Work on settings launch speed

Move some stuff to the background, avoid doing other things.

Change-Id: I145172efa16f81c2f377f07744c8f88145e2ed1d

src/com/android/settings/SettingsActivity.java

@@ -32,6 +32,7 @@ import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
 import android.content.res.Configuration;
 import android.nfc.NfcAdapter;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.os.UserManager;
@@ -453,6 +454,7 @@ public class SettingsActivity extends SettingsDrawerActivity
     @Override
     protected void onCreate(Bundle savedState) {
         super.onCreate(savedState);
+        long startTime = System.currentTimeMillis();
 
         // Should happen before any call to getIntent()
         getMetaData();
@@ -506,7 +508,15 @@ public class SettingsActivity extends SettingsDrawerActivity
         if (mIsShowingDashboard) {
             // Run the Index update only if we have some space
             if (!Utils.isLowStorage(this)) {
+                long indexStartTime = System.currentTimeMillis();
+                AsyncTask.execute(new Runnable() {
+                    @Override
+                    public void run() {
                         Index.getInstance(getApplicationContext()).update();
+                    }
+                });
+                if (DEBUG_TIMING) Log.d(LOG_TAG, "Index.update() took "
+                        + (System.currentTimeMillis() - indexStartTime) + " ms");
             } else {
                 Log.w(LOG_TAG, "Cannot update the Indexer as we are running low on storage space!");
             }
@@ -621,6 +631,8 @@ public class SettingsActivity extends SettingsDrawerActivity
         }
 
         mHomeActivitiesCount = getHomeActivitiesCount();
+        if (DEBUG_TIMING) Log.d(LOG_TAG, "onCreate took " + (System.currentTimeMillis() - startTime)
+                + " ms");
     }
 
     private int getHomeActivitiesCount() {
@@ -955,6 +967,18 @@ public class SettingsActivity extends SettingsDrawerActivity
     }
 
     private void updateTilesList() {
+        // Generally the items that are will be changing from these updates will
+        // not be in the top list of tiles, so run it in the background and the
+        // SettingsDrawerActivity will pick up on the updates automatically.
+        AsyncTask.execute(new Runnable() {
+            @Override
+            public void run() {
+                doUpdateTilesList();
+            }
+        });
+    }
+
+    private void doUpdateTilesList() {
         PackageManager pm = getPackageManager();
         final UserManager um = UserManager.get(this);
         final boolean isAdmin = um.isAdminUser();
@@ -1009,7 +1033,7 @@ public class SettingsActivity extends SettingsDrawerActivity
 
         if (UserHandle.MU_ENABLED && !isAdmin) {
             // When on restricted users, disable all extra categories (but only the settings ones).
-            List<DashboardCategory> categories = getDashboardCategories(true);
+            List<DashboardCategory> categories = getDashboardCategories();
             for (DashboardCategory category : categories) {
                 for (DashboardTile tile : category.tiles) {
                     ComponentName component = tile.intent.getComponent();
@@ -1020,8 +1044,6 @@ public class SettingsActivity extends SettingsDrawerActivity
                 }
             }
         }
-
-        updateDrawer();
     }
 
     private void setTileEnabled(ComponentName component, boolean enabled, boolean isAdmin,

src/com/android/settings/dashboard/DashboardSummary.java

@@ -16,13 +16,7 @@
 
 package com.android.settings.dashboard;
 
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
 import android.os.Bundle;
-import android.os.Handler;
-import android.os.Message;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.util.Log;
@@ -38,11 +32,14 @@ import com.android.settings.R;
 import com.android.settings.Settings;
 import com.android.settings.SettingsActivity;
 import com.android.settingslib.drawer.DashboardCategory;
+import com.android.settingslib.drawer.SettingsDrawerActivity;
 
 import java.util.List;
 
-public class DashboardSummary extends InstrumentedFragment {
+public class DashboardSummary extends InstrumentedFragment
-    public static final boolean DEBUG = true;
+        implements SettingsDrawerActivity.CategoryListener {
+    public static final boolean DEBUG = false;
+    private static final boolean DEBUG_TIMING = false;
     private static final String TAG = "DashboardSummary";
 
     public static final String[] INITIAL_ITEMS = new String[] {
@@ -56,8 +53,6 @@ public class DashboardSummary extends InstrumentedFragment {
 
     private static final int MSG_REBUILD_UI = 1;
 
