RemoteViewsAdapter.java revision 490127df193ecaa4dacf241a1a6b72ed6e5b0a0f
1499cb9f516062b654952d282f211bee44c31a3c2Winson Chung/* 2499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Copyright (C) 2007 The Android Open Source Project 3499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * 4499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Licensed under the Apache License, Version 2.0 (the "License"); 5499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * you may not use this file except in compliance with the License. 6499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * You may obtain a copy of the License at 7499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * 8499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * http://www.apache.org/licenses/LICENSE-2.0 9499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * 10499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * Unless required by applicable law or agreed to in writing, software 11499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * distributed under the License is distributed on an "AS IS" BASIS, 12499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * See the License for the specific language governing permissions and 14499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * limitations under the License. 15499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 16499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 17499cb9f516062b654952d282f211bee44c31a3c2Winson Chungpackage android.widget; 18499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chungimport java.lang.ref.WeakReference; 20499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport java.util.HashMap; 213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chungimport java.util.HashSet; 22c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chungimport java.util.LinkedList; 23499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport java.util.Map; 24499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 25499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.ComponentName; 26499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.Context; 27499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.Intent; 28499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.ServiceConnection; 29499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.Handler; 30499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.HandlerThread; 31499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.IBinder; 32499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.Looper; 33fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chungimport android.util.Log; 34a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chungimport android.view.LayoutInflater; 35499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.view.View; 36499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.view.View.MeasureSpec; 373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chungimport android.view.ViewGroup; 38499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 39499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport com.android.internal.widget.IRemoteViewsFactory; 40499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 41499cb9f516062b654952d282f211bee44c31a3c2Winson Chung/** 42499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * An adapter to a RemoteViewsService which fetches and caches RemoteViews 43499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * to be later inflated as child views. 44499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 45499cb9f516062b654952d282f211bee44c31a3c2Winson Chung/** @hide */ 46499cb9f516062b654952d282f211bee44c31a3c2Winson Chungpublic class RemoteViewsAdapter extends BaseAdapter { 47fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chung private static final String TAG = "RemoteViewsAdapter"; 48499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 49499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Context mContext; 50499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Intent mIntent; 51a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung private LayoutInflater mLayoutInflater; 52499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private RemoteViewsAdapterServiceConnection mServiceConnection; 533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private WeakReference<RemoteAdapterConnectionCallback> mCallback; 543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private FixedSizeRemoteViewsCache mCache; 553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of requested views that are to be notified when the associated RemoteViews are 573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // loaded. 583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private RemoteViewsFrameLayoutRefSet mRequestedViews; 59499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 60499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private HandlerThread mWorkerThread; 61499cb9f516062b654952d282f211bee44c31a3c2Winson Chung // items may be interrupted within the normally processed queues 62499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Handler mWorkerQueue; 63499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Handler mMainQueue; 64499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 65499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 66499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * An interface for the RemoteAdapter to notify other classes when adapters 67499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * are actually connected to/disconnected from their actual services. 68499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 69499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public interface RemoteAdapterConnectionCallback { 70499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void onRemoteAdapterConnected(); 71499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 72499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void onRemoteAdapterDisconnected(); 73499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 74499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 75499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 76499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * The service connection that gets populated when the RemoteViewsService is 773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * bound. This must be a static inner class to ensure that no references to the outer 783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * RemoteViewsAdapter instance is retained (this would prevent the RemoteViewsAdapter from being 793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * garbage collected, and would cause us to leak activities due to the caching mechanism for 803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * FrameLayouts in the adapter). 81499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static class RemoteViewsAdapterServiceConnection implements ServiceConnection { 83499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private boolean mConnected; 843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private WeakReference<RemoteViewsAdapter> mAdapter; 85499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private IRemoteViewsFactory mRemoteViewsFactory; 86499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsAdapterServiceConnection(RemoteViewsAdapter adapter) { 883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mAdapter = new WeakReference<RemoteViewsAdapter>(adapter); 89499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 90499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void onServiceConnected(ComponentName name, 923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung IBinder service) { 93499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mRemoteViewsFactory = IRemoteViewsFactory.Stub.asInterface(service); 94499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mConnected = true; 95c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Queue up work that we need to do for the callback to run 973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsAdapter adapter = mAdapter.get(); 983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (adapter == null) return; 993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mWorkerQueue.post(new Runnable() { 100499cb9f516062b654952d282f211bee44c31a3c2Winson Chung @Override 101499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void run() { 1023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Call