Data usage performance, bugfixes.

Optimize launch times by removing unneeded extra work, including
reloading data and tightening chart invalidation.  Fix invalidation
storm when sweeps overlap.  Move chart history into loader instead of
blocking main thread.

Disable "Split 4G" mode until telephony support is ready, and combine
any existing split policies.

Async loading of application details.  Remove alpha transitions to
speed up on some hardware.  Hide menus in detail mode.  Delay kicking
off force-poll.  Fix inset padding on large devices.

Bug: 5284321, 5273918, 5263056
Change-Id: I746d79c05e2a6ea97bbdbdc5d807e208328d1373

src/com/android/settings/net/ChartData.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.net;
+
+import android.net.NetworkStatsHistory;
+
+public class ChartData {
+    public NetworkStatsHistory network;
+
+    public NetworkStatsHistory detail;
+    public NetworkStatsHistory detailDefault;
+    public NetworkStatsHistory detailForeground;
+}

src/com/android/settings/net/ChartDataLoader.java

@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.net;
+
+import static android.net.NetworkStats.SET_DEFAULT;
+import static android.net.NetworkStats.SET_FOREGROUND;
+import static android.net.NetworkStats.TAG_NONE;
+import static android.net.NetworkStatsHistory.FIELD_RX_BYTES;
+import static android.net.NetworkStatsHistory.FIELD_TX_BYTES;
+
+import android.content.AsyncTaskLoader;
+import android.content.Context;
+import android.net.INetworkStatsService;
+import android.net.NetworkStatsHistory;
+import android.net.NetworkTemplate;
+import android.os.Bundle;
+import android.os.RemoteException;
+
+/**
+ * Loader for historical chart data for both network and UID details.
+ */
+public class ChartDataLoader extends AsyncTaskLoader<ChartData> {
+    private static final String KEY_TEMPLATE = "template";
+    private static final String KEY_UIDS = "uids";
+    private static final String KEY_FIELDS = "fields";
+
+    private final INetworkStatsService mStatsService;
+    private final Bundle mArgs;
+
+    public static Bundle buildArgs(NetworkTemplate template, int[] uids) {
+        return buildArgs(template, uids, FIELD_RX_BYTES | FIELD_TX_BYTES);
+    }
+
+    public static Bundle buildArgs(NetworkTemplate template, int[] uids, int fields) {
+        final Bundle args = new Bundle();
+        args.putParcelable(KEY_TEMPLATE, template);
+        args.putIntArray(KEY_UIDS, uids);
+        args.putInt(KEY_FIELDS, fields);
+        return args;
+    }
+
+    public ChartDataLoader(Context context, INetworkStatsService statsService, Bundle args) {
+        super(context);
+        mStatsService = statsService;
+        mArgs = args;
+    }
+
+    @Override
+    protected void onStartLoading() {
+        super.onStartLoading();
+        forceLoad();
+    }
+
+    @Override
+    public ChartData loadInBackground() {
+        final NetworkTemplate template = mArgs.getParcelable(KEY_TEMPLATE);
+        final int[] uids = mArgs.getIntArray(KEY_UIDS);
+        final int fields = mArgs.getInt(KEY_FIELDS);
+
+        try {
+            return loadInBackground(template, uids, fields);
+        } catch (RemoteException e) {
+            // since we can't do much without history, and we don't want to
+            // leave with half-baked UI, we bail hard.
+            throw new RuntimeException("problem reading network stats", e);
+        }
+    }
+
+    private ChartData loadInBackground(NetworkTemplate template, int[] uids, int fields)
+            throws RemoteException {
+        final ChartData data = new ChartData();
+        data.network = mStatsService.getHistoryForNetwork(template, fields);
+
+        if (uids != null) {
+            data.detailDefault = null;
+            data.detailForeground = null;
+
+            // load stats for current uid and template
+            for (int uid : uids) {
+                data.detailDefault = collectHistoryForUid(
+                        template, uid, SET_DEFAULT, data.detailDefault);
+                data.detailForeground = collectHistoryForUid(
+                        template, uid, SET_FOREGROUND, data.detailForeground);
+            }
+
+            data.detail = new NetworkStatsHistory(data.detailForeground.getBucketDuration());
+            data.detail.recordEntireHistory(data.detailDefault);
+            data.detail.recordEntireHistory(data.detailForeground);
+        }
+
+        return data;
+    }
+
+    @Override
+    protected void onStopLoading() {
+        super.onStopLoading();
+        cancelLoad();
+    }
+
+    @Override
+    protected void onReset() {
+        super.onReset();
+        cancelLoad();
+    }
+
+    /**
+     * Collect {@link NetworkStatsHistory} for the requested UID, combining with
+     * an existing {@link NetworkStatsHistory} if provided.
+     */
+    private NetworkStatsHistory collectHistoryForUid(
+            NetworkTemplate template, int uid, int set, NetworkStatsHistory existing)
+            throws RemoteException {
+        final NetworkStatsHistory history = mStatsService.getHistoryForUid(
+                template, uid, set, TAG_NONE, FIELD_RX_BYTES | FIELD_TX_BYTES);
+
+        if (existing != null) {
+            existing.recordEntireHistory(history);
+            return existing;
+        } else {
+            return history;
+        }
+    }
+}

