RemoteViewsAdapter.java revision 4c994986202b5b668a6377a9ad47aa5345046db9
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 Chung 2481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chungimport android.appwidget.AppWidgetManager; 25499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.Context; 26499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.content.Intent; 27499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.Handler; 28499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.HandlerThread; 29499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.IBinder; 30499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.os.Looper; 3181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chungimport android.os.Message; 322625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohenimport android.os.RemoteException; 33fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chungimport android.util.Log; 34a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chungimport android.view.LayoutInflater; 35499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport android.view.View; 36181d2e3172f24d8c920cbe4b446e8f938ccdc8bbAdam Cohenimport android.view.View.MeasureSpec; 3784bbb020217adcdfe0694c44ccab57e208ffde16Winson Chungimport android.view.ViewGroup; 38499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3981f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chungimport com.android.internal.widget.IRemoteViewsAdapterConnection; 40499cb9f516062b654952d282f211bee44c31a3c2Winson Chungimport com.android.internal.widget.IRemoteViewsFactory; 41499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 42499cb9f516062b654952d282f211bee44c31a3c2Winson Chung/** 43499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * An adapter to a RemoteViewsService which fetches and caches RemoteViews 44499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * to be later inflated as child views. 45499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 46499cb9f516062b654952d282f211bee44c31a3c2Winson Chung/** @hide */ 4781f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chungpublic class RemoteViewsAdapter extends BaseAdapter implements Handler.Callback { 48fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chung private static final String TAG = "RemoteViewsAdapter"; 49499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // The max number of items in the cache 51b90a91c633e99d4559095184af27d1416541d3c0Winson Chung private static final int sDefaultCacheSize = 40; 5281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // The delay (in millis) to wait until attempting to unbind from a service after a request. 5381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // This ensures that we don't stay continually bound to the service and that it can be destroyed 5481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // if we need the memory elsewhere in the system. 55b90a91c633e99d4559095184af27d1416541d3c0Winson Chung private static final int sUnbindServiceDelay = 5000; 56b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen 57b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // Default height for the default loading view, in case we cannot get inflate the first view 58b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen private static final int sDefaultLoadingViewHeight = 50; 59b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen 6081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Type defs for controlling different messages across the main and worker message queues 6181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private static final int sDefaultMessageType = 0; 6281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private static final int sUnbindServiceMessageType = 1; 6381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung 6481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private final Context mContext; 6581f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private final Intent mIntent; 6681f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private final int mAppWidgetId; 67a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung private LayoutInflater mLayoutInflater; 68499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private RemoteViewsAdapterServiceConnection mServiceConnection; 693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private WeakReference<RemoteAdapterConnectionCallback> mCallback; 703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private FixedSizeRemoteViewsCache mCache; 71b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen private int mVisibleWindowLowerBound; 72b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen private int mVisibleWindowUpperBound; 733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 7416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // A flag to determine whether we should notify data set changed after we connect 7516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private boolean mNotifyDataSetChangedAfterOnServiceConnected = false; 7616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of requested views that are to be notified when the associated RemoteViews are 783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // loaded. 793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private RemoteViewsFrameLayoutRefSet mRequestedViews; 80499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 81499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private HandlerThread mWorkerThread; 82499cb9f516062b654952d282f211bee44c31a3c2Winson Chung // items may be interrupted within the normally processed queues 83499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Handler mWorkerQueue; 84499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private Handler mMainQueue; 85499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 86499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 87499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * An interface for the RemoteAdapter to notify other classes when adapters 88499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * are actually connected to/disconnected from their actual services. 89499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 90499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public interface RemoteAdapterConnectionCallback { 9116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung /** 9216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung * @return whether the adapter was set or not. 9316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung */ 9416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public boolean onRemoteAdapterConnected(); 95499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 96499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void onRemoteAdapterDisconnected(); 972148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen 982148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen /** 992148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen * This defers a notifyDataSetChanged on the pending RemoteViewsAdapter if it has not 1002148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen * connected yet. 1012148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen */ 1022148d43eb23c702e834c93ae427f822f32d280a2Adam Cohen public void deferNotifyDataSetChanged(); 103499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 104499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 105499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 106499cb9f516062b654952d282f211bee44c31a3c2Winson Chung * The service connection that gets populated when the RemoteViewsService is 1073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * bound. This must be a static inner class to ensure that no references to the outer 1083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * RemoteViewsAdapter instance is retained (this would prevent the RemoteViewsAdapter from being 1093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * garbage collected, and would cause us to leak activities due to the caching mechanism for 1103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * FrameLayouts in the adapter). 111499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 11281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private static class RemoteViewsAdapterServiceConnection extends 11381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung IRemoteViewsAdapterConnection.Stub { 11416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private boolean mIsConnected; 11516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private boolean mIsConnecting; 1163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private WeakReference<RemoteViewsAdapter> mAdapter; 117499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private IRemoteViewsFactory mRemoteViewsFactory; 118499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsAdapterServiceConnection(RemoteViewsAdapter adapter) { 1203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mAdapter = new WeakReference<RemoteViewsAdapter>(adapter); 121499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 122499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 12316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized void bind(Context context, int appWidgetId, Intent intent) { 12416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (!mIsConnecting) { 12516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung try { 12616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final AppWidgetManager mgr = AppWidgetManager.getInstance(context); 12716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mgr.bindRemoteViewsService(appWidgetId, intent, asBinder()); 12816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = true; 12916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } catch (Exception e) { 13016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e("RemoteViewsAdapterServiceConnection", "bind(): " + e.getMessage()); 13116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = false; 13216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnected = false; 13316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 13416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 13516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 13616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 13716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized void unbind(Context context, int appWidgetId, Intent intent) { 13816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung try { 13916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final AppWidgetManager mgr = AppWidgetManager.getInstance(context); 14016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mgr.unbindRemoteViewsService(appWidgetId, intent); 14116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = false; 14216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } catch (Exception e) { 14316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e("RemoteViewsAdapterServiceConnection", "unbind(): " + e.getMessage()); 14416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = false; 14516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnected = false; 14616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 14716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 14816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 14916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized void onServiceConnected(IBinder service) { 150499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mRemoteViewsFactory = IRemoteViewsFactory.Stub.asInterface(service); 151c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 15216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Remove any deferred unbind messages 1533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsAdapter adapter = mAdapter.get(); 1543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (adapter == null) return; 15516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 15616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Queue up work that we need to do for the callback to run 1573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mWorkerQueue.post(new