-    private final HomePackageReceiver mHomePackageReceiver = new HomePackageReceiver();
-
     private RecyclerView mDashboard;
     private DashboardAdapter mAdapter;
     private SummaryLoader mSummaryLoader;
@@ -71,11 +66,19 @@ public class DashboardSummary extends InstrumentedFragment {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        long startTime = System.currentTimeMillis();
         List<DashboardCategory> categories =
-                ((SettingsActivity) getActivity()).getDashboardCategories(true);
+                ((SettingsActivity) getActivity()).getDashboardCategories();
-        mAdapter = new DashboardAdapter(getContext(), categories);
+        mSummaryLoader = new SummaryLoader(getActivity(), categories);
-        mSummaryLoader = new SummaryLoader(getActivity(), mAdapter, categories);
         setHasOptionsMenu(true);
+        if (DEBUG_TIMING) Log.d(TAG, "onCreate took " + (System.currentTimeMillis() - startTime)
+                + " ms");
+    }
+
+    @Override
+    public void onDestroy() {
+        mSummaryLoader.release();
+        super.onDestroy();
     }
 
     @Override
@@ -90,14 +93,7 @@ public class DashboardSummary extends InstrumentedFragment {
     public void onResume() {
         super.onResume();
 
-        sendRebuildUI();
+        ((SettingsDrawerActivity) getActivity()).addCategoryListener(this);
-
-        final IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
-        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
-        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
-        filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
-        filter.addDataScheme("package");
-        getActivity().registerReceiver(mHomePackageReceiver, filter);
         mSummaryLoader.setListening(true);
     }
 
@@ -105,7 +101,7 @@ public class DashboardSummary extends InstrumentedFragment {
     public void onPause() {
         super.onPause();
 
-        getActivity().unregisterReceiver(mHomePackageReceiver);
+        ((SettingsDrawerActivity) getActivity()).remCategoryListener(this);
         mSummaryLoader.setListening(false);
     }
 
@@ -123,10 +119,10 @@ public class DashboardSummary extends InstrumentedFragment {
         mDashboard.setLayoutManager(llm);
         mDashboard.setHasFixedSize(true);
 
-        rebuildUI(getContext());
+        rebuildUI();
     }
 
-    private void rebuildUI(Context context) {
+    private void rebuildUI() {
         if (!isAdded()) {
             Log.w(TAG, "Cannot build the DashboardSummary UI yet as the Fragment is not added");
             return;
@@ -135,7 +131,7 @@ public class DashboardSummary extends InstrumentedFragment {
         long start = System.currentTimeMillis();
         // TODO: Cache summaries from old categories somehow.
         List<DashboardCategory> categories =
-                ((SettingsActivity) getActivity()).getDashboardCategories(true);
+                ((SettingsActivity) getActivity()).getDashboardCategories();
         boolean showingAll = mAdapter != null && mAdapter.isShowingAll();
         mAdapter = new DashboardAdapter(getContext(), categories);
         mSummaryLoader.setAdapter(mAdapter);
@@ -146,29 +142,8 @@ public class DashboardSummary extends InstrumentedFragment {
         Log.d(TAG, "rebuildUI took: " + delta + " ms");
     }
 
-    private void sendRebuildUI() {
-        if (!mHandler.hasMessages(MSG_REBUILD_UI)) {
-            mHandler.sendEmptyMessage(MSG_REBUILD_UI);
-        }
-    }
-
-    private Handler mHandler = new Handler() {
     @Override
-        public void handleMessage(Message msg) {
+    public void onCategoriesChanged() {
-            switch (msg.what) {
+        rebuildUI();
-                case MSG_REBUILD_UI: {
-                    final Context context = getActivity();
-                    rebuildUI(context);
-                } break;
     }
-        }
-    };
-
-    private class HomePackageReceiver extends BroadcastReceiver {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            rebuildUI(context);
-        }
-    }
-
 }

src/com/android/settings/dashboard/SummaryLoader.java

@@ -16,9 +16,11 @@
 package com.android.settings.dashboard;
 
 import android.app.Activity;
-import android.content.pm.ActivityInfo;
-import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.os.Looper;
+import android.os.Message;
 import android.util.ArrayMap;
 import android.util.Log;
 import com.android.settings.SettingsActivity;
@@ -39,38 +41,48 @@ public class SummaryLoader {
     private final ArrayMap<SummaryProvider, DashboardTile> mSummaryMap = new ArrayMap<>();
     private final List<DashboardTile> mTiles = new ArrayList<>();
 