src/com/android/settings/net/NetworkPolicyEditor.java

@@ -36,8 +36,10 @@ import android.text.format.Time;
 
 import com.android.internal.util.Objects;
 import com.google.android.collect.Lists;
+import com.google.android.collect.Sets;
 
 import java.util.ArrayList;
+import java.util.HashSet;
 
 /**
  * Utility class to modify list of {@link NetworkPolicy}. Specifically knows
@@ -46,6 +48,8 @@ import java.util.ArrayList;
 public class NetworkPolicyEditor {
     // TODO: be more robust when missing policies from service
 
+    public static final boolean ENABLE_SPLIT_POLICIES = false;
+
     private INetworkPolicyManager mPolicyService;
     private ArrayList<NetworkPolicy> mPolicies = Lists.newArrayList();
 
@@ -83,6 +87,11 @@ public class NetworkPolicyEditor {
             mPolicies.add(policy);
         }
 
+        // force combine any split policies when disabled
+        if (!ENABLE_SPLIT_POLICIES) {
+            modified |= forceMobilePolicyCombined();
+        }
+
         // when we cleaned policies above, write back changes
         if (modified) writeAsync();
     }
@@ -161,6 +170,22 @@ public class NetworkPolicyEditor {
         writeAsync();
     }
 
+    /**
+     * Remove any split {@link NetworkPolicy}.
+     */
+    private boolean forceMobilePolicyCombined() {
+        final HashSet<String> subscriberIds = Sets.newHashSet();
+        for (NetworkPolicy policy : mPolicies) {
+            subscriberIds.add(policy.template.getSubscriberId());
+        }
+
+        boolean modified = false;
+        for (String subscriberId : subscriberIds) {
+            modified |= setMobilePolicySplitInternal(subscriberId, false);
+        }
+        return modified;
+    }
+
     public boolean isMobilePolicySplit(String subscriberId) {
         boolean has3g = false;
         boolean has4g = false;
@@ -181,6 +206,18 @@ public class NetworkPolicyEditor {
     }
 
     public void setMobilePolicySplit(String subscriberId, boolean split) {
+        if (setMobilePolicySplitInternal(subscriberId, split)) {
+            writeAsync();
+        }
+    }
+
+    /**
+     * Mutate {@link NetworkPolicy} for given subscriber, combining or splitting
+     * the policy as requested.
+     *
+     * @return {@code true} when any {@link NetworkPolicy} was mutated.
+     */
+    private boolean setMobilePolicySplitInternal(String subscriberId, boolean split) {
         final boolean beforeSplit = isMobilePolicySplit(subscriberId);
 
         final NetworkTemplate template3g = buildTemplateMobile3gLower(subscriberId);
@@ -189,7 +226,7 @@ public class NetworkPolicyEditor {
 
         if (split == beforeSplit) {
             // already in requested state; skip
-            return;
+            return false;
 