back to the service to notify that the data set changed 1033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (adapter.mServiceConnection.isConnected()) { 1043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung IRemoteViewsFactory factory = 1053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mServiceConnection.getRemoteViewsFactory(); 1063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung try { 1073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // call back to the factory 1083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung factory.onDataSetChanged(); 1093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } catch (Exception e) { 1103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Log.e(TAG, "Error notifying factory of data set changed in " + 1113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung "onServiceConnected(): " + e.getMessage()); 1123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung e.printStackTrace(); 1133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Return early to prevent anything further from being notified 1153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // (effectively nothing has changed) 1163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 117499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Request meta data so that we have up to date data when calling back to 1203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the remote adapter callback 1213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.updateMetaData(); 1223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Post a runnable to call back to the view to notify it that we have 1243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // connected 12561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung adapter.mMainQueue.post(new Runnable() { 1263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung @Override 1273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void run() { 1283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteAdapterConnectionCallback callback = 1293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mCallback.get(); 1303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (callback != null) { 1313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung callback.onRemoteAdapterConnected(); 1323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 1353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 136499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 137499cb9f516062b654952d282f211bee44c31a3c2Winson Chung }); 138499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 139499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 140499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void onServiceDisconnected(ComponentName name) { 141499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mConnected = false; 1423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRemoteViewsFactory = null; 143499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsAdapter adapter = mAdapter.get(); 1453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (adapter == null) return; 146c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 1473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Clear the main/worker queues 1483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mMainQueue.removeMessages(0); 1493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mWorkerQueue.removeMessages(0); 1503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 15161ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // Clear the cache (the meta data will be re-requested on service re-connection) 1523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (adapter.mCache) { 1533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mCache.reset(); 1543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 155c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 1563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteAdapterConnectionCallback callback = adapter.mCallback.get(); 1573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (callback != null) { 1583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung callback.onRemoteAdapterDisconnected(); 1593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 160499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 161499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 162499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public IRemoteViewsFactory getRemoteViewsFactory() { 163499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return mRemoteViewsFactory; 164499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 165499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 166499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public boolean isConnected() { 167499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return mConnected; 168499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 169499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 170499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 171499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 1723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * A FrameLayout which contains a loading view, and manages the re/applying of RemoteViews when 1733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * they are loaded. 174499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 1753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsFrameLayout extends FrameLayout { 1763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsFrameLayout(Context context) { 1773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung super(context); 1783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 179499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 180499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 1813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Updates this RemoteViewsFrameLayout depending on the view that was loaded. 1823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * @param view the RemoteViews that was loaded. If null, the RemoteViews was not loaded 1833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * successfully. 184499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 1853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void onRemoteViewsLoaded(RemoteViews view) { 18661ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung try { 18761ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // Remove all the children of this layout first 18861ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung removeAllViews(); 18961ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung addView(view.apply(getContext(), this)); 19061ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung } catch (Exception e) { 19161ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung Log.e(TAG, "Failed to apply RemoteViews."); 19261ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung } 1933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 195499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 1973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Stores the references of all the RemoteViewsFrameLayouts that have been returned by the 1983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * adapter that have not yet had their RemoteViews loaded. 1993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 2003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsFrameLayoutRefSet { 2013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, LinkedList<RemoteViewsFrameLayout>> mReferences; 202499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsFrameLayoutRefSet() { 2043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences = new HashMap<Integer, LinkedList<RemoteViewsFrameLayout>>(); 205499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 206499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 207499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 2083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Adds a new reference to a RemoteViewsFrameLayout returned by the adapter. 