Runnable() { 158499cb9f516062b654952d282f211bee44c31a3c2Winson Chung @Override 159499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public void run() { 16016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (adapter.mNotifyDataSetChangedAfterOnServiceConnected) { 16116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Handle queued notifyDataSetChanged() if necessary 16216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.onNotifyDataSetChanged(); 16316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } else { 1643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung IRemoteViewsFactory factory = 1653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mServiceConnection.getRemoteViewsFactory(); 1663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung try { 16716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (!factory.isCreated()) { 16816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // We only call onDataSetChanged() if this is the factory was just 16916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // create in response to this bind 17016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung factory.onDataSetChanged(); 17116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 1722625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RemoteException e) { 1733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Log.e(TAG, "Error notifying factory of data set changed in " + 1743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung "onServiceConnected(): " + e.getMessage()); 1753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Return early to prevent anything further from being notified 1773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // (effectively nothing has changed) 1783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 1792625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RuntimeException e) { 1802625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen Log.e(TAG, "Error notifying factory of data set changed in " + 1812625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen "onServiceConnected(): " + e.getMessage()); 182499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Request meta data so that we have up to date data when calling back to 1853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the remote adapter callback 18616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.updateTemporaryMetaData(); 1873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 18816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Notify the host that we've connected 18961ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung adapter.mMainQueue.post(new Runnable() { 1903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung @Override 1913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void run() { 19216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (adapter.mCache) { 19316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.mCache.commitTemporaryMetaData(); 19416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 19516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 1963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteAdapterConnectionCallback callback = 1973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung adapter.mCallback.get(); 1983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (callback != null) { 1993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung callback.onRemoteAdapterConnected(); 2003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 2013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 2023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 2033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 20416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 20516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Enqueue unbind message 20616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.enqueueDeferredUnbindServiceMessage(); 20716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnected = true; 20816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = false; 209499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 210499cb9f516062b654952d282f211bee44c31a3c2Winson Chung }); 211499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 212499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 21316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized void onServiceDisconnected() { 21416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnected = false; 21516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mIsConnecting = false; 2163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRemoteViewsFactory = null; 217499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 21816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Clear the main/worker queues 2193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsAdapter adapter = mAdapter.get(); 2203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (adapter == null) return; 221c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 22216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.mMainQueue.post(new Runnable() { 22316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung @Override 22416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void run() { 22516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Dequeue any unbind messages 22616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung adapter.mMainQueue.removeMessages(sUnbindServiceMessageType); 2273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 22816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final RemoteAdapterConnectionCallback callback = adapter.mCallback.get(); 22916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (callback != null) { 23016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung callback.onRemoteAdapterDisconnected(); 23116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 23216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 23316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung }); 234499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 235499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 23616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized IRemoteViewsFactory getRemoteViewsFactory() { 237499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return mRemoteViewsFactory; 238499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 239499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 24016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public synchronized boolean isConnected() { 24116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return mIsConnected; 242499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 243499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 244499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 245499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 2463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * A FrameLayout which contains a loading view, and manages the re/applying of RemoteViews when 2473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * they are loaded. 248499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 2493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsFrameLayout extends FrameLayout { 2503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsFrameLayout(Context context) { 2513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung super(context); 2523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 253499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 254499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 2553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Updates this RemoteViewsFrameLayout depending on the view that was loaded. 2563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * @param view the RemoteViews that was loaded. If null, the RemoteViews was not loaded 2573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * successfully. 258499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 2593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void onRemoteViewsLoaded(RemoteViews view) { 26061ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung try { 26161ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // Remove all the children of this layout first 26261ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung removeAllViews(); 26361ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung addView(view.apply(getContext(), this)); 26461ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung } catch (Exception e) { 26561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung Log.e(TAG, "Failed to apply RemoteViews."); 26661ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung } 2673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 2683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 269499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 2713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Stores the references of all the RemoteViewsFrameLayouts that have been returned by the 2723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * adapter that have not yet had their RemoteViews loaded. 2733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 2743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsFrameLayoutRefSet { 2753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, LinkedList<RemoteViewsFrameLayout>> mReferences; 276499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 2773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsFrameLayoutRefSet() { 2783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences = new HashMap<Integer, LinkedList<RemoteViewsFrameLayout>>(); 279499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 280499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 281499cb9f516062b654952d282f211bee44c31a3c2Winson Chung /** 2823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Adds a new reference to a RemoteViewsFrameLayout returned by the adapter. 283499cb9f516062b654952d282f211bee44c31a3c2Winson Chung */ 2843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void add(int position, RemoteViewsFrameLayout layout) { 2853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Integer pos = position; 2863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung LinkedList<RemoteViewsFrameLayout> refs; 2873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create the list if necessary 2893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mReferences.containsKey(pos)) { 2903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs = mReferences.get(pos); 2913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 2923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs = new LinkedList<RemoteViewsFrameLayout>(); 2933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.put(pos, refs); 294499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 2953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 2963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add the references to the list 2973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs.add(layout); 298499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 299499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 3013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Notifies each of the RemoteViewsFrameLayouts associated with a particular position that 3023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * the associated RemoteViews has loaded. 