Initial implementation: Broadcasts on app launch.

Look for com.android.launcher3.action.LAUNCH to be sent when
an icon is clicked in Launcher. (Restricted to
com.android.launcher3.permission.RECEIVE_LAUNCH_BROADCASTS
which is a signature permission right now.

This is specifically tracking apps launched via shortcut
icon; any other method of launching apps (notifications,
recents, internal navigation, etc.) is outside of Launcher's
purview and hence not broadcast.

The broadcast currently includes, in the "intent" extra, the
Uri flattening of the specific shortcut clicked.

The file /data/data/<pkg>/files/launches.log contains a
binary log of all such launches, including additional info
like screen# that should probably be in the broadcast too.

This info is summarized in .../stats.log, which encodes a
simple histogram of app launches since basically forever.
This should probably be done over a sliding window, which
will require more processing on startup.

Bug: 10031590
Change-Id: Ifc5921d5dc20701c67678cbfdc89b03cacd62028

1 files changed, 8 insertions, 1 deletions

diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index fa9627973..c3ea1ef8a 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -345,6 +345,8 @@ public class Launcher extends Activity
         int cellY;
     }
 
+    private Stats mStats;
+
     private static boolean isPropertyEnabled(String propertyName) {
         return Log.isLoggable(propertyName, Log.VERBOSE);
     }
@@ -378,6 +380,8 @@ public class Launcher extends Activity
         mDragController = new DragController(this);
         mInflater = getLayoutInflater();
 
+        mStats = new Stats(this);
+
         mAppWidgetManager = AppWidgetManager.getInstance(this);
         mAppWidgetHost = new LauncherAppWidgetHost(this, APPWIDGET_HOST_ID);
         mAppWidgetHost.startListening();
@@ -2086,7 +2090,8 @@ public class Launcher extends Activity
         Object tag = v.getTag();
         if (tag instanceof ShortcutInfo) {
             // Open shortcut
-            final Intent intent = ((ShortcutInfo) tag).intent;
+            final ShortcutInfo shortcut = (ShortcutInfo) tag;
+            final Intent intent = shortcut.intent;
 
             // Check for special shortcuts
             if (intent.getComponent() != null) {
@@ -2112,6 +2117,8 @@ public class Launcher extends Activity
 
             boolean success = startActivitySafely(v, intent, tag);
 
+            mStats.recordLaunch(intent, shortcut);
+
             if (success && v instanceof BubbleTextView) {
                 mWaitingForResume = (BubbleTextView) v;
                 mWaitingForResume.setStayPressed(true);