Initial implementation of new voice interaction API.

This gives a basic working implementation of a persist
running service that can start a voice interaction when
it wants, with the target activity(s) able to go through
the protocol to interact with it.  It may even work when
the screen is off by putting the activity manager in the
correct state to act like the screen is on.

Includes a sample app that is a voice interation service
and also has an activity it can launch.

Now that I have this initial implementation, I think I
want to rework some aspects of the API.

Change-Id: I7646d0af8fb4ac768c63a18fe3de43f8091f60e9

1 files changed, 24 insertions, 2 deletions

diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 599a608..197eaf8 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -22,6 +22,7 @@ import android.transition.TransitionManager;
 import android.util.ArrayMap;
 import android.util.SuperNotCalledException;
 import android.widget.Toolbar;
+import com.android.internal.app.IVoiceInteractor;
 import com.android.internal.app.WindowDecorActionBar;
 import com.android.internal.app.ToolbarActionBar;
 import com.android.internal.policy.PolicyManager;
@@ -726,6 +727,8 @@ public class Activity extends ContextThemeWrapper
     /*package*/ ActionBar mActionBar = null;
     private boolean mEnableDefaultActionBarUp;
 
+    private VoiceInteractor mVoiceInteractor;
+
     private CharSequence mTitle;
     private int mTitleColor = 0;
 
@@ -1134,6 +1137,23 @@ public class Activity extends ContextThemeWrapper
     }
 
     /**
+     * Check whether this activity is running as part of a voice interaction with the user.
+     * If true, it should perform its interaction with the user through the
+     * {@link VoiceInteractor} returned by {@link #getVoiceInteractor}.
+     */
+    public boolean isVoiceInteraction() {
+        return mVoiceInteractor != null;
+    }
+
+    /**
+     * Retrieve the active {@link VoiceInteractor} that the user is going through to
+     * interact with this activity.
+     */
+    public VoiceInteractor getVoiceInteractor() {
+        return mVoiceInteractor;
+    }
+
+    /**
      * This is called for activities that set launchMode to "singleTop" in
      * their package, or if a client used the {@link Intent#FLAG_ACTIVITY_SINGLE_TOP}
      * flag when calling {@link #startActivity}.  In either case, when the
@@ -5397,7 +5417,7 @@ public class Activity extends ContextThemeWrapper
             NonConfigurationInstances lastNonConfigurationInstances,
             Configuration config) {
         attach(context, aThread, instr, token, ident, application, intent, info, title, parent, id,
-                lastNonConfigurationInstances, config, null);
+                lastNonConfigurationInstances, config, null, null);
     }
 
     final void attach(Context context, ActivityThread aThread,
@@ -5405,7 +5425,7 @@ public class Activity extends ContextThemeWrapper
             Application application, Intent intent, ActivityInfo info,
             CharSequence title, Activity parent, String id,
             NonConfigurationInstances lastNonConfigurationInstances,
-            Configuration config, Bundle options) {
+            Configuration config, Bundle options, IVoiceInteractor voiceInteractor) {
         attachBaseContext(context);
 
         mFragments.attachActivity(this, mContainer, null);
@@ -5433,6 +5453,8 @@ public class Activity extends ContextThemeWrapper
         mParent = parent;
         mEmbeddedID = id;
         mLastNonConfigurationInstances = lastNonConfigurationInstances;
+        mVoiceInteractor = voiceInteractor != null
+                ? new VoiceInteractor(this, voiceInteractor, Looper.myLooper()) : null;
 
         mWindow.setWindowManager(
                 (WindowManager)context.getSystemService(Context.WINDOW_SERVICE),