The voice assist may now be launched above the lockscreen

A possibility was introduced to launch voice assist over
the lockscreen using the left keyguard affordance.

Change-Id: Ic4618d24256b65441a50d77d0ef59b0ec99b6ead

4 files changed, 42 insertions, 0 deletions

diff --git a/core/java/android/service/voice/IVoiceInteractionService.aidl b/core/java/android/service/voice/IVoiceInteractionService.aidl
index e8265a2..e3d68a6 100644
--- a/core/java/android/service/voice/IVoiceInteractionService.aidl
+++ b/core/java/android/service/voice/IVoiceInteractionService.aidl
@@ -23,4 +23,5 @@ oneway interface IVoiceInteractionService {
     void ready();
     void soundModelsChanged();
     void shutdown();
+    void launchVoiceAssistFromKeyguard();
 }
diff --git a/core/java/android/service/voice/VoiceInteractionService.java b/core/java/android/service/voice/VoiceInteractionService.java
index fee0c75..8c89ddb 100644
--- a/core/java/android/service/voice/VoiceInteractionService.java
+++ b/core/java/android/service/voice/VoiceInteractionService.java
@@ -98,6 +98,10 @@ public class VoiceInteractionService extends Service {
         @Override public void soundModelsChanged() {
             mHandler.sendEmptyMessage(MSG_SOUND_MODELS_CHANGED);
         }
+        @Override
+        public void launchVoiceAssistFromKeyguard() throws RemoteException {
+            mHandler.sendEmptyMessage(MSG_LAUNCH_VOICE_ASSIST_FROM_KEYGUARD);
+        }
     };
 
     MyHandler mHandler;
@@ -113,6 +117,7 @@ public class VoiceInteractionService extends Service {
     static final int MSG_READY = 1;
     static final int MSG_SHUTDOWN = 2;
     static final int MSG_SOUND_MODELS_CHANGED = 3;
+    static final int MSG_LAUNCH_VOICE_ASSIST_FROM_KEYGUARD = 4;
 
     class MyHandler extends Handler {
         @Override
@@ -127,6 +132,9 @@ public class VoiceInteractionService extends Service {
                 case MSG_SOUND_MODELS_CHANGED:
                     onSoundModelsChangedInternal();
                     break;
+                case MSG_LAUNCH_VOICE_ASSIST_FROM_KEYGUARD:
+                    onLaunchVoiceAssistFromKeyguard();
+                    break;
                 default:
                     super.handleMessage(msg);
             }
@@ -134,6 +142,19 @@ public class VoiceInteractionService extends Service {
     }
 
     /**
+     * Called when a user has activated an affordance to launch voice assist from the Keyguard.
+     *
+     * <p>This method will only be called if the VoiceInteractionService has set
+     * {@link android.R.attr#supportsLaunchVoiceAssistFromKeyguard} and the Keyguard is showing.</p>
+     *
+     * <p>A valid implementation must start a new activity that should use {@link
+     * android.view.WindowManager.LayoutParams#FLAG_SHOW_WHEN_LOCKED} to display
+     * on top of the lock screen.</p>
+     */
+    public void onLaunchVoiceAssistFromKeyguard() {
+    }
+
+    /**
      * Check whether the given service component is the currently active
      * VoiceInteractionService.
      */
diff --git a/core/java/android/service/voice/VoiceInteractionServiceInfo.java b/core/java/android/service/voice/VoiceInteractionServiceInfo.java
index 997d586..463eb5b 100644
--- a/core/java/android/service/voice/VoiceInteractionServiceInfo.java
+++ b/core/java/android/service/voice/VoiceInteractionServiceInfo.java
@@ -44,6 +44,7 @@ public class VoiceInteractionServiceInfo {
     private String mRecognitionService;
     private String mSettingsActivity;
     private boolean mSupportsAssist;
+    private boolean mSupportsLaunchFromKeyguard;
 
     public VoiceInteractionServiceInfo(PackageManager pm, ComponentName comp)
             throws PackageManager.NameNotFoundException {
@@ -98,6 +99,9 @@ public class VoiceInteractionServiceInfo {
             mSupportsAssist = array.getBoolean(
                     com.android.internal.R.styleable.VoiceInteractionService_supportsAssist,
                     false);
+            mSupportsLaunchFromKeyguard = array.getBoolean(com.android.internal.
+                    R.styleable.VoiceInteractionService_supportsLaunchVoiceAssistFromKeyguard,
+                    false);
             array.recycle();
             if (mSessionService == null) {
                 mParseError = "No sessionService specified";
@@ -148,4 +152,8 @@ public class VoiceInteractionServiceInfo {
     public boolean getSupportsAssist() {
         return mSupportsAssist;
     }
+
+    public boolean getSupportsLaunchFromKeyguard() {
+        return mSupportsLaunchFromKeyguard;
+    }
 }
diff --git a/core/java/com/android/internal/app/IVoiceInteractionManagerService.aidl b/core/java/com/android/internal/app/IVoiceInteractionManagerService.aidl
index 4c6db24..644adb6 100644
--- a/core/java/com/android/internal/app/IVoiceInteractionManagerService.aidl
+++ b/core/java/com/android/internal/app/IVoiceInteractionManagerService.aidl
@@ -97,6 +97,12 @@ interface IVoiceInteractionManagerService {
     void showSessionForActiveService(IVoiceInteractionSessionShowCallback showCallback);
 
     /**
+     * Notifies the active service that a launch was requested from the Keyguard. This will only
+     * be called if {@link #activeServiceSupportsLaunchFromKeyguard()} returns true.
+     */
+    void launchVoiceAssistFromKeyguard();
+
+    /**
      * Indicates whether there is a voice session running (but not necessarily showing).
      */
     boolean isSessionRunning();
@@ -106,4 +112,10 @@ interface IVoiceInteractionManagerService {
      * assist gesture.
      */
     boolean activeServiceSupportsAssist();
+
+    /**
+     * Indicates whether the currently active voice interaction service is capable of being launched
+     * from the lockscreen.
+     */
+    boolean activeServiceSupportsLaunchFromKeyguard();
 }