209499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 2103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void add(int position, RemoteViewsFrameLayout layout) { 2113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Integer pos = position; 2123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung LinkedList<RemoteViewsFrameLayout> refs; 2133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create the list if necessary 2153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mReferences.containsKey(pos)) { 2163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs = mReferences.get(pos); 2173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 2183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs = new LinkedList<RemoteViewsFrameLayout>(); 2193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.put(pos, refs); 220499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 2213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add the references to the list 2233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs.add(layout); 224499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 225499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 2273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Notifies each of the RemoteViewsFrameLayouts associated with a particular position that 2283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * the associated RemoteViews has loaded. 2293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 2303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void notifyOnRemoteViewsLoaded(int position, RemoteViews view, int typeId) { 23161ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung if (view == null) return; 23261ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 2333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Integer pos = position; 2343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mReferences.containsKey(pos)) { 2353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Notify all the references for that position of the newly loaded RemoteViews 2363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final LinkedList<RemoteViewsFrameLayout> refs = mReferences.get(pos); 2373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (final RemoteViewsFrameLayout ref : refs) { 2383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung ref.onRemoteViewsLoaded(view); 2393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 2403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs.clear(); 241499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Remove this set from the original mapping 2433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.remove(pos); 244499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 245499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 246499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 2483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Removes all references to all RemoteViewsFrameLayouts returned by the adapter. 2493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 2503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void clear() { 2513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We currently just clear the references, and leave all the previous layouts returned 2523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // in their default state of the loading view. 2533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.clear(); 254499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 2553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 256499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 2583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * The meta-data associated with the cache in it's current state. 2593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 2603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsMetaData { 2613ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int count; 2623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int viewTypeCount; 2633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung boolean hasStableIds; 2643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung boolean isDataDirty; 2653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Used to determine how to construct loading views. If a loading view is not specified 2673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // by the user, then we try and load the first view, and use its height as the height for 2683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the default loading view. 2693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews mUserLoadingView; 2703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews mFirstView; 2713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int mFirstViewHeight; 2723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // A mapping from type id to a set of unique type ids 2743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private Map<Integer, Integer> mTypeIdIndexMap; 2753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsMetaData() { 2773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung reset(); 278499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 279499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void reset() { 2813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung count = 0; 2823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // by default there is at least one dummy view type 2833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung viewTypeCount = 1; 2843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung hasStableIds = true; 2853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung isDataDirty = false; 2863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mUserLoadingView = null; 2873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstView = null; 2883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstViewHeight = 0; 2893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mTypeIdIndexMap = new HashMap<Integer, Integer>(); 290499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 291499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void setLoadingViewTemplates(RemoteViews loadingView, RemoteViews firstView) { 2933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mUserLoadingView = loadingView; 2943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (firstView != null) { 2953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstView = firstView; 2963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstViewHeight = -1; 297499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 298499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 299499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public int getMappedViewType(int typeId) { 3013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mTypeIdIndexMap.containsKey(typeId)) { 3023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mTypeIdIndexMap.get(typeId); 3033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 3043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We +1 because the loading view always has view type id of 0 3053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int incrementalTypeId = mTypeIdIndexMap.size() + 1; 3063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mTypeIdIndexMap.put(typeId, incrementalTypeId); 3073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return incrementalTypeId; 3086394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3096394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3106394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 3113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private RemoteViewsFrameLayout createLoadingView(int position, View convertView, 3123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung ViewGroup parent) { 3133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create and return a new FrameLayout, and setup the references for this position 3143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Context context = parent.getContext(); 3153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViewsFrameLayout layout = new RemoteViewsFrameLayout(context); 3163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create a new loading view 3183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 3193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mUserLoadingView != null) { 3203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // A user-specified loading view 3213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung View loadingView = mUserLoadingView.apply(parent.getContext(), parent); 322a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen loadingView.setTagInternal(com.android.internal.R.id.rowTypeId, new Integer(0)); 3233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung layout.addView(loadingView); 3243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 3253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // A default loading view 3263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Use