3033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 3043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void notifyOnRemoteViewsLoaded(int position, RemoteViews view, int typeId) { 30561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung if (view == null) return; 30661ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 3073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Integer pos = position; 3083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mReferences.containsKey(pos)) { 3093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Notify all the references for that position of the newly loaded RemoteViews 3103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final LinkedList<RemoteViewsFrameLayout> refs = mReferences.get(pos); 3113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (final RemoteViewsFrameLayout ref : refs) { 3123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung ref.onRemoteViewsLoaded(view); 3133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 3143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung refs.clear(); 315499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Remove this set from the original mapping 3173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.remove(pos); 318499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 319499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 320499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 3223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Removes all references to all RemoteViewsFrameLayouts returned by the adapter. 3233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 3243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void clear() { 3253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We currently just clear the references, and leave all the previous layouts returned 3263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // in their default state of the loading view. 3273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mReferences.clear(); 328499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 3293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 330499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 3323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * The meta-data associated with the cache in it's current state. 3333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 3343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsMetaData { 3353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int count; 3363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int viewTypeCount; 3373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung boolean hasStableIds; 3383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Used to determine how to construct loading views. If a loading view is not specified 3403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // by the user, then we try and load the first view, and use its height as the height for 3413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the default loading view. 3423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews mUserLoadingView; 3433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViews mFirstView; 3443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int mFirstViewHeight; 3453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // A mapping from type id to a set of unique type ids 34716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private final HashMap<Integer, Integer> mTypeIdIndexMap = new HashMap<Integer, Integer>(); 3483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsMetaData() { 3503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung reset(); 351499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 352499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 35316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void set(RemoteViewsMetaData d) { 35416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (d) { 35516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung count = d.count; 35616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung viewTypeCount = d.viewTypeCount; 35716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung hasStableIds = d.hasStableIds; 35816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung setLoadingViewTemplates(d.mUserLoadingView, d.mFirstView); 35916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 36016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 36116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 3623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void reset() { 3633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung count = 0; 36416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 3653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // by default there is at least one dummy view type 3663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung viewTypeCount = 1; 3673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung hasStableIds = true; 3683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mUserLoadingView = null; 3693ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstView = null; 3703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstViewHeight = 0; 37116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mTypeIdIndexMap.clear(); 372499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 373499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void setLoadingViewTemplates(RemoteViews loadingView, RemoteViews firstView) { 3753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mUserLoadingView = loadingView; 3763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (firstView != null) { 3773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstView = firstView; 3783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mFirstViewHeight = -1; 379499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 380499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 381499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 3823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public int getMappedViewType(int typeId) { 3833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mTypeIdIndexMap.containsKey(typeId)) { 3843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mTypeIdIndexMap.get(typeId); 3853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 3863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We +1 because the loading view always has view type id of 0 3873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int incrementalTypeId = mTypeIdIndexMap.size() + 1; 3883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mTypeIdIndexMap.put(typeId, incrementalTypeId); 3893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return incrementalTypeId; 3906394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3916394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 3926394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 3933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private RemoteViewsFrameLayout createLoadingView(int position, View convertView, 3943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung ViewGroup parent) { 3953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create and return a new FrameLayout, and setup the references for this position 3963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final Context context = parent.getContext(); 3973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung RemoteViewsFrameLayout layout = new RemoteViewsFrameLayout(context); 3983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 3993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Create a new loading view 4003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 401b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen boolean customLoadingViewAvailable = false; 402b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen 4033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mUserLoadingView != null) { 404b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // Try to inflate user-specified loading view 405b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen try { 406b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen View loadingView = mUserLoadingView.apply(parent.getContext(), parent); 407b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen loadingView.setTagInternal(com.android.internal.R.id.rowTypeId, 408b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen new Integer(0)); 409b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen layout.addView(loadingView); 410b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen customLoadingViewAvailable = true; 411b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } catch (Exception e) { 412b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen Log.w(TAG, "Error inflating custom loading view, using default loading" + 413b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen "view instead", e); 414b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 415b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 416b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen if (!customLoadingViewAvailable) { 4173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // A default loading view 4183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Use the size of the first row as a guide for the size of the loading view 4193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mFirstViewHeight < 0) { 420b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen try { 421b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen View firstView = mFirstView.apply(parent.getContext(), parent); 422b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen firstView.measure( 423b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 424b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); 425b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen mFirstViewHeight = firstView.getMeasuredHeight(); 426b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen mFirstView = null; 427b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } catch (Exception e) { 428b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen float density = mContext.getResources().getDisplayMetrics().density; 429b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen mFirstViewHeight = (int) 430b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen Math.round(sDefaultLoadingViewHeight * density); 431b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen mFirstView = null; 432b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen Log.w(TAG, "Error inflating first RemoteViews" + e); 433b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 4343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 4353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Compose the loading view text 437a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung TextView loadingTextView = (TextView) mLayoutInflater.inflate( 438fb60386b46d0c6216c765c10bd33ac42ca780917Adam Cohen com.android.internal.R.layout.remote_views_adapter_default_loading_view, 439fb60386b46d0c6216c765c10bd33ac42ca780917Adam Cohen layout, false); 440a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung loadingTextView.setHeight(mFirstViewHeight); 441a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung loadingTextView.setTag(new Integer(0)); 442a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung 443a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung layout.addView(loadingTextView); 444fbc3590f40436e372df198c2d6b27877ae8952f1Winson Chung } 4456394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 4466394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 4473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return layout; 4486394c0e52cf641d93f678fd052499aa952e3595dWinson Chung } 4493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 4506394c0e52cf641d93f678fd052499aa952e3595dWinson Chung 4513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 4523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * The meta-data associated with a single item in the cache. 