Add voice-only settings activities for airplane mode.

This activity can only be triggered through the Voice Interaction API - e.g. from calling VoiceInterationSession.startVoiceActivity()

Change-Id: I39ac409824693bc82e53d707a1ece2b23a89f3a3

src/com/android/settings/VoiceSettingsActivity.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+
+/**
+ * Activity for modifying a setting using the Voice Interaction API. This activity
+ * MUST only modify the setting if the intent was sent using
+ * {@link android.service.voice.VoiceInteractionSession#startVoiceActivity startVoiceActivity}.
+ */
+abstract public class VoiceSettingsActivity extends Activity {
+
+    private static final String TAG = "VoiceSettingsActivity";
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (isVoiceInteraction()) {
+            // Only permit if this is a voice interaction.
+            onVoiceSettingInteraction(getIntent());
+        } else {
+            Log.v(TAG, "Cannot modify settings without voice interaction");
+        }
+        finish();
+    }
+
+    /**
+     * Modify the setting as a voice interaction. The activity will finish
+     * after this method is called.
+     */
+    abstract protected void onVoiceSettingInteraction(Intent intent);
+}