the size of the first row as a guide for the size of the loading view 3273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mFirstViewHeight < 0) { 3283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung View firstView = mFirstView.apply(parent.getContext(), parent); 3293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung firstView.measure( 3303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 3313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); 3323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstViewHeight = firstView.getMeasuredHeight(); 3333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstView = null; 3343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 3353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Compose the loading view text 337a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung TextView loadingTextView = (TextView) mLayoutInflater.inflate( 338a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung com.android.internal.R.layout.remote_views_adapter_default_loading_view, 339a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung layout, false); 340a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung loadingTextView.setHeight(mFirstViewHeight); 341a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung loadingTextView.setTag(new Integer(0)); 342a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung 343a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung layout.addView(loadingTextView); 344fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chung } 3456394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3466394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 3473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return layout; 3486394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 3506394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 3513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 3523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * The meta-data associated with a single item in the cache. 3533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 3543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsIndexMetaData { 3553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId; 3563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung long itemId; 357499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsIndexMetaData(RemoteViews v, long itemId) { 3593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung set(v, itemId); 360499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 361499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void set(RemoteViews v, long id) { 3633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung itemId = id; 3643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (v != null) 3653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = v.getLayoutId(); 3663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung else 3673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = 0; 3683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 3693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 370499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 3723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * 3733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 3743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class FixedSizeRemoteViewsCache { 3753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static final String TAG = "FixedSizeRemoteViewsCache"; 3763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The meta data related to all the RemoteViews, ie. count, is stable, etc. 3783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private RemoteViewsMetaData mMetaData; 3793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The cache/mapping of position to RemoteViewsMetaData. This set is guaranteed to be 3813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // greater than or equal to the set of RemoteViews. 3823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Note: The reason that we keep this separate from the RemoteViews cache below is that this 3833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // we still need to be able to access the mapping of position to meta data, without keeping 3843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the heavy RemoteViews around. The RemoteViews cache is trimmed to fixed constraints wrt. 3853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // memory and size, but this metadata cache will retain information until the data at the 3863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // position is guaranteed as not being necessary any more (usually on notifyDataSetChanged). 3873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, RemoteViewsIndexMetaData> mIndexMetaData; 3883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The cache of actual RemoteViews, which may be pruned if the cache gets too large, or uses 3903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // too much memory. 3913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, RemoteViews> mIndexRemoteViews; 3923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of indices that have been explicitly requested by the collection view 3943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashSet<Integer> mRequestedIndices; 3953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of indices to load, including those explicitly requested, as well as those 3973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // determined by the preloading algorithm to be prefetched 3983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashSet<Integer> mLoadIndices; 3993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The lower and upper bounds of the preloaded range 4013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mPreloadLowerBound; 4023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mPreloadUpperBound; 4033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The bounds of this fixed cache, we will try and fill as many items into the cache up to 4053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the maxCount number of items, or the maxSize memory usage. 4063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The maxCountSlack is used to determine if a new position in the cache to be loaded is 4073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // sufficiently ouside the old set, prompting a shifting of the "window" of items to be 4083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // preloaded. 4093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mMaxCount; 4103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mMaxCountSlack; 4113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static final float sMaxCountSlackPercent = 0.75f; 4123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static final int sMaxMemoryUsage = 1024 * 1024; 4133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public FixedSizeRemoteViewsCache(int maxCacheSize) { 4153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMaxCount = maxCacheSize; 4163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMaxCountSlack = Math.round(sMaxCountSlackPercent * (mMaxCount / 2)); 4173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = 0; 4183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = -1; 4193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMetaData = new RemoteViewsMetaData(); 4203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexMetaData = new HashMap<Integer, RemoteViewsIndexMetaData>(); 4213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews = new HashMap<Integer, RemoteViews>(); 4223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices = new HashSet<Integer>(); 4233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices = new HashSet<Integer>(); 4243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 425499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 4263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void insert(int position, RemoteViews v, long itemId) { 4273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Trim the cache if we go beyond the count 4283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexRemoteViews.size() >= mMaxCount) { 4293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.remove(getFarthestPositionFrom(position)); 430499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 431499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 4323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Trim the cache if we go beyond the available memory size constraints 4333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung while (getRemoteViewsBitmapMemoryUsage() >= sMaxMemoryUsage) { 4343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Note: This is currently the most naive mechanism for deciding what to prune when 4353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // we hit the memory limit. In the future, we may want to calculate which index to 4363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // remove based on both its position as well as it's current memory usage, as well 4373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // as whether it was directly requested vs. whether it was preloaded by our caching 4383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // mechanism. 