enabled; 197a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn } 198180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell 199180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell /** @hide for internal testing only */ 200180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell public FragmentHostCallback getFragmentHostCallback() { return null; } 2014911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn} 2024911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 203ab36acb39941ce981dddda9f9cf4d2d23a56fd26Dianne Hackbornclass LoaderManagerImpl extends LoaderManager { 204a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn static final String TAG = "LoaderManager"; 205ec541e1787b39605200584042fa1e144923eeb4fDianne Hackborn static boolean DEBUG = false; 2065e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 2075e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // These are the currently active loaders. A loader is here 2085e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // from the time its load is started until it has been explicitly 2095e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // stopped or restarted by the application. 210f4bf0ae2a7c2d9d92c5c8abdb82baa53b4c9ccdaDianne Hackborn final SparseArray<LoaderInfo> mLoaders = new SparseArray<LoaderInfo>(0); 2115e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 2125e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // These are previously run loaders. This list is maintained internally 2135e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // to avoid destroying a loader while an application is still using it. 2145e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // It allows an application to restart a loader, but continue using its 2155e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // previously run loader until the new loader's data is available. 216f4bf0ae2a7c2d9d92c5c8abdb82baa53b4c9ccdaDianne Hackborn final SparseArray<LoaderInfo> mInactiveLoaders = new SparseArray<LoaderInfo>(0); 2175e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 21862bea2f1710be0d1a42c07109fd4307ded660d3bDianne Hackborn final String mWho; 21962bea2f1710be0d1a42c07109fd4307ded660d3bDianne Hackborn 2204911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn boolean mStarted; 2214911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn boolean mRetaining; 2224911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn boolean mRetainingStarted; 2236e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 2246e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn boolean mCreatingLoader; 225a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy private FragmentHostCallback mHost; 2264911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 227b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown final class LoaderInfo implements Loader.OnLoadCompleteListener<Object>, 228b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown Loader.OnLoadCanceledListener<Object> { 2292707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn final int mId; 2302707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn final Bundle mArgs; 2312707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderManager.LoaderCallbacks<Object> mCallbacks; 2322707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn Loader<Object> mLoader; 2336e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn boolean mHaveData; 2346e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn boolean mDeliveredData; 2352707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn Object mData; 2362707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn boolean mStarted; 2372707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn boolean mRetaining; 2382707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn boolean mRetainingStarted; 239afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn boolean mReportNextStart; 2402707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn boolean mDestroyed; 2412707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn boolean mListenerRegistered; 24230d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn 2436e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn LoaderInfo mPendingLoader; 2446e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 2452707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn public LoaderInfo(int id, Bundle args, LoaderManager.LoaderCallbacks<Object> callbacks) { 2462707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mId = id; 2472707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mArgs = args; 2482707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mCallbacks = callbacks; 2492707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2502707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 2512707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void start() { 2522707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mRetaining && mRetainingStarted) { 2532707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // Our owner is started, but we were being retained from a 2542707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // previous instance in the started state... so there is really 2552707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // nothing to do here, since the loaders are still started. 2562707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mStarted = true; 2572707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn return; 2582707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2592707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 2604911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn if (mStarted) { 2614911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn // If loader already started, don't restart. 2624911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn return; 2634911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn } 2644911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn 2650e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn mStarted = true; 2660e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn 2675e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (DEBUG) Log.v(TAG, " Starting: " + this); 2682707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mLoader == null && mCallbacks != null) { 2692707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoader = mCallbacks.onCreateLoader(mId, mArgs); 2702707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2712707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mLoader != null) { 2720e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn if (mLoader.getClass().isMemberClass() 2730e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn && !Modifier.isStatic(mLoader.getClass().getModifiers())) { 274a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn throw new IllegalArgumentException( 2750e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn "Object returned from onCreateLoader must not be a non-static inner member class: " 276a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn + mLoader); 277a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn } 2784911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn if (!mListenerRegistered) { 2794911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn mLoader.registerListener(mId, this); 280b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown mLoader.registerOnLoadCanceledListener(this); 2814911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn mListenerRegistered = true; 2824911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn } 2832707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoader.startLoading(); 2842707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2852707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2862707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 2872707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void retain() { 2885e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (DEBUG) Log.v(TAG, " Retaining: " + this); 2892707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mRetaining = true; 2902707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mRetainingStarted = mStarted; 2912707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mStarted = false; 2922707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mCallbacks = null; 2932707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 2942707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 2952707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void finishRetain() { 2962707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mRetaining) { 2975e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (DEBUG) Log.v(TAG, " Finished Retaining: " + this); 2982707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mRetaining = false; 2992707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mStarted != mRetainingStarted) { 3002707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (!mStarted) { 3012707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // This loader was retained in a started state, but 3022707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // at the end of retaining everything our owner is 3032707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // no longer started... so make it stop. 3042707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn stop(); 3052707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 3062707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 307c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 308c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn 309afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn if (mStarted && mHaveData && !mReportNextStart) { 310c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // This loader has retained its data, either completely across 311c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // a configuration change or just whatever the last data set 312c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // was after being restarted from a stop, and now at the point of 313c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // finishing the retain we find we remain started, have 314c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // our data, and the owner has a new callback... so 315c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn // let's deliver the data now. 316c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn callOnLoadFinished(mLoader, mData); 3172707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 3182707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 3192707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 320afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn void reportStart() { 321afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn if (mStarted) { 322afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn if (mReportNextStart) { 323afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn mReportNextStart = false; 324eba13dd07f2e9070b2017f8defddd5bb719939a1Adam Powell if (mHaveData && !mRetaining) { 325afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn callOnLoadFinished(mLoader, mData); 326afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 327afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 328afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 329afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 330afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn 3312707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void stop() { 3325e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (DEBUG) Log.v(TAG, " Stopping: " + this); 3332707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mStarted = false; 334debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn if (!mRetaining) { 335debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn if (mLoader != null && mListenerRegistered) { 336debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn // Let the loader know we're done with it 337debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn mListenerRegistered = false; 338debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn mLoader.unregisterListener(this); 339b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown mLoader.unregisterOnLoadCanceledListener(this); 340debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn mLoader.stopLoading(); 341debb2e25b3ce2f0f5195a2895dd1882fc172d4d8Dianne Hackborn } 3422707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 3432707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 344b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 345e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell boolean cancel() { 346b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (DEBUG) Log.v(TAG, " Canceling: " + this); 347b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (mStarted && mLoader != null && mListenerRegistered) { 348e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell final boolean cancelLoadResult = mLoader.cancelLoad(); 349e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell if (!cancelLoadResult) { 350b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown onLoadCanceled(mLoader); 351b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 352e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell return cancelLoadResult; 353b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 354e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell return false; 355b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 356b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 3572707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void destroy() { 3585e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (DEBUG) Log.v(TAG, " Destroying: " + this); 3592707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mDestroyed = true; 3606e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn boolean needReset = mDeliveredData; 3616e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mDeliveredData = false; 3626e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mCallbacks != null && mLoader != null && mHaveData && needReset) { 363a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Reseting: " + this); 364c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn String lastBecause = null; 365a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null) { 366a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy lastBecause = mHost.mFragmentManager.mNoTransactionsBecause; 367a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.mNoTransactionsBecause = "onLoaderReset"; 368c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 369c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn try { 370c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn mCallbacks.onLoaderReset(mLoader); 371c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } finally { 372a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null) { 373a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.mNoTransactionsBecause = lastBecause; 374c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 375c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 