4533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 4543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class RemoteViewsIndexMetaData { 4553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId; 4563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung long itemId; 457b90a91c633e99d4559095184af27d1416541d3c0Winson Chung boolean isRequested; 458499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 459b90a91c633e99d4559095184af27d1416541d3c0Winson Chung public RemoteViewsIndexMetaData(RemoteViews v, long itemId, boolean requested) { 460b90a91c633e99d4559095184af27d1416541d3c0Winson Chung set(v, itemId, requested); 461499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 462499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 463b90a91c633e99d4559095184af27d1416541d3c0Winson Chung public void set(RemoteViews v, long id, boolean requested) { 4643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung itemId = id; 4653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (v != null) 4663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = v.getLayoutId(); 4673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung else 4683ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = 0; 469b90a91c633e99d4559095184af27d1416541d3c0Winson Chung isRequested = requested; 4703ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 4713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 472499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 4733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 4743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * 4753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 4763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private class FixedSizeRemoteViewsCache { 4773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static final String TAG = "FixedSizeRemoteViewsCache"; 4783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The meta data related to all the RemoteViews, ie. count, is stable, etc. 4804c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen // The meta data objects are made final so that they can be locked on independently 4814c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen // of the FixedSizeRemoteViewsCache. If we ever lock on both meta data objects, it is in 4824c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen // the order mTemporaryMetaData followed by mMetaData. 4834c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen private final RemoteViewsMetaData mMetaData; 4844c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen private final RemoteViewsMetaData mTemporaryMetaData; 4853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The cache/mapping of position to RemoteViewsMetaData. This set is guaranteed to be 4873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // greater than or equal to the set of RemoteViews. 4883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Note: The reason that we keep this separate from the RemoteViews cache below is that this 4893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // we still need to be able to access the mapping of position to meta data, without keeping 4903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the heavy RemoteViews around. The RemoteViews cache is trimmed to fixed constraints wrt. 4913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // memory and size, but this metadata cache will retain information until the data at the 4923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // position is guaranteed as not being necessary any more (usually on notifyDataSetChanged). 4933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, RemoteViewsIndexMetaData> mIndexMetaData; 4943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The cache of actual RemoteViews, which may be pruned if the cache gets too large, or uses 4963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // too much memory. 4973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashMap<Integer, RemoteViews> mIndexRemoteViews; 4983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 4993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of indices that have been explicitly requested by the collection view 5003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashSet<Integer> mRequestedIndices; 5013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 502b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // We keep a reference of the last requested index to determine which item to prune the 503b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // farthest items from when we hit the memory limit 504b90a91c633e99d4559095184af27d1416541d3c0Winson Chung private int mLastRequestedIndex; 505b90a91c633e99d4559095184af27d1416541d3c0Winson Chung 5063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The set of indices to load, including those explicitly requested, as well as those 5073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // determined by the preloading algorithm to be prefetched 5083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private HashSet<Integer> mLoadIndices; 5093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The lower and upper bounds of the preloaded range 5113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mPreloadLowerBound; 5123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mPreloadUpperBound; 5133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The bounds of this fixed cache, we will try and fill as many items into the cache up to 5153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // the maxCount number of items, or the maxSize memory usage. 5163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // The maxCountSlack is used to determine if a new position in the cache to be loaded is 5173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // sufficiently ouside the old set, prompting a shifting of the "window" of items to be 5183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // preloaded. 5193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mMaxCount; 5203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int mMaxCountSlack; 5213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private static final float sMaxCountSlackPercent = 0.75f; 522b90a91c633e99d4559095184af27d1416541d3c0Winson Chung private static final int sMaxMemoryLimitInBytes = 2 * 1024 * 1024; 5233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public FixedSizeRemoteViewsCache(int maxCacheSize) { 5253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMaxCount = maxCacheSize; 5263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMaxCountSlack = Math.round(sMaxCountSlackPercent * (mMaxCount / 2)); 5273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = 0; 5283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = -1; 5293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mMetaData = new RemoteViewsMetaData(); 53016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mTemporaryMetaData = new RemoteViewsMetaData(); 5313ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexMetaData = new HashMap<Integer, RemoteViewsIndexMetaData>(); 5323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews = new HashMap<Integer, RemoteViews>(); 5333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices = new HashSet<Integer>(); 534b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mLastRequestedIndex = -1; 5353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices = new HashSet<Integer>(); 5363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 537499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 538b90a91c633e99d4559095184af27d1416541d3c0Winson Chung public void insert(int position, RemoteViews v, long itemId, boolean isRequested) { 5393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Trim the cache if we go beyond the count 5403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexRemoteViews.size() >= mMaxCount) { 5413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.remove(getFarthestPositionFrom(position)); 542499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 543499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Trim the cache if we go beyond the available memory size constraints 545b90a91c633e99d4559095184af27d1416541d3c0Winson Chung int pruneFromPosition = (mLastRequestedIndex > -1) ? mLastRequestedIndex : position; 546b90a91c633e99d4559095184af27d1416541d3c0Winson Chung while (getRemoteViewsBitmapMemoryUsage() >= sMaxMemoryLimitInBytes) { 5473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Note: This is currently the most naive mechanism for deciding what to prune when 5483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // we hit the memory limit. In the future, we may want to calculate which index to 5493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // remove based on both its position as well as it's current memory usage, as well 5503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // as whether it was directly requested vs. whether it was preloaded by our caching 5513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // mechanism. 552b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mIndexRemoteViews.remove(getFarthestPositionFrom(pruneFromPosition)); 553499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 5553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Update the metadata cache 5563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexMetaData.containsKey(position)) { 5573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsIndexMetaData metaData = mIndexMetaData.get(position); 558b90a91c633e99d4559095184af27d1416541d3c0Winson Chung metaData.set(v, itemId, isRequested); 5593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 560b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mIndexMetaData.put(position, new RemoteViewsIndexMetaData(v, itemId, isRequested)); 561499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.put(position, v); 5633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 564499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 5653ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsMetaData getMetaData() { 5663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mMetaData; 5673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 56816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public RemoteViewsMetaData getTemporaryMetaData() { 56916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return mTemporaryMetaData; 57016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 5713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViews getRemoteViewsAt(int position) { 5723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexRemoteViews.containsKey(position)) { 5733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexRemoteViews.get(position); 5743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 575499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return null; 576499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public RemoteViewsIndexMetaData getMetaDataAt(int position) { 5783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mIndexMetaData.containsKey(position)) { 5793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexMetaData.get(position); 580499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 5813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return null; 5823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 583499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 58416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void commitTemporaryMetaData() { 58516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mTemporaryMetaData) { 58616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mMetaData) { 58716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mMetaData.set(mTemporaryMetaData); 58816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 58916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 59016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 59116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 5923ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getRemoteViewsBitmapMemoryUsage() { 5933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Calculate the memory usage of all the RemoteViews bitmaps being cached 5943ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int mem = 0; 5953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (Integer i : mIndexRemoteViews.keySet()) { 5963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViews v = mIndexRemoteViews.get(i); 597aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung if (v != null) { 598aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung mem += v.estimateBitmapMemoryUsage(); 599aaffa8b4d4d3530e02cd6a0619b0c1485c133e55Winson Chung } 600499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 6013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mem; 602499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 