4393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.remove(getFarthestPositionFrom(position)); 440499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Update the metadata cache 4433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexMetaData.containsKey(position)) { 4443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsIndexMetaData metaData = mIndexMetaData.get(position); 4453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.set(v, itemId); 4463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 4473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexMetaData.put(position, new RemoteViewsIndexMetaData(v, itemId)); 448499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.put(position, v); 4503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 451499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 4523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsMetaData getMetaData() { 4533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mMetaData; 4543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 4553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViews getRemoteViewsAt(int position) { 4563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexRemoteViews.containsKey(position)) { 4573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexRemoteViews.get(position); 4583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 459499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return null; 460499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4613ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsIndexMetaData getMetaDataAt(int position) { 4623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexMetaData.containsKey(position)) { 4633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexMetaData.get(position); 464499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return null; 4663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 467499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 4683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getRemoteViewsBitmapMemoryUsage() { 4693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Calculate the memory usage of all the RemoteViews bitmaps being cached 4703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int mem = 0; 4713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (Integer i : mIndexRemoteViews.keySet()) { 4723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViews v = mIndexRemoteViews.get(i); 473aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung if (v != null) { 474aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung mem += v.estimateBitmapMemoryUsage(); 475aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung } 476499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mem; 478499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getFarthestPositionFrom(int pos) { 4803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Find the index farthest away and remove that 4813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int maxDist = 0; 4823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int maxDistIndex = -1; 4833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (int i : mIndexRemoteViews.keySet()) { 4843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int dist = Math.abs(i-pos); 4853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (dist > maxDist) { 4863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung maxDistIndex = i; 4873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung maxDist = dist; 488c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 489c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 4903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return maxDistIndex; 491c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 492c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 4933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void queueRequestedPositionToLoad(int position) { 4943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 4953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.add(position); 4963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.add(position); 497499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 498499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 4993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void queuePositionsToBePreloadedFromRequestedPosition(int position) { 5003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Check if we need to preload any items 5013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mPreloadLowerBound <= position && position <= mPreloadUpperBound) { 5023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int center = (mPreloadUpperBound + mPreloadLowerBound) / 2; 5033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (Math.abs(position - center) < mMaxCountSlack) { 5043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 505499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 506499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 507499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int count = 0; 5093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mMetaData) { 5103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung count = mMetaData.count; 511499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 5133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.clear(); 5143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add all the requested indices 5163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.addAll(mRequestedIndices); 5173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add all the preload indices 5193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int halfMaxCount = mMaxCount / 2; 5203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = position - halfMaxCount; 5213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = position + halfMaxCount; 5223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int effectiveLowerBound = Math.max(0, mPreloadLowerBound); 5233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int effectiveUpperBound = Math.min(mPreloadUpperBound, count - 1); 5243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (int i = effectiveLowerBound; i <= effectiveUpperBound; ++i) { 5253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.add(i); 5263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 527499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // But remove all the indices that have already been loaded and are cached 5293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.removeAll(mIndexRemoteViews.keySet()); 530499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 531499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public int getNextIndexToLoad() { 5333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We try and prioritize items that have been requested directly, instead 5343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // of items that are loaded as a result of the caching mechanism 5353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 5363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Prioritize requested indices to be loaded first 5373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (!mRequestedIndices.isEmpty()) { 5383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Integer i = mRequestedIndices.iterator().next(); 5393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.remove(i); 5403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.remove(i); 5413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return i.intValue(); 5423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 543499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Otherwise, preload other indices as necessary 