376c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 3772707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mCallbacks = null; 378c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn mData = null; 3796e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mHaveData = false; 3802707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mLoader != null) { 3812707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mListenerRegistered) { 3822707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mListenerRegistered = false; 3832707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoader.unregisterListener(this); 384b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown mLoader.unregisterOnLoadCanceledListener(this); 3852707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 386c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn mLoader.reset(); 3872707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 3886e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mPendingLoader != null) { 3896e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mPendingLoader.destroy(); 3906e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 3912707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 392b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 393b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown @Override 394b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown public void onLoadCanceled(Loader<Object> loader) { 395b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (DEBUG) Log.v(TAG, "onLoadCanceled: " + this); 396b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 397b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (mDestroyed) { 398b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (DEBUG) Log.v(TAG, " Ignoring load canceled -- destroyed"); 399b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown return; 400b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 401b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 402b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (mLoaders.get(mId) != this) { 403b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown // This cancellation message is not coming from the current active loader. 404b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown // We don't care about it. 405b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (DEBUG) Log.v(TAG, " Ignoring load canceled -- not active"); 406b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown return; 407b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 408b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 409b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown LoaderInfo pending = mPendingLoader; 410b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (pending != null) { 411b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown // There is a new request pending and we were just 412b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown // waiting for the old one to cancel or complete before starting 413b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown // it. So now it is time, switch over to the new loader. 414b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown if (DEBUG) Log.v(TAG, " Switching to pending loader: " + pending); 415b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown mPendingLoader = null; 416b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown mLoaders.put(mId, null); 417b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown destroy(); 418b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown installLoader(pending); 419b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 420b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown } 421b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown 422b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown @Override 423b19a71a20adb48c084e87d06a1e6b0dcb49170f5Jeff Brown public void onLoadComplete(Loader<Object> loader, Object data) { 424a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "onLoadComplete: " + this); 4256e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 4262707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mDestroyed) { 427a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Ignoring load complete -- destroyed"); 4282707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn return; 4292707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 4306e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 4316e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mLoaders.get(mId) != this) { 4326e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // This data is not coming from the current active loader. 4336e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // We don't care about it. 4346e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (DEBUG) Log.v(TAG, " Ignoring load complete -- not active"); 4356e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return; 4366e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 4376e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 4386e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn LoaderInfo pending = mPendingLoader; 4396e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (pending != null) { 4406e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // There is a new request pending and we were just 4416e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // waiting for the old one to complete before starting 4426e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // it. So now it is time, switch over to the new loader. 4436e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (DEBUG) Log.v(TAG, " Switching to pending loader: " + pending); 4446e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mPendingLoader = null; 4456e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mLoaders.put(mId, null); 4466e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn destroy(); 4476e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn installLoader(pending); 4486e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return; 4496e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 4502707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 451c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn // Notify of the new data so the app can switch out the old data before 452c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn // we try to destroy it. 4536e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mData != data || !mHaveData) { 4540e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn mData = data; 4556e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mHaveData = true; 4560e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn if (mStarted) { 4570e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn callOnLoadFinished(loader, data); 4580e3b8f421dfcc5363f234eb1b76479cb2fb2e8eeDianne Hackborn } 459c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn } 460c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 461a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn //if (DEBUG) Log.v(TAG, " onLoadFinished returned: " + this); 4625e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 4635e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // We have now given the application the new loader with its 4645e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // loaded data, so it should have stopped using the previous 4655e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // loader. If there is a previous loader on the inactive list, 4665e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // clean it up. 