Add data item to app info screen

Add link from app info to directly viewing data usage for that app.

Also do some minor tweaks to get ordering and summaries right on
the app info screen.

Bug: 19511439
Change-Id: Ic50dc24bf9a5c1fe6a7aa076772915ba61168fac

src/com/android/settings/applications/InstalledAppDetails.java

@@ -19,23 +19,33 @@ package com.android.settings.applications;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.AlertDialog;
+import android.app.LoaderManager.LoaderCallbacks;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.Loader;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
+import android.net.INetworkStatsService;
+import android.net.INetworkStatsSession;
+import android.net.NetworkTemplate;
+import android.net.TrafficStats;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.os.RemoteException;
+import android.os.ServiceManager;
 import android.os.UserHandle;
 import android.preference.Preference;
 import android.preference.Preference.OnPreferenceClickListener;
 import android.provider.Settings;
+import android.text.format.DateUtils;
+import android.text.format.Formatter;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -44,10 +54,14 @@ import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import com.android.settings.DataUsageSummary;
+import com.android.settings.DataUsageSummary.AppItem;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
 import com.android.settings.Utils;
 import com.android.settings.applications.ApplicationsState.AppEntry;
+import com.android.settings.net.ChartData;
+import com.android.settings.net.ChartDataLoader;
 import com.android.settings.notification.NotificationAppList;
 import com.android.settings.notification.NotificationAppList.AppRow;
 import com.android.settings.notification.NotificationAppList.Backend;
@@ -76,6 +90,8 @@ public class InstalledAppDetails extends AppInfoBase
     public static final int REQUEST_UNINSTALL = 0;
     private static final int SUB_INFO_FRAGMENT = 1;
 
+    private static final int LOADER_CHART_DATA = 2;
+
     private static final int DLG_FORCE_STOP = DLG_BASE + 1;
     private static final int DLG_DISABLE = DLG_BASE + 2;
     private static final int DLG_SPECIAL_DISABLE = DLG_BASE + 3;
@@ -109,6 +125,9 @@ public class InstalledAppDetails extends AppInfoBase
     // Used for updating notification preference.
     private final Backend mBackend = new Backend();
 
+    private ChartData mChartData;
+    private INetworkStatsSession mStatsSession;
+
     private boolean handleDisableable(Button button) {
         boolean disableable = false;
         // Try to prevent the user from bricking their phone
@@ -207,6 +226,37 @@ public class InstalledAppDetails extends AppInfoBase
 
         setHasOptionsMenu(true);
         addPreferencesFromResource(R.xml.installed_app_details);
+
+        INetworkStatsService statsService = INetworkStatsService.Stub.asInterface(
+                ServiceManager.getService(Context.NETWORK_STATS_SERVICE));
+        try {
+            mStatsSession = statsService.openSession();
+        } catch (RemoteException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        AppItem app = new AppItem(mAppEntry.info.uid);
+        app.addUid(mAppEntry.info.uid);
+        getLoaderManager().restartLoader(LOADER_CHART_DATA,
+                ChartDataLoader.buildArgs(NetworkTemplate.buildTemplateMobileWildcard(), app),
+                mDataCallbacks);
+    }
+
+    @Override
+    public void onPause() {
+        getLoaderManager().destroyLoader(LOADER_CHART_DATA);
+        super.onPause();
+    }
+
+    @Override
+    public void onDestroy() {
+        TrafficStats.closeQuietly(mStatsSession);
+
+        super.onDestroy();
     }
 
     public void onActivityCreated(Bundle savedInstanceState) {
@@ -223,8 +273,6 @@ public class InstalledAppDetails extends AppInfoBase
         mLaunchPreference.setOnPreferenceClickListener(this);
         mDataPreference = findPreference(KEY_DATA);
         mDataPreference.setOnPreferenceClickListener(this);
-        // Data isn't ready, lets just pull it for now.
-        getPreferenceScreen().removePreference(mDataPreference);
     }
 
     private void handleHeader() {
@@ -384,6 +432,7 @@ public class InstalledAppDetails extends AppInfoBase
                 mPm, context));
         mNotificationPreference.setSummary(getNotificationSummary(mAppEntry, context,
                 mBackend));
+        mDataPreference.setSummary(getDataSummary());
 
         if (!mInitialized) {
             // First time init: are we displaying an uninstalled app?
@@ -410,6 +459,18 @@ public class InstalledAppDetails extends AppInfoBase
         return true;
     }
 
+    private CharSequence getDataSummary() {
+        if (mChartData != null) {
+            long totalBytes = mChartData.detail.getTotalBytes();
+            Context context = getActivity();
+            return getString(R.string.data_summary_format,
+                    Formatter.formatFileSize(context, totalBytes),
+                    DateUtils.formatDateTime(context, mChartData.detail.getStart(),
+                            DateUtils.FORMAT_SHOW_DATE | DateUtils.FORMAT_ABBREV_MONTH));
+        }
+        return getString(R.string.computing_size);
+    }
+
     @Override
     protected AlertDialog createDialog(int id, int errorCode) {
         switch (id) {
@@ -579,7 +640,13 @@ public class InstalledAppDetails extends AppInfoBase
         } else if (preference == mLaunchPreference) {
             startAppInfoFragment(AppLaunchSettings.class, mLaunchPreference.getTitle());
         } else if (preference == mDataPreference) {
-            // Not yet.
+            Bundle args = new Bundle();
+            args.putString(DataUsageSummary.EXTRA_SHOW_APP_IMMEDIATE_PKG,
+                    mAppEntry.info.packageName);
+
+            SettingsActivity sa = (SettingsActivity) getActivity();
+            sa.startPreferencePanel(DataUsageSummary.class.getName(), args, -1,
+                    getString(R.string.app_data_usage), this, SUB_INFO_FRAGMENT);
         } else {
             return false;
         }
@@ -627,6 +694,26 @@ public class InstalledAppDetails extends AppInfoBase
         }
     }
 
+    private final LoaderCallbacks<ChartData> mDataCallbacks = new LoaderCallbacks<ChartData>() {
+
+        @Override
+        public Loader<ChartData> onCreateLoader(int id, Bundle args) {
+            return new ChartDataLoader(getActivity(), mStatsSession, args);
+        }
+
+        @Override
+        public void onLoadFinished(Loader<ChartData> loader, ChartData data) {
+            mChartData = data;
+            mDataPreference.setSummary(getDataSummary());
+        }
+
+        @Override
+        public void onLoaderReset(Loader<ChartData> loader) {
+            mChartData = null;
+            mDataPreference.setSummary(getDataSummary());
+        }
+    };
+
     private final BroadcastReceiver mCheckKillProcessesReceiver = new BroadcastReceiver() {
         @Override
         public void onReceive(Context context, Intent intent) {