5453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (!mLoadIndices.isEmpty()) { 5463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Integer i = mLoadIndices.iterator().next(); 5473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.remove(i); 5483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return i.intValue(); 5493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 550499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return -1; 552c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 5533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 554c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 5553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public boolean containsRemoteViewAt(int position) { 5563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexRemoteViews.containsKey(position); 5573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 5583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public boolean containsMetaDataAt(int position) { 5593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexMetaData.containsKey(position); 5603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 561499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void reset() { 56361ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // Note: We do not try and reset the meta data, since that information is still used by 56461ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // collection views to validate it's own contents (and will be re-requested if the data 56561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // is invalidated through the notifyDataSetChanged() flow). 56661ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 5673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = 0; 5683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = -1; 5693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.clear(); 5703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexMetaData.clear(); 5713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 5723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.clear(); 5733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.clear(); 574499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 575499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 576499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 577499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 578499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public RemoteViewsAdapter(Context context, Intent intent, RemoteAdapterConnectionCallback callback) { 579499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mContext = context; 580499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mIntent = intent; 581a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung mLayoutInflater = LayoutInflater.from(context); 5829b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung if (mIntent == null) { 5839b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung throw new IllegalArgumentException("Non-null Intent must be specified."); 5849b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 5853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedViews = new RemoteViewsFrameLayoutRefSet(); 586499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 587499cb9f516062b654952d282f211bee44c31a3c2Winson Chung // initialize the worker thread 588499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerThread = new HandlerThread("RemoteViewsCache-loader"); 589499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerThread.start(); 590499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerQueue = new Handler(mWorkerThread.getLooper()); 591499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mMainQueue = new Handler(Looper.myLooper()); 592499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 593499cb9f516062b654952d282f211bee44c31a3c2Winson Chung // initialize the cache and the service connection on startup 5943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCache = new FixedSizeRemoteViewsCache(50); 5953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCallback = new WeakReference<RemoteAdapterConnectionCallback>(callback); 5963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mServiceConnection = new RemoteViewsAdapterServiceConnection(this); 597499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 598499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 599499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 6003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private void loadNextIndexInBackground() { 6013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mWorkerQueue.post(new Runnable() { 6023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung @Override 6033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void run() { 6043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Get the next index to load 6053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int position = -1; 6063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 6073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung position = mCache.getNextIndexToLoad(); 6083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (position > -1) { 6103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Load the item, and notify any existing RemoteViewsFrameLayouts 6113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung updateRemoteViews(position); 6123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Queue up for the next one to load 6143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung loadNextIndexInBackground(); 6153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 6183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private void updateMetaData() { 6213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mServiceConnection.isConnected()) { 6223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung try { 6233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 6243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // get the properties/first view (so that we can use it to 6263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // measure our dummy views) 6273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung boolean hasStableIds = factory.hasStableIds(); 6283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int viewTypeCount = factory.getViewTypeCount(); 6293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int count = factory.getCount(); 6303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews loadingView = factory.getLoadingView(); 6313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews firstView = null; 6323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if ((count > 0) && (loadingView == null)) { 6333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung firstView = factory.getViewAt(0); 6343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 6363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 6373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.hasStableIds = hasStableIds; 6383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.viewTypeCount = viewTypeCount + 1; 6393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.count = count; 6403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.setLoadingViewTemplates(loadingView, firstView); 6413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } catch (Exception e) { 6433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // print the error 6443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Log.e(TAG, "Error in requestMetaData(): " + e.getMessage()); 6453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // reset any members after the failed call 6473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 6483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 6493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung metaData.reset(); 6503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private void updateRemoteViews(final int position) { 6563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mServiceConnection.isConnected()) { 6573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 6583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Load the item information from the remote service 6603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews remoteViews = null; 6613ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung long itemId = 0; 6623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung try { 6633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung remoteViews = factory.getViewAt(position); 