4672707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderInfo info = mInactiveLoaders.get(mId); 4685e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (info != null && info != this) { 4696e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info.mDeliveredData = false; 4705e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn info.destroy(); 4712707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mInactiveLoaders.remove(mId); 472c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 473635c60af623c73d2409f5729c0953638b5d6c497Adam Powell 474a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null && !hasRunningLoaders()) { 475a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.startPendingDeferredFragments(); 476635c60af623c73d2409f5729c0953638b5d6c497Adam Powell } 477c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 4785e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 479fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn void callOnLoadFinished(Loader<Object> loader, Object data) { 480fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn if (mCallbacks != null) { 481fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn String lastBecause = null; 482a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null) { 483a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy lastBecause = mHost.mFragmentManager.mNoTransactionsBecause; 484a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.mNoTransactionsBecause = "onLoadFinished"; 485fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 486fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn try { 487a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " onLoadFinished in " + loader + ": " 488a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn + loader.dataToString(data)); 489fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn mCallbacks.onLoadFinished(loader, data); 490fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } finally { 491a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null) { 492a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.mNoTransactionsBecause = lastBecause; 493fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 494fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 4956e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mDeliveredData = true; 496fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 497fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 498fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn 4995e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn @Override 5005e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn public String toString() { 5015e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn StringBuilder sb = new StringBuilder(64); 5025e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn sb.append("LoaderInfo{"); 5035e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn sb.append(Integer.toHexString(System.identityHashCode(this))); 5045e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn sb.append(" #"); 5055e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn sb.append(mId); 506a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append(" : "); 507a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn DebugUtils.buildShortClassTag(mLoader, sb); 508a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append("}}"); 50930d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn return sb.toString(); 51030d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 51130d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn 51230d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 51330d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print("mId="); writer.print(mId); 51430d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(" mArgs="); writer.println(mArgs); 51530d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print("mCallbacks="); writer.println(mCallbacks); 51630d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print("mLoader="); writer.println(mLoader); 517a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (mLoader != null) { 518a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn mLoader.dump(prefix + " ", fd, writer, args); 519a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn } 5206e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mHaveData || mDeliveredData) { 5216e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn writer.print(prefix); writer.print("mHaveData="); writer.print(mHaveData); 5226e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn writer.print(" mDeliveredData="); writer.println(mDeliveredData); 5236e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn writer.print(prefix); writer.print("mData="); writer.println(mData); 5246e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 52530d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print("mStarted="); writer.print(mStarted); 526afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn writer.print(" mReportNextStart="); writer.print(mReportNextStart); 527f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn writer.print(" mDestroyed="); writer.println(mDestroyed); 528afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn writer.print(prefix); writer.print("mRetaining="); writer.print(mRetaining); 529afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn writer.print(" mRetainingStarted="); writer.print(mRetainingStarted); 530afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn writer.print(" mListenerRegistered="); writer.println(mListenerRegistered); 5316e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mPendingLoader != null) { 5326e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn writer.print(prefix); writer.println("Pending Loader "); 5336e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn writer.print(mPendingLoader); writer.println(":"); 5346e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mPendingLoader.dump(prefix + " ", fd, writer, args); 5356e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 53630d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 537c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 538c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 539a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy LoaderManagerImpl(String who, FragmentHostCallback host, boolean started) { 54062bea2f1710be0d1a42c07109fd4307ded660d3bDianne Hackborn mWho = who; 541a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost = host; 542c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn mStarted = started; 543c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 544c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 545a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy void updateHostController(FragmentHostCallback host) { 546a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost = host; 547fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 548180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell 549180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell public FragmentHostCallback getFragmentHostCallback() { 550180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell return mHost; 551180202f2211d8c6bbb7a7057e61dafc90fe31930Adam Powell } 552fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn 5532707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn private LoaderInfo createLoader(int id, Bundle args, 5542707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderManager.LoaderCallbacks<Object> callback) { 5552707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderInfo info = new