6033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getFarthestPositionFrom(int pos) { 6043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Find the index farthest away and remove that 6053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int maxDist = 0; 6063ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int maxDistIndex = -1; 607b90a91c633e99d4559095184af27d1416541d3c0Winson Chung int maxDistNonRequested = 0; 608b90a91c633e99d4559095184af27d1416541d3c0Winson Chung int maxDistIndexNonRequested = -1; 6093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (int i : mIndexRemoteViews.keySet()) { 6103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int dist = Math.abs(i-pos); 611b90a91c633e99d4559095184af27d1416541d3c0Winson Chung if (dist > maxDistNonRequested && !mIndexMetaData.get(i).isRequested) { 612b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // maxDistNonRequested/maxDistIndexNonRequested will store the index of the 613b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // farthest non-requested position 614b90a91c633e99d4559095184af27d1416541d3c0Winson Chung maxDistIndexNonRequested = i; 615b90a91c633e99d4559095184af27d1416541d3c0Winson Chung maxDistNonRequested = dist; 616b90a91c633e99d4559095184af27d1416541d3c0Winson Chung } 6173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (dist > maxDist) { 618b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // maxDist/maxDistIndex will store the index of the farthest position 619b90a91c633e99d4559095184af27d1416541d3c0Winson Chung // regardless of whether it was directly requested or not 6203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung maxDistIndex = i; 6213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung maxDist = dist; 622c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 623c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 624b90a91c633e99d4559095184af27d1416541d3c0Winson Chung if (maxDistIndexNonRequested > -1) { 625b90a91c633e99d4559095184af27d1416541d3c0Winson Chung return maxDistIndexNonRequested; 626b90a91c633e99d4559095184af27d1416541d3c0Winson Chung } 6273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return maxDistIndex; 628c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 629c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 6303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void queueRequestedPositionToLoad(int position) { 631b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mLastRequestedIndex = position; 6323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 6333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.add(position); 6343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.add(position); 635499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 636499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 63716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public boolean queuePositionsToBePreloadedFromRequestedPosition(int position) { 6383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Check if we need to preload any items 6393ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mPreloadLowerBound <= position && position <= mPreloadUpperBound) { 6403ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int center = (mPreloadUpperBound + mPreloadLowerBound) / 2; 6413ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (Math.abs(position - center) < mMaxCountSlack) { 64216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return false; 643499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 644499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 645499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 6463ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int count = 0; 6473ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mMetaData) { 6483ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung count = mMetaData.count; 649499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 6503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 6513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.clear(); 6523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6533ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add all the requested indices 6543ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.addAll(mRequestedIndices); 6553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 6563ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Add all the preload indices 6573ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int halfMaxCount = mMaxCount / 2; 6583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = position - halfMaxCount; 6593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = position + halfMaxCount; 6603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int effectiveLowerBound = Math.max(0, mPreloadLowerBound); 6613ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int effectiveUpperBound = Math.min(mPreloadUpperBound, count - 1); 6623ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung for (int i = effectiveLowerBound; i <= effectiveUpperBound; ++i) { 6633ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.add(i); 6643ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 665499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 6663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // But remove all the indices that have already been loaded and are cached 6673ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.removeAll(mIndexRemoteViews.keySet()); 668499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 66916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return true; 670499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 671b90a91c633e99d4559095184af27d1416541d3c0Winson Chung /** Returns the next index to load, and whether that index was directly requested or not */ 672b90a91c633e99d4559095184af27d1416541d3c0Winson Chung public int[] getNextIndexToLoad() { 6733ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // We try and prioritize items that have been requested directly, instead 6743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // of items that are loaded as a result of the caching mechanism 6753ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 6763ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Prioritize requested indices to be loaded first 6773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (!mRequestedIndices.isEmpty()) { 6783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Integer i = mRequestedIndices.iterator().next(); 6793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.remove(i); 6803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.remove(i); 681b90a91c633e99d4559095184af27d1416541d3c0Winson Chung return new int[]{i.intValue(), 1}; 6823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 683499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 6843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Otherwise, preload other indices as necessary 6853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (!mLoadIndices.isEmpty()) { 6863ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Integer i = mLoadIndices.iterator().next(); 6873ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.remove(i); 688b90a91c633e99d4559095184af27d1416541d3c0Winson Chung return new int[]{i.intValue(), 0}; 6893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 690499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 691b90a91c633e99d4559095184af27d1416541d3c0Winson Chung return new int[]{-1, 0}; 692c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung } 6933ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 694c6d6d4a4e73fcb63eaa13d66fcbf26d847799838Winson Chung 6953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public boolean containsRemoteViewAt(int position) { 6963ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexRemoteViews.containsKey(position); 6973ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 6983ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public boolean containsMetaDataAt(int position) { 6993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mIndexMetaData.containsKey(position); 7003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 701499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 7023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void reset() { 70361ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // Note: We do not try and reset the meta data, since that information is still used by 70461ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // collection views to validate it's own contents (and will be re-requested if the data 70561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung // is invalidated through the notifyDataSetChanged() flow). 70661ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 7073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadLowerBound = 0; 7083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mPreloadUpperBound = -1; 709b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mLastRequestedIndex = -1; 7103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexRemoteViews.clear(); 7113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mIndexMetaData.clear(); 7123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mLoadIndices) { 7133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedIndices.clear(); 7143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mLoadIndices.clear(); 715499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 716499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 717499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 718499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 719499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public RemoteViewsAdapter(Context context, Intent intent, RemoteAdapterConnectionCallback callback) { 720499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mContext = context; 721499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mIntent = intent; 72281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung mAppWidgetId = intent.getIntExtra(RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID, -1); 723a5f6f802c6e472503efd5b598dc3bab57150c1c9Winson Chung mLayoutInflater = LayoutInflater.from(context); 7249b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung if (mIntent == null) { 7259b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung throw new IllegalArgumentException("Non-null Intent must be specified."); 7269b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 7273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRequestedViews = new RemoteViewsFrameLayoutRefSet(); 728499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 72981f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Strip the previously injected app widget id from service intent 73081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung if (intent.hasExtra(RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID)) { 73181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung intent.removeExtra(RemoteViews.EXTRA_REMOTEADAPTER_APPWIDGET_ID); 73281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung } 73381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung 73481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Initialize the worker thread 735499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerThread = new HandlerThread("RemoteViewsCache-loader"); 736499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerThread.start(); 737499cb9f516062b654952d282f211bee44c31a3c2Winson Chung mWorkerQueue = new Handler(mWorkerThread.getLooper()); 73881f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung mMainQueue = new Handler(Looper.myLooper(), this); 739499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 74081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Initialize the cache and the service connection on startup 74181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung mCache = new FixedSizeRemoteViewsCache(sDefaultCacheSize); 7423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mCallback = new WeakReference<RemoteAdapterConnectionCallback>(callback); 7433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mServiceConnection = new