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/DataUsageSummary.java

@@ -62,6 +62,7 @@ import android.content.Intent;
 import android.content.Loader;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.UserInfo;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
@@ -120,6 +121,7 @@ import android.widget.ProgressBar;
 import android.widget.Spinner;
 import android.widget.Switch;
 import android.widget.TabHost;
+import android.widget.Toast;
 import android.widget.TabHost.OnTabChangeListener;
 import android.widget.TabHost.TabContentFactory;
 import android.widget.TabHost.TabSpec;
@@ -142,7 +144,6 @@ import com.android.settings.sim.SimSettings;
 import com.android.settings.widget.ChartDataUsageView;
 import com.android.settings.widget.ChartDataUsageView.DataUsageChartListener;
 import com.android.settings.widget.ChartNetworkSeriesView;
-
 import com.google.android.collect.Lists;
 
 import libcore.util.Objects;
@@ -191,6 +192,8 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             "data_usage_disable_mobile_limit";
     private static final String DATA_USAGE_CYCLE_KEY = "data_usage_cycle";
 
+    public static final String EXTRA_SHOW_APP_IMMEDIATE_PKG = "showAppImmediatePkg";
+
     private static final int LOADER_CHART_DATA = 2;
     private static final int LOADER_SUMMARY = 3;
 
@@ -281,6 +284,9 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
 
     private UidDetailProvider mUidDetailProvider;
 
+    // Indicates request to show app immediately rather than list.
+    private String mShowAppImmediatePkg;
+
     /**
      * Local cache of data enabled for subId, used to work around delays.
      */
@@ -332,6 +338,13 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             mShowEthernet = true;
         }
 
+        mUidDetailProvider = new UidDetailProvider(context);
+
+        Bundle arguments = getArguments();
+        if (arguments != null) {
+            mShowAppImmediatePkg = arguments.getString(EXTRA_SHOW_APP_IMMEDIATE_PKG);
+        }
+
         setHasOptionsMenu(true);
     }
 
@@ -342,7 +355,6 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         final Context context = inflater.getContext();
         final View view = inflater.inflate(R.layout.data_usage_summary, container, false);
 
-        mUidDetailProvider = new UidDetailProvider(context);
 
         mTabHost = (TabHost) view.findViewById(android.R.id.tabhost);
         mTabsContainer = (ViewGroup) view.findViewById(R.id.tabs_container);
@@ -448,9 +460,34 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         mListView.setOnItemClickListener(mListListener);
         mListView.setAdapter(mAdapter);
 
+        showRequestedAppIfNeeded();
+
         return view;
     }
 
+    private void showRequestedAppIfNeeded() {
+        if (mShowAppImmediatePkg == null) {
+            return;
+        }
+        try {
+            int uid = getActivity().getPackageManager().getPackageUid(mShowAppImmediatePkg,
+                UserHandle.myUserId());
+            AppItem app = new AppItem(uid);
+            app.addUid(uid);
+
+            final UidDetail detail = mUidDetailProvider.getUidDetail(app.key, true);
+            // When we are going straight to an app then we are coming from App Info and want
+            // a header at the top.
+            AppHeader.createAppHeader(getActivity(), detail.icon, detail.label, null);
+            AppDetailsFragment.show(DataUsageSummary.this, app, detail.label, false);
+        } catch (NameNotFoundException e) {
+            Log.w(TAG, "Could not find " + mShowAppImmediatePkg, e);
+            Toast.makeText(getActivity(), getString(R.string.unknown_app), Toast.LENGTH_LONG)
+                    .show();
+            getActivity().finish();
+        }
+    }
+
     @Override
     public void onViewStateRestored(Bundle savedInstanceState) {
         super.onViewStateRestored(savedInstanceState);
@@ -639,6 +676,10 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
      * only be assigned after initial layout is complete.
      */
     private void ensureLayoutTransitions() {
+        if (mShowAppImmediatePkg != null) {
+            // If we are skipping right to showing an app, we don't care about transitions.
+            return;
+        }
         // skip when already setup
         if (mChart.getLayoutTransition() != null) return;
 
@@ -1887,6 +1928,11 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
         private static final String EXTRA_APP = "app";
 
         public static void show(DataUsageSummary parent, AppItem app, CharSequence label) {
+            show(parent, app, label, true);
+        }
+
+        public static void show(DataUsageSummary parent, AppItem app, CharSequence label,
+                boolean addToBack) {
             if (!parent.isAdded()) return;
 
             final Bundle args = new Bundle();
@@ -1897,7 +1943,9 @@ public class DataUsageSummary extends HighlightingFragment implements Indexable
             fragment.setTargetFragment(parent, 0);
             final FragmentTransaction ft = parent.getFragmentManager().beginTransaction();
             ft.add(fragment, TAG_APP_DETAILS);
-            ft.addToBackStack(TAG_APP_DETAILS);
+            if (addToBack) {
+                ft.addToBackStack(TAG_APP_DETAILS);
+            }
             ft.setBreadCrumbTitle(
                     parent.getResources().getString(R.string.data_usage_app_summary_title));
             ft.commitAllowingStateLoss();