LoaderInfo(id, args, (LoaderManager.LoaderCallbacks<Object>)callback); 5562707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn Loader<Object> loader = callback.onCreateLoader(id, args); 5572707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn info.mLoader = (Loader<Object>)loader; 5586e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return info; 5596e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 5606e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 5616e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn private LoaderInfo createAndInstallLoader(int id, Bundle args, 5626e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn LoaderManager.LoaderCallbacks<Object> callback) { 5636e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn try { 5646e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mCreatingLoader = true; 5656e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn LoaderInfo info = createLoader(id, args, callback); 5666e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn installLoader(info); 5676e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return info; 5686e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } finally { 5696e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mCreatingLoader = false; 5706e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 5716e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 5726e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 5736e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn void installLoader(LoaderInfo info) { 5746e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mLoaders.put(info.mId, info); 5752707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (mStarted) { 5764911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn // The activity will start all existing loaders in it's onStart(), 5774911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn // so only start them here if we're past that point of the activitiy's 5784911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn // life cycle 5794911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn info.start(); 5802707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 5812707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 5822707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 5836e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn /** 5846e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Call to initialize a particular ID with a Loader. If this ID already 5856e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * has a Loader associated with it, it is left unchanged and any previous 5866e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * callbacks replaced with the newly provided ones. If there is not currently 5876e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * a Loader for the ID, a new one is created and started. 5886e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 5896e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * <p>This function should generally be used when a component is initializing, 5906e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * to ensure that a Loader it relies on is created. This allows it to re-use 5916e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * an existing Loader's data if there already is one, so that for example 5926e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * when an {@link Activity} is re-created after a configuration change it 5936e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * does not need to re-create its loaders. 5946e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 5956e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * <p>Note that in the case where an existing Loader is re-used, the 5966e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * <var>args</var> given here <em>will be ignored</em> because you will 5976e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * continue using the previous Loader. 5986e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 5996e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param id A unique (to this LoaderManager instance) identifier under 6006e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * which to manage the new Loader. 6016e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param args Optional arguments that will be propagated to 6026e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * {@link LoaderCallbacks#onCreateLoader(int, Bundle) LoaderCallbacks.onCreateLoader()}. 6036e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param callback Interface implementing management of this Loader. Required. 6046e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Its onCreateLoader() method will be called while inside of the function to 6056e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * instantiate the Loader object. 6066e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn */ 6072707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn @SuppressWarnings("unchecked") 6082707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn public <D> Loader<D> initLoader(int id, Bundle args, LoaderManager.LoaderCallbacks<D> callback) { 6096e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mCreatingLoader) { 6106e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn throw new IllegalStateException("Called while creating a loader"); 6116e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 6126e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 6132707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderInfo info = mLoaders.get(id); 6142707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 615a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "initLoader in " + this + ": args=" + args); 6165e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 6172707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (info == null) { 6182707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // Loader doesn't already exist; create. 6196e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info = createAndInstallLoader(id, args, (LoaderManager.LoaderCallbacks<Object>)callback); 620a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Created new loader " + info); 6212707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } else { 622a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Re-using existing loader " + info); 6232707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn info.mCallbacks = (LoaderManager.LoaderCallbacks<Object>)callback; 6242707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 6252707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 6266e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (info.mHaveData && mStarted) { 6272707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // If the loader has already generated its data, report it now. 628fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn info.callOnLoadFinished(info.mLoader, info.mData); 6292707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 6302707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 6312707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn return (Loader<D>)info.mLoader; 6322707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 6332707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 6346e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn /** 6356e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Call to re-create the Loader associated with a particular ID. If there 6366e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * is currently a Loader associated with this ID, it will be 6376e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * canceled/stopped/destroyed as appropriate. A new Loader with the given 6386e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * arguments will be created and its data delivered to you once available. 