6643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung itemId = factory.getItemId(position); 6653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } catch (Exception e) { 6663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Print the error 667490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen Log.e(TAG, "Error in updateRemoteViews(" + position + "): " + 6683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung e.getMessage()); 6693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung e.printStackTrace(); 6703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Return early to prevent additional work in re-centering the view cache, and 6723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // swapping from the loading view 6733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 6743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 676490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen if (remoteViews == null) { 677490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen // If a null view was returned, we break early to prevent it from getting 678490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen // into our cache and causing problems later. The effect is that the child at this 679490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen // position will remain as a loading view until it is updated. 680490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen Log.e(TAG, "Error in updateRemoteViews(" + position + "): " + " null RemoteViews " + 681490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen "returned from RemoteViewsFactory."); 682490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen return; 683490127df193ecaa4dacf241a1a6b72ed6e5b0a0fAdam Cohen } 6843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 6853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Cache the RemoteViews we loaded 6863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCache.insert(position, remoteViews, itemId); 6873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Notify all the views that we have previously returned for this index that 6893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // there is new data for it. 6903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViews rv = remoteViews; 6913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final int typeId = mCache.getMetaDataAt(position).typeId; 6923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMainQueue.post(new Runnable() { 6933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung @Override 6943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void run() { 6953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedViews.notifyOnRemoteViewsLoaded(position, rv, typeId); 6963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 6983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 700499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 701499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 7029b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung public Intent getRemoteViewsServiceIntent() { 7039b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung return mIntent; 7049b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 7059b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung 706499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getCount() { 707499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 7083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 7093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 7103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.count; 7113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 712499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 713499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 714499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public Object getItem(int position) { 7153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Disallow arbitrary object to be associated with an item for the time being 716499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return null; 717499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 718499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 719499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public long getItemId(int position) { 720499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 7213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 7223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mCache.containsMetaDataAt(position)) { 7233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mCache.getMetaDataAt(position).itemId; 7243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return 0; 7263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 727499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 728499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 729499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getItemViewType(int position) { 730499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 7313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId = 0; 7323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 7333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mCache.containsMetaDataAt(position)) { 7343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = mCache.getMetaDataAt(position).typeId; 7353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 7363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return 0; 7373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 7413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 7423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.getMappedViewType(typeId); 7433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 7473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Returns the item type id for the specified convert view. Returns -1 if the convert view 7483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * is invalid. 7493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 7503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getConvertViewTypeId(View convertView) { 7513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId = -1; 752a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (convertView != null) { 753a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen Object tag = convertView.getTag(com.android.internal.R.id.rowTypeId); 754a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (tag != null) { 755a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen typeId = (Integer) tag; 756a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 7573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return typeId; 759499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 760499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 761499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public View getView(int position, View convertView, ViewGroup parent) { 762499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 7633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mServiceConnection.isConnected()) { 7643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // "Request" an index so that we can queue it for loading, initiate subsequent 7653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // preloading, etc. 7663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 7673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Queue up other indices to be preloaded based on this position 7683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCache.queuePositionsToBePreloadedFromRequestedPosition(position); 7693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViewsFrameLayout layout = (RemoteViewsFrameLayout) convertView; 7713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung View convertViewChild = null; 7723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int convertViewTypeId = 0; 7733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (convertView != null) { 7743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung convertViewChild = layout.getChildAt(0); 7753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung convertViewTypeId = getConvertViewTypeId(convertViewChild); 7763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Second, we try and retrieve the RemoteViews from the cache, returning a loading 7793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // view and queueing it to be loaded if it has not already been loaded. 