         } else if (beforeSplit && !split) {
             // combine, picking most restrictive policy
@@ -203,7 +240,7 @@ public class NetworkPolicyEditor {
             mPolicies.add(
                     new NetworkPolicy(templateAll, restrictive.cycleDay, restrictive.warningBytes,
                             restrictive.limitBytes, SNOOZE_NEVER));
-            writeAsync();
+            return true;
 
         } else if (!beforeSplit && split) {
             // duplicate existing policy into two rules
@@ -215,8 +252,9 @@ public class NetworkPolicyEditor {
             mPolicies.add(
                     new NetworkPolicy(template4g, policyAll.cycleDay, policyAll.warningBytes,
                             policyAll.limitBytes, SNOOZE_NEVER));
-            writeAsync();
-
+            return true;
+        } else {
+            return false;
         }
     }
 }

src/com/android/settings/net/UidDetail.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.net;
+
+import android.graphics.drawable.Drawable;
+
+public class UidDetail {
+    public CharSequence label;
+    public CharSequence[] detailLabels;
+    public Drawable icon;
+}

src/com/android/settings/net/UidDetailProvider.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.net;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.Resources;
+import android.net.TrafficStats;
+import android.text.TextUtils;
+import android.util.SparseArray;
+
+import com.android.settings.R;
+
+public class UidDetailProvider {
+    private final Context mContext;
+    private final SparseArray<UidDetail> mUidDetailCache;
+
+    public UidDetailProvider(Context context) {
+        mContext = context.getApplicationContext();
+        mUidDetailCache = new SparseArray<UidDetail>();
+    }
+
+    public void clearCache() {
+        mUidDetailCache.clear();
+    }
+
+    /**
+     * Resolve best descriptive label for the given UID.
+     */
+    public UidDetail getUidDetail(int uid, boolean blocking) {
+        final UidDetail cached = mUidDetailCache.get(uid);
+        if (cached != null) {
+            return cached;
+        } else if (!blocking) {
+            return null;
+        }
+
+        final Resources res = mContext.getResources();
+        final PackageManager pm = mContext.getPackageManager();
+
+        final UidDetail detail = new UidDetail();
+        detail.label = pm.getNameForUid(uid);
+        detail.icon = pm.getDefaultActivityIcon();
+
+        // handle special case labels
+        switch (uid) {
+            case android.os.Process.SYSTEM_UID:
+                detail.label = res.getString(R.string.process_kernel_label);
+                detail.icon = pm.getDefaultActivityIcon();
+                mUidDetailCache.put(uid, detail);
+                return detail;
+            case TrafficStats.UID_REMOVED:
+                detail.label = res.getString(R.string.data_usage_uninstalled_apps);
+                detail.icon = pm.getDefaultActivityIcon();
+                mUidDetailCache.put(uid, detail);
+                return detail;
+        }
+
+        // otherwise fall back to using packagemanager labels
+        final String[] packageNames = pm.getPackagesForUid(uid);
+        final int length = packageNames != null ? packageNames.length : 0;
+
+        try {
+            if (length == 1) {
+                final ApplicationInfo info = pm.getApplicationInfo(packageNames[0], 0);
+                detail.label = info.loadLabel(pm).toString();
+                detail.icon = info.loadIcon(pm);
+            } else if (length > 1) {
+                detail.detailLabels = new CharSequence[length];
+                for (int i = 0; i < length; i++) {
+                    final String packageName = packageNames[i];
+                    final PackageInfo packageInfo = pm.getPackageInfo(packageName, 0);
+                    final ApplicationInfo appInfo = pm.getApplicationInfo(packageName, 0);
+
+                    detail.detailLabels[i] = appInfo.loadLabel(pm).toString();
+                    if (packageInfo.sharedUserLabel != 0) {
+                        detail.label = pm.getText(packageName, packageInfo.sharedUserLabel,
+                                packageInfo.applicationInfo).toString();
+                        detail.icon = appInfo.loadIcon(pm);
+                    }
+                }
+            }
+        } catch (NameNotFoundException e) {
+        }
+
+        if (TextUtils.isEmpty(detail.label)) {
+            detail.label = Integer.toString(uid);
+        }
+
+        mUidDetailCache.put(uid, detail);
+        return detail;
+    }
+}