6396e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 6406e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * <p>This function does some throttling of Loaders. If too many Loaders 6416e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * have been created for the given ID but not yet generated their data, 6426e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * new calls to this function will create and return a new Loader but not 6436e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * actually start it until some previous loaders have completed. 6446e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 6456e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * <p>After calling this function, any previous Loaders associated with 6466e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * this ID will be considered invalid, and you will receive no further 6476e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * data updates from them. 6486e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * 6496e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param id A unique (to this LoaderManager instance) identifier under 6506e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * which to manage the new Loader. 6516e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param args Optional arguments that will be propagated to 6526e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * {@link LoaderCallbacks#onCreateLoader(int, Bundle) LoaderCallbacks.onCreateLoader()}. 6536e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param callback Interface implementing management of this Loader. Required. 6546e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Its onCreateLoader() method will be called while inside of the function to 6556e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * instantiate the Loader object. 6566e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn */ 657c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn @SuppressWarnings("unchecked") 6582707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn public <D> Loader<D> restartLoader(int id, Bundle args, LoaderManager.LoaderCallbacks<D> callback) { 6596e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mCreatingLoader) { 6606e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn throw new IllegalStateException("Called while creating a loader"); 6616e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 6626e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 663c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn LoaderInfo info = mLoaders.get(id); 664a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "restartLoader in " + this + ": args=" + args); 665c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn if (info != null) { 6665e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn LoaderInfo inactive = mInactiveLoaders.get(id); 6675e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn if (inactive != null) { 6686e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (info.mHaveData) { 6695e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // This loader now has data... we are probably being 6705e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // called from within onLoadComplete, where we haven't 6715e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // yet destroyed the last inactive loader. So just do 6725e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // that now. 673a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Removing last inactive loader: " + info); 6746e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn inactive.mDeliveredData = false; 6755e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn inactive.destroy(); 676260c3c77d9b340164e055f87002c64d78da6e836Dianne Hackborn info.mLoader.abandon(); 6775e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn mInactiveLoaders.put(id, info); 6785e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn } else { 6795e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn // We already have an inactive loader for this ID that we are 680e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // waiting for! Try to cancel; if this returns true then the task is still 681e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // running and we have more work to do. 682e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell if (!info.cancel()) { 683e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // The current Loader has not been started or was successfully canceled, 684e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // we thus have no reason to keep it around. Remove it and a new 685e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // LoaderInfo will be created below. 6866e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (DEBUG) Log.v(TAG, " Current loader is stopped; replacing"); 6876e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn mLoaders.put(id, null); 6886e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info.destroy(); 6896e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } else { 6906e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // Now we have three active loaders... we'll queue 6916e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn // up this request to be processed once one of the other loaders 692e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell // finishes. 693e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell if (DEBUG) Log.v(TAG, 694e5552be22a016dd8b79026f56b071ab128d5a904Adam Powell " Current loader is running; configuring pending loader"); 6956e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (info.mPendingLoader != null) { 6966e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (DEBUG) Log.v(TAG, " Removing pending loader: " + info.mPendingLoader); 6976e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info.mPendingLoader.destroy(); 6986e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info.mPendingLoader = null; 6996e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 7006e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (DEBUG) Log.v(TAG, " Enqueuing as new pending loader"); 7016e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info.mPendingLoader = createLoader(id, args, 7026e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn (LoaderManager.LoaderCallbacks<Object>)callback); 7036e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return (Loader<D>)info.mPendingLoader.mLoader; 7046e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 7055e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn } 7062707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } else { 7072707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // Keep track of the previous instance of this loader so we can destroy 7082707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn // it when the new one completes. 