RemoteViewsAdapterServiceConnection(this); 744499cb9f516062b654952d282f211bee44c31a3c2Winson Chung requestBindService(); 745499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 746499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 747fc442bdea14289656ef1f537103578eb71faf473Jeff Brown @Override 748fc442bdea14289656ef1f537103578eb71faf473Jeff Brown protected void finalize() throws Throwable { 749fc442bdea14289656ef1f537103578eb71faf473Jeff Brown try { 750fc442bdea14289656ef1f537103578eb71faf473Jeff Brown if (mWorkerThread != null) { 751fc442bdea14289656ef1f537103578eb71faf473Jeff Brown mWorkerThread.quit(); 752fc442bdea14289656ef1f537103578eb71faf473Jeff Brown } 753fc442bdea14289656ef1f537103578eb71faf473Jeff Brown } finally { 754fc442bdea14289656ef1f537103578eb71faf473Jeff Brown super.finalize(); 755fc442bdea14289656ef1f537103578eb71faf473Jeff Brown } 756fc442bdea14289656ef1f537103578eb71faf473Jeff Brown } 757fc442bdea14289656ef1f537103578eb71faf473Jeff Brown 7583ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private void loadNextIndexInBackground() { 7593ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mWorkerQueue.post(new Runnable() { 7603ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung @Override 7613ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung public void run() { 76216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (mServiceConnection.isConnected()) { 76316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Get the next index to load 76416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung int position = -1; 765b90a91c633e99d4559095184af27d1416541d3c0Winson Chung boolean isRequested = false; 76616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mCache) { 767b90a91c633e99d4559095184af27d1416541d3c0Winson Chung int[] res = mCache.getNextIndexToLoad(); 768b90a91c633e99d4559095184af27d1416541d3c0Winson Chung position = res[0]; 769b90a91c633e99d4559095184af27d1416541d3c0Winson Chung isRequested = res[1] > 0; 77016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 77116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (position > -1) { 77216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Load the item, and notify any existing RemoteViewsFrameLayouts 773b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen updateRemoteViews(position, isRequested, true); 7743ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 77516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Queue up for the next one to load 77616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung loadNextIndexInBackground(); 77716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } else { 77816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // No more items to load, so queue unbind 77916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung enqueueDeferredUnbindServiceMessage(); 78016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 7813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7833ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 7843ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 7853ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 78616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private void processException(String method, Exception e) { 78716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e("RemoteViewsAdapter", "Error in " + method + ": " + e.getMessage()); 7883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 78916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // If we encounter a crash when updating, we should reset the metadata & cache and trigger 79016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // a notifyDataSetChanged to update the widget accordingly 79116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 79216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (metaData) { 79316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung metaData.reset(); 79416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 79516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mCache) { 79616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mCache.reset(); 79716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 79816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mMainQueue.post(new Runnable() { 79916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung @Override 80016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void run() { 80116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung superNotifyDataSetChanged(); 8023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 80316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung }); 80416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 80516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 80616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private void updateTemporaryMetaData() { 80716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 80816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 80916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung try { 81016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // get the properties/first view (so that we can use it to 81116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // measure our dummy views) 81216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung boolean hasStableIds = factory.hasStableIds(); 81316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung int viewTypeCount = factory.getViewTypeCount(); 81416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung int count = factory.getCount(); 81516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung RemoteViews loadingView = factory.getLoadingView(); 81616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung RemoteViews firstView = null; 81716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if ((count > 0) && (loadingView == null)) { 81816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung firstView = factory.getViewAt(0); 81916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 82016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final RemoteViewsMetaData tmpMetaData = mCache.getTemporaryMetaData(); 82116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (tmpMetaData) { 82216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung tmpMetaData.hasStableIds = hasStableIds; 82316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // We +1 because the base view type is the loading view 82416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung tmpMetaData.viewTypeCount = viewTypeCount + 1; 82516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung tmpMetaData.count = count; 82616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung tmpMetaData.setLoadingViewTemplates(loadingView, firstView); 82716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 8282625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch(RemoteException e) { 82916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung processException("updateMetaData", e); 830fa2e3ff3d33b2cbb452d22439e98b59e07f70f3dAdam Cohen } catch(RuntimeException e) { 831fa2e3ff3d33b2cbb452d22439e98b59e07f70f3dAdam Cohen processException("updateMetaData", e); 8323ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8333ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8343ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 835b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen private void updateRemoteViews(final int position, boolean isRequested, boolean 836b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen notifyWhenLoaded) { 83716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 83816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 83916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Load the item information from the remote service 84016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung RemoteViews remoteViews = null; 84116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung long itemId = 0; 84216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung try { 84316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung remoteViews = factory.getViewAt(position); 84416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung itemId = factory.getItemId(position); 8452625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RemoteException e) { 84616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e(TAG, "Error in updateRemoteViews(" + position + "): " + e.getMessage()); 84716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 84816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Return early to prevent additional work in re-centering the view cache, and 84916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // swapping from the loading view 85016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return; 8512625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RuntimeException e) { 8522625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen Log.e(TAG, "Error in updateRemoteViews(" + position + "): " + e.getMessage()); 8532625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen return; 85416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 8553ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 85616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (remoteViews == null) { 85716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // If a null view was returned, we break early to prevent it from getting 85816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // into our cache and causing problems later. The effect is that the child at this 85916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // position will remain as a loading view until it is updated. 86016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e(TAG, "Error in updateRemoteViews(" + position + "): " + " null RemoteViews " + 86116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung "returned from RemoteViewsFactory."); 86216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return; 86316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 86416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mCache) { 86516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Cache the RemoteViews we loaded 866b90a91c633e99d4559095184af27d1416541d3c0Winson Chung mCache.insert(position, remoteViews, itemId, isRequested); 86716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 86816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Notify all the views that we have previously returned for this index that 86916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // there is new data for it. 87016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final RemoteViews rv = remoteViews; 87116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final int typeId = mCache.getMetaDataAt(position).typeId; 872b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen if (notifyWhenLoaded) { 873b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen mMainQueue.post(new Runnable() { 874b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen @Override 875b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen public void run() { 876b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen mRequestedViews.notifyOnRemoteViewsLoaded(position, rv, typeId); 877b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen } 878b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen }); 879b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen } 8803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 881499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 882499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 8839b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung public Intent getRemoteViewsServiceIntent() { 8849b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung return mIntent; 8859b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 8869b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung 887499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getCount() { 8883ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 8893ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 8903ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.count; 