+    private final Worker mWorker;
+    private final Handler mHandler;
+    private final HandlerThread mWorkerThread;
+
     private DashboardAdapter mAdapter;
 
-    public SummaryLoader(Activity activity, DashboardAdapter adapter,
+    public SummaryLoader(Activity activity, List<DashboardCategory> categories) {
-                  List<DashboardCategory> categories) {
+        mHandler = new Handler();
+        mWorkerThread = new HandlerThread("SummaryLoader");
+        mWorkerThread.start();
+        mWorker = new Worker(mWorkerThread.getLooper());
         mActivity = activity;
-        mAdapter = adapter;
         for (int i = 0; i < categories.size(); i++) {
             List<DashboardTile> tiles = categories.get(i).tiles;
             for (int j = 0; j < tiles.size(); j++) {
                 DashboardTile tile = tiles.get(j);
-                SummaryProvider provider = getSummaryProvider(tile);
+                mWorker.obtainMessage(Worker.MSG_GET_PROVIDER, tile).sendToTarget();
-                if (provider != null) {
-                    mSummaryMap.put(provider, tile);
             }
         }
     }
+
+    public void release() {
+        mWorkerThread.quit();
     }
 
     public void setAdapter(DashboardAdapter adapter) {
         mAdapter = adapter;
     }
 
-    public void setSummary(SummaryProvider provider, CharSequence summary) {
+    public void setSummary(SummaryProvider provider, final CharSequence summary) {
-        DashboardTile tile = mSummaryMap.get(provider);
+        final DashboardTile tile = mSummaryMap.get(provider);
+        mHandler.post(new Runnable() {
+            @Override
+            public void run() {
                 tile.summary = summary;
                 mAdapter.notifyChanged(tile);
             }
+        });
+    }
 
     public void setListening(boolean listening) {
-        for (SummaryProvider provider : mSummaryMap.keySet()) {
+        mWorker.obtainMessage(Worker.MSG_SET_LISTENING, listening ? 1 : 0, 0).sendToTarget();
-            provider.setListening(listening);
-        }
     }
 
     private SummaryProvider getSummaryProvider(DashboardTile tile) {
@@ -107,14 +119,7 @@ public class SummaryLoader {
     }
 
     private Bundle getMetaData(DashboardTile tile) {
-        // TODO: Cache this in TileUtils so this doesn't need to be loaded again.
+        return tile.metaData;
-        try {
-            ActivityInfo activityInfo = mActivity.getPackageManager().getActivityInfo(
-                    tile.intent.getComponent(), PackageManager.GET_META_DATA);
-            return activityInfo.metaData;
-        } catch (PackageManager.NameNotFoundException e) {
-            return null;
-        }
     }
 
     public interface SummaryProvider {
@@ -124,4 +129,34 @@ public class SummaryLoader {
     public interface SummaryProviderFactory {
         SummaryProvider createSummaryProvider(Activity activity, SummaryLoader summaryLoader);
     }
+
+    private class Worker extends Handler {
+        private static final int MSG_GET_PROVIDER = 1;
+        private static final int MSG_SET_LISTENING = 2;
+
+        public Worker(Looper looper) {
+            super(looper);
+        }
+
+        @Override
+        public void handleMessage(Message msg) {
+            switch (msg.what) {
+                case MSG_GET_PROVIDER:
+                    DashboardTile tile = (DashboardTile) msg.obj;
+                    SummaryProvider provider = getSummaryProvider(tile);
+                    if (provider != null) {
+                        if (DEBUG) Log.d(TAG, "Creating " + tile);
+                        mSummaryMap.put(provider, tile);
+                    }
+                    break;
+                case MSG_SET_LISTENING:
+                    boolean listening = msg.arg1 != 0;
+                    if (DEBUG) Log.d(TAG, "Listening " + listening);
+                    for (SummaryProvider p : mSummaryMap.keySet()) {
+                        p.setListening(listening);
+                    }
+                    break;
+            }
+        }
+    }
 }