709a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, " Making last loader inactive: " + info); 710260c3c77d9b340164e055f87002c64d78da6e836Dianne Hackborn info.mLoader.abandon(); 7112707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mInactiveLoaders.put(id, info); 7122707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 713c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 714c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 7156e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn info = createAndInstallLoader(id, args, (LoaderManager.LoaderCallbacks<Object>)callback); 7162707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn return (Loader<D>)info.mLoader; 717c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 718c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 7196e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn /** 7206e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Rip down, tear apart, shred to pieces a current Loader ID. After returning 7216e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * from this function, any Loader objects associated with this ID are 7226e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * destroyed. Any data associated with them is destroyed. You better not 7236e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * be using it when you do this. 7246e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * @param id Identifier of the Loader to be destroyed. 7256e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn */ 726c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn public void destroyLoader(int id) { 7276e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mCreatingLoader) { 7286e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn throw new IllegalStateException("Called while creating a loader"); 7296e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 7306e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 731a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "destroyLoader in " + this + " of " + id); 7322707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn int idx = mLoaders.indexOfKey(id); 7332707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (idx >= 0) { 7342707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn LoaderInfo info = mLoaders.valueAt(idx); 7352707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoaders.removeAt(idx); 7364911b783aa9f4af5ac919db861751d350471f5efDianne Hackborn info.destroy(); 737c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 738f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn idx = mInactiveLoaders.indexOfKey(id); 739f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn if (idx >= 0) { 740f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn LoaderInfo info = mInactiveLoaders.valueAt(idx); 741f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn mInactiveLoaders.removeAt(idx); 742f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn info.destroy(); 743f73c75ca20fcaaee1b0eeaaf756252c33e3099c6Dianne Hackborn } 744a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy if (mHost != null && !hasRunningLoaders()) { 745a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy mHost.mFragmentManager.startPendingDeferredFragments(); 74637510908a7b570accb2c4829842790b3d9d3a102Adam Powell } 747c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 748c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 7496e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn /** 7506e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * Return the most recent Loader object associated with the 7516e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn * given ID. 7526e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn */ 753c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn @SuppressWarnings("unchecked") 754c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn public <D> Loader<D> getLoader(int id) { 7556e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (mCreatingLoader) { 7566e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn throw new IllegalStateException("Called while creating a loader"); 7576e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 7586e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn 759c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn LoaderInfo loaderInfo = mLoaders.get(id); 760c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn if (loaderInfo != null) { 7616e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn if (loaderInfo.mPendingLoader != null) { 7626e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return (Loader<D>)loaderInfo.mPendingLoader.mLoader; 7636e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn } 7646e1bf6a3054674281bafd270165c99cb2423666dDianne Hackborn return (Loader<D>)loaderInfo.mLoader; 765c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 766c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn return null; 767c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 768c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 769c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn void doStart() { 770a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Starting in " + this); 771fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn if (mStarted) { 772fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn RuntimeException e = new RuntimeException("here"); 773fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn e.fillInStackTrace(); 774fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn Log.w(TAG, "Called doStart when already started: " + this, e); 775fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn return; 776fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 777fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn 778c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn mStarted = true; 779c91893511dc1b9e634648406c9ae61b15476e65dDianne Hackborn 780c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn // Call out to sub classes so they can start their loaders 781c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn // Let the existing loaders know that we want to be notified when a load is complete 782c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 7832707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoaders.valueAt(i).start(); 784c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 785c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 786c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 787c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn void doStop() { 788a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Stopping in " + this); 789fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn if (!mStarted) { 790fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn RuntimeException e = new RuntimeException("here"); 791fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn e.fillInStackTrace(); 792fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn Log.w(TAG, "Called doStop when not started: " + this, e); 793fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn return; 794fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 7955e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 796c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 7972707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoaders.valueAt(i).stop(); 798c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 799c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn mStarted = false; 800c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 801c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn 8022707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void doRetain() { 803a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Retaining in " + this); 804fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn if (!mStarted) { 805fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn RuntimeException e = new RuntimeException("here"); 806fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn e.fillInStackTrace(); 807fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn Log.w(TAG, "Called doRetain when not started: " + this, e); 808fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn return; 809fb3cffeb35368da22f99b85d45039c4e6e471c06Dianne Hackborn } 8105e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 8112707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mRetaining = true; 8122707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mStarted = false; 8132707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 8142707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoaders.valueAt(i).retain(); 8152707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 8162707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 8172707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 8182707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn void finishRetain() { 819a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (mRetaining) { 820a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Finished Retaining in " + this); 8215e0d59547c4042037e23a42ba4e2521721e9c7d3Dianne Hackborn 822a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn mRetaining = false; 823a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 824a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn mLoaders.valueAt(i).finishRetain(); 825a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn } 8262707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 8272707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 8282707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 829afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn void doReportNextStart() { 830afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 831afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn mLoaders.valueAt(i).mReportNextStart = true; 832afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 833afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 834afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn 835afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn void doReportStart() { 836afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 837afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn mLoaders.valueAt(i).reportStart(); 838afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 839afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn } 840afc4b283fdaedec9bf32492a019b43cc33edc9b6Dianne Hackborn 841c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn void doDestroy() { 8422707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn if (!mRetaining) { 843a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Destroying Active in " + this); 844c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn for (int i = mLoaders.size()-1; i >= 0; i--) { 8452707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mLoaders.valueAt(i).destroy(); 846c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 8471da8e8ce8912b79a5ed7cd3865a3913ee9bfb1d9Roman Mazur mLoaders.clear(); 848c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 8492707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn 850a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn if (DEBUG) Log.v(TAG, "Destroying Inactive in " + this); 8512707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn for (int i = mInactiveLoaders.size()-1; i >= 0; i--) { 8522707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mInactiveLoaders.valueAt(i).destroy(); 8532707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn } 8542707d6026240bcca6f0e35e2e1138958882e90ceDianne Hackborn mInactiveLoaders.clear(); 855c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn } 85630d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn 85730d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn @Override 858a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn public String toString() { 859a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn StringBuilder sb = new StringBuilder(128); 860a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append("LoaderManager{"); 861a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append(Integer.toHexString(System.identityHashCode(this))); 862a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append(" in "); 863a5fc6f006f67867417b7a427de6e7394c4312decTodd Kennedy DebugUtils.buildShortClassTag(mHost, sb); 864a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn sb.append("}}"); 865a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn return sb.toString(); 866a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn } 867a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn 868a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn @Override 86930d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn public void dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args) { 87030d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn if (mLoaders.size() > 0) { 87130d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.println("Active Loaders:"); 87230d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn String innerPrefix = prefix + " "; 87330d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn for (int i=0; i < mLoaders.size(); i++) { 87430d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn LoaderInfo li = mLoaders.valueAt(i); 87530d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print(" #"); writer.print(mLoaders.keyAt(i)); 876a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn writer.print(": "); writer.println(li.toString()); 87730d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn li.dump(innerPrefix, fd, writer, args); 87830d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 87930d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 88030d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn if (mInactiveLoaders.size() > 0) { 88130d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.println("Inactive Loaders:"); 88230d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn String innerPrefix = prefix + " "; 88330d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn for (int i=0; i < mInactiveLoaders.size(); i++) { 88430d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn LoaderInfo li = mInactiveLoaders.valueAt(i); 88530d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn writer.print(prefix); writer.print(" #"); writer.print(mInactiveLoaders.keyAt(i)); 886a2ea747faaf5fcd437afbaaf4085cfc29e7c16b8Dianne Hackborn writer.print(": "); writer.println(li.toString()); 88730d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn li.dump(innerPrefix, fd, writer, args); 88830d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 88930d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 89030d7189067524000c738c188c4ff91f84f474d25Dianne Hackborn } 891635c60af623c73d2409f5729c0953638b5d6c497Adam Powell 892635c60af623c73d2409f5729c0953638b5d6c497Adam Powell public boolean hasRunningLoaders() { 893635c60af623c73d2409f5729c0953638b5d6c497Adam Powell boolean loadersRunning = false; 894635c60af623c73d2409f5729c0953638b5d6c497Adam Powell final int count = mLoaders.size(); 895635c60af623c73d2409f5729c0953638b5d6c497Adam Powell for (int i = 0; i < count; i++) { 896635c60af623c73d2409f5729c0953638b5d6c497Adam Powell final LoaderInfo li = mLoaders.valueAt(i); 897635c60af623c73d2409f5729c0953638b5d6c497Adam Powell loadersRunning |= li.mStarted && !li.mDeliveredData; 898635c60af623c73d2409f5729c0953638b5d6c497Adam Powell } 899635c60af623c73d2409f5729c0953638b5d6c497Adam Powell return loadersRunning; 900635c60af623c73d2409f5729c0953638b5d6c497Adam Powell } 901c801768e4d29667a2608695449ebc2833ba0f200Dianne Hackborn} 902