8913ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 892499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 893499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 894499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public Object getItem(int position) { 8953ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Disallow arbitrary object to be associated with an item for the time being 896499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return null; 897499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 898499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 899499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public long getItemId(int position) { 9003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 9013ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mCache.containsMetaDataAt(position)) { 9023ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return mCache.getMetaDataAt(position).itemId; 9033ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9043ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return 0; 9053ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 906499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 907499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 908499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getItemViewType(int position) { 9093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId = 0; 9103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (mCache) { 9113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mCache.containsMetaDataAt(position)) { 9123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung typeId = mCache.getMetaDataAt(position).typeId; 9133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } else { 9143ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return 0; 9153ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9163ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9173ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 9183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 9193ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 9203ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.getMappedViewType(typeId); 9213ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9223ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9233ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 9243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung /** 9253ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * Returns the item type id for the specified convert view. Returns -1 if the convert view 9263ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung * is invalid. 9273ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung */ 9283ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung private int getConvertViewTypeId(View convertView) { 9293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int typeId = -1; 930a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (convertView != null) { 931a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen Object tag = convertView.getTag(com.android.internal.R.id.rowTypeId); 932a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen if (tag != null) { 933a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen typeId = (Integer) tag; 934a32edd4b4c894f4fb3d9fd7e9d5b80321df79e20Adam Cohen } 9353ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9363ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return typeId; 937499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 938499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 939b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen /** 940b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen * This method allows an AdapterView using this Adapter to provide information about which 941b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen * views are currently being displayed. This allows for certain optimizations and preloading 942b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen * which wouldn't otherwise be possible. 943b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen */ 944b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen public void setVisibleRangeHint(int lowerBound, int upperBound) { 9454c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen if (lowerBound < 0 || upperBound < 0) { 9464c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen throw new RuntimeException("Attempted to set invalid range: lowerBound="+lowerBound + 9474c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen "," + "upperBound="+upperBound); 9484c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen } 949b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen mVisibleWindowLowerBound = lowerBound; 950b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen mVisibleWindowUpperBound = upperBound; 951b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen } 952b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen 953499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public View getView(int position, View convertView, ViewGroup parent) { 95416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // "Request" an index so that we can queue it for loading, initiate subsequent 95516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // preloading, etc. 95616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mCache) { 95716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung boolean isInCache = mCache.containsRemoteViewAt(position); 95816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung boolean isConnected = mServiceConnection.isConnected(); 95916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung boolean hasNewItems = false; 96016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 9617ab73e757ac6b66b0066c8ff41c2d589adacd248Winson Chung if (!isInCache && !isConnected) { 96216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Requesting bind service will trigger a super.notifyDataSetChanged(), which will 96316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // in turn trigger another request to getView() 96416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung requestBindService(); 96516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } else { 9663ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Queue up other indices to be preloaded based on this position 96716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung hasNewItems = mCache.queuePositionsToBePreloadedFromRequestedPosition(position); 96816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 96916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 97016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (isInCache) { 9713ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung View convertViewChild = null; 9723ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung int convertViewTypeId = 0; 973181d2e3172f24d8c920cbe4b446e8f938ccdc8bbAdam Cohen RemoteViewsFrameLayout layout = null; 974181d2e3172f24d8c920cbe4b446e8f938ccdc8bbAdam Cohen 975181d2e3172f24d8c920cbe4b446e8f938ccdc8bbAdam Cohen if (convertView instanceof RemoteViewsFrameLayout) { 976181d2e3172f24d8c920cbe4b446e8f938ccdc8bbAdam Cohen layout = (RemoteViewsFrameLayout) convertView; 9773ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung convertViewChild = layout.getChildAt(0); 9783ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung convertViewTypeId = getConvertViewTypeId(convertViewChild); 9793ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 9803ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 9813ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // Second, we try and retrieve the RemoteViews from the cache, returning a loading 9823ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung // view and queueing it to be loaded if it has not already been loaded. 98316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Context context = parent.getContext(); 98416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung RemoteViews rv = mCache.getRemoteViewsAt(position); 985aeb66ca473a194d0b9148234a710b26ce88c4807Adam Cohen RemoteViewsIndexMetaData indexMetaData = mCache.getMetaDataAt(position); 986aeb66ca473a194d0b9148234a710b26ce88c4807Adam Cohen indexMetaData.isRequested = true; 987aeb66ca473a194d0b9148234a710b26ce88c4807Adam Cohen int typeId = indexMetaData.typeId; 98816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 989b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen try { 990b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // Reuse the convert view where possible 991b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen if (layout != null) { 992b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen if (convertViewTypeId == typeId) { 993b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen rv.reapply(context, convertViewChild); 994b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen return layout; 995b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 996b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen layout.removeAllViews(); 997b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } else { 998b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen layout = new RemoteViewsFrameLayout(context); 9993ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 10003ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1001b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // Otherwise, create a new view to be returned 1002b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen View newView = rv.apply(context, parent); 1003b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen newView.setTagInternal(com.android.internal.R.id.rowTypeId, 1004b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen new Integer(typeId)); 1005b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen layout.addView(newView); 1006b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen return layout; 1007b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen 1008b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } catch (Exception e){ 1009b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // We have to make sure that we successfully inflated the RemoteViews, if not 1010b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen // we return the loading view instead. 1011b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen Log.w(TAG, "Error inflating RemoteViews at position: " + position + ", using" + 1012b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen "loading view instead" + e); 1013b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen 1014b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen RemoteViewsFrameLayout loadingView = null; 1015b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen final RemoteViewsMetaData metaData = mCache.getMetaData(); 1016b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen synchronized (metaData) { 1017b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen loadingView = metaData.createLoadingView(position, convertView, parent); 1018b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 1019b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen return loadingView; 1020b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } finally { 1021b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen if (hasNewItems) loadNextIndexInBackground(); 1022b7ffea697292e48c9d764c5677b69af484e045c8Adam Cohen } 102316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } else { 102416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // If the cache does not have the RemoteViews at this position, then create a 102516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // loading view and queue the actual position to be loaded in the background 102616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung RemoteViewsFrameLayout loadingView = null; 102716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 102816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (metaData) { 102916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung loadingView = metaData.createLoadingView(position, convertView, parent); 10303ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 103116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 