7803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mCache.containsRemoteViewAt(position)) { 7813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Context context = parent.getContext(); 7823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews rv = mCache.getRemoteViewsAt(position); 7833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId = mCache.getMetaDataAt(position).typeId; 7843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Reuse the convert view where possible 7863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (convertView != null) { 7873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (convertViewTypeId == typeId) { 7883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung rv.reapply(context, convertViewChild); 7893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return convertView; 7903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Otherwise, create a new view to be returned 7943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung View newView = rv.apply(context, parent); 795a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen newView.setTagInternal(com.android.internal.R.id.rowTypeId, new Integer(typeId)); 7963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (convertView != null) { 7973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung layout.removeAllViews(); 7983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 7993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung layout = new RemoteViewsFrameLayout(context); 8003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung layout.addView(newView); 8023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return layout; 8033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 8043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // If the cache does not have the RemoteViews at this position, then create a 8053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // loading view and queue the actual position to be loaded in the background 8063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViewsFrameLayout loadingView = null; 8073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 8083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 8093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung loadingView = metaData.createLoadingView(position, convertView, parent); 8103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 8123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedViews.add(position, loadingView); 8133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCache.queueRequestedPositionToLoad(position); 8143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung loadNextIndexInBackground(); 8153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 8163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return loadingView; 8173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return new View(parent.getContext()); 821499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 822499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 823499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getViewTypeCount() { 824499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 8253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 8263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 8273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.viewTypeCount; 8283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 829499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 830499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 831499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public boolean hasStableIds() { 832499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 8333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 8343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 8353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.hasStableIds; 8363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 837499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 838499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 839499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public boolean isEmpty() { 840499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return getCount() <= 0; 841499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 842499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 843499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void notifyDataSetChanged() { 8446364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung mWorkerQueue.post(new Runnable() { 8456364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung @Override 8466364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung public void run() { 8476364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Complete the actual notifyDataSetChanged() call initiated earlier 8486364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung if (mServiceConnection.isConnected()) { 8496364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 8506364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung try { 8516364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung factory.onDataSetChanged(); 8526364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } catch (Exception e) { 8536364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung Log.e(TAG, "Error in updateNotifyDataSetChanged(): " + e.getMessage()); 8546364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung 8556364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Return early to prevent from further being notified (since nothing has 8566364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // changed) 8576364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung return; 8586364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } 8596364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } 8603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 8616364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Flush the cache so that we can reload new items from the service 8626364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung synchronized (mCache) { 8636364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung mCache.reset(); 8646364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } 86561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 8666364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Re-request the new metadata (only after the notification to the factory) 8676364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung updateMetaData(); 8683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 8696364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Propagate the notification back to the base adapter 8706364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung mMainQueue.post(new Runnable() { 8716364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung @Override 8726364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung public void run() { 8736364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung superNotifyDataSetChanged(); 8746364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } 8756364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung }); 8763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 8786364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung 8796364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // Note: we do not call super.notifyDataSetChanged() until the RemoteViewsFactory has had 8806364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung // a chance to update itself and return new meta data associated with the new data. 8813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 8833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private void superNotifyDataSetChanged() { 884499cb9f516062b654952d282f211bee44c31a3c2Winson Chung super.notifyDataSetChanged(); 885499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 886499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 887499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private boolean requestBindService() { 888499cb9f516062b654952d282f211bee44c31a3c2Winson Chung // try binding the service (which will start it if it's not already running) 889499cb9f516062b654952d282f211bee44c31a3c2Winson Chung if (!mServiceConnection.isConnected()) { 890499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mContext.bindService(mIntent, mServiceConnection, Context.BIND_AUTO_CREATE); 891499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 892499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 893499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return mServiceConnection.isConnected(); 894499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 895499cb9f516062b654952d282f211bee44c31a3c2Winson Chung} 896