103216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mRequestedViews.add(position, loadingView); 103316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mCache.queueRequestedPositionToLoad(position); 103416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung loadNextIndexInBackground(); 103516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 103616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return loadingView; 10373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 10383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1039499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1040499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1041499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public int getViewTypeCount() { 10423ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 10433ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 10443ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.viewTypeCount; 10453ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1046499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1047499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1048499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public boolean hasStableIds() { 10493ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung final RemoteViewsMetaData metaData = mCache.getMetaData(); 10503ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung synchronized (metaData) { 10513ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return metaData.hasStableIds; 10523ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 1053499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1054499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 1055499cb9f516062b654952d282f211bee44c31a3c2Winson Chung public boolean isEmpty() { 1056499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return getCount() <= 0; 1057499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1058499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 105916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung private void onNotifyDataSetChanged() { 106016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Complete the actual notifyDataSetChanged() call initiated earlier 106116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung IRemoteViewsFactory factory = mServiceConnection.getRemoteViewsFactory(); 106216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung try { 106316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung factory.onDataSetChanged(); 10642625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RemoteException e) { 106516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung Log.e(TAG, "Error in updateNotifyDataSetChanged(): " + e.getMessage()); 106616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 106716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Return early to prevent from further being notified (since nothing has 106816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // changed) 106916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return; 10702625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen } catch (RuntimeException e) { 10712625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen Log.e(TAG, "Error in updateNotifyDataSetChanged(): " + e.getMessage()); 10722625feae79ab418355c2a4dafe8b162bba3cc1cfAdam Cohen return; 107316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 107416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 107516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Flush the cache so that we can reload new items from the service 107616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung synchronized (mCache) { 107716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mCache.reset(); 107816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 107916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 108016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Re-request the new metadata (only after the notification to the factory) 108116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung updateTemporaryMetaData(); 10824c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen int newCount; 10834c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen synchronized(mCache.getTemporaryMetaData()) { 10844c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen newCount = mCache.getTemporaryMetaData().count; 10854c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen } 108616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 1087b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen // Pre-load (our best guess of) the views which are currently visible in the AdapterView. 1088b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen // This mitigates flashing and flickering of loading views when a widget notifies that 1089b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen // its data has changed. 1090b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen for (int i = mVisibleWindowLowerBound; i <= mVisibleWindowUpperBound; i++) { 10914c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen // Because temporary meta data is only ever modified from this thread (ie. 10924c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen // mWorkerThread), it is safe to assume that count is a valid representation. 10934c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen if (i < newCount) { 10944c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen updateRemoteViews(i, false, false); 10954c994986202b5b668a6377a9ad47aa5345046db9Adam Cohen } 1096b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen } 1097b967392e0170af8cfd8053fd43fcdf8c46f703e9Adam Cohen 109816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Propagate the notification back to the base adapter 109916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mMainQueue.post(new Runnable() { 11006364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung @Override 11016364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung public void run() { 11026364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung synchronized (mCache) { 110316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mCache.commitTemporaryMetaData(); 11046364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung } 110561ac7e3b3602d9d20b8876b4bf8d2e536af04a47Winson Chung 110616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung superNotifyDataSetChanged(); 110716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung enqueueDeferredUnbindServiceMessage(); 11083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 11093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung }); 11106364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung 111116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Reset the notify flagflag 111216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mNotifyDataSetChangedAfterOnServiceConnected = false; 111316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 111416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 111516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void notifyDataSetChanged() { 111616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Dequeue any unbind messages 111716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mMainQueue.removeMessages(sUnbindServiceMessageType); 111816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 111916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // If we are not connected, queue up the notifyDataSetChanged to be handled when we do 112016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // connect 112116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (!mServiceConnection.isConnected()) { 112216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung if (mNotifyDataSetChangedAfterOnServiceConnected) { 112316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return; 112416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 112516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 112616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mNotifyDataSetChangedAfterOnServiceConnected = true; 112716c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung requestBindService(); 112816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung return; 112916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 113016c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung 113116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mWorkerQueue.post(new Runnable() { 113216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung @Override 113316c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung public void run() { 113416c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung onNotifyDataSetChanged(); 113516c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung } 113616c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung }); 11373ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 11383ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung 1139fb60386b46d0c6216c765c10bd33ac42ca780917Adam Cohen void superNotifyDataSetChanged() { 1140499cb9f516062b654952d282f211bee44c31a3c2Winson Chung super.notifyDataSetChanged(); 1141499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1142499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 114381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung @Override 114481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung public boolean handleMessage(Message msg) { 114581f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung boolean result = false; 114681f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung switch (msg.what) { 114781f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung case sUnbindServiceMessageType: 114881f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung if (mServiceConnection.isConnected()) { 114916c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mServiceConnection.unbind(mContext, mAppWidgetId, mIntent); 115081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung } 115181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung result = true; 115281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung break; 115381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung default: 115481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung break; 115581f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung } 115681f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung return result; 115781f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung } 115881f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung 115981f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung private void enqueueDeferredUnbindServiceMessage() { 116081f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Remove any existing deferred-unbind messages 116181f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung mMainQueue.removeMessages(sUnbindServiceMessageType); 116281f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung mMainQueue.sendEmptyMessageDelayed(sUnbindServiceMessageType, sUnbindServiceDelay); 116381f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung } 116481f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung 1165499cb9f516062b654952d282f211bee44c31a3c2Winson Chung private boolean requestBindService() { 116681f39eb6e76d0be1dd341af835e8002a0f80524eWinson Chung // Try binding the service (which will start it if it's not already running) 1167499cb9f516062b654952d282f211bee44c31a3c2Winson Chung if (!mServiceConnection.isConnected()) { 116816c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mServiceConnection.bind(mContext, mAppWidgetId, mIntent); 1169499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1170499cb9f516062b654952d282f211bee44c31a3c2Winson Chung 117116c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung // Remove any existing deferred-unbind messages 117216c8d8a558f94ec14ef52bb5ac11044e2d0d902cWinson Chung mMainQueue.removeMessages(sUnbindServiceMessageType); 1173499cb9f516062b654952d282f211bee44c31a3c2Winson Chung return mServiceConnection.isConnected(); 1174499cb9f516062b654952d282f211bee44c31a3c2Winson Chung } 1175499cb9f516062b654952d282f211bee44c31a3c2Winson Chung} 1176