1 /** 2 * Copyright (c) 2016, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.service.vr; 18 19 import android.service.vr.IVrStateCallbacks; 20 21 /** @hide */ 22 interface IVrManager { 23 24 /** 25 * Add a callback to be notified when VR mode state changes. 26 * 27 * @param cb the callback instance to add. 28 */ 29 void registerListener(in IVrStateCallbacks cb); 30 31 /** 32 * Remove the callack from the current set of registered callbacks. 33 * 34 * @param cb the callback to remove. 35 */ 36 void unregisterListener(in IVrStateCallbacks cb); 37 38 /** 39 * Return current VR mode state. 40 * 41 * @return {@code true} if VR mode is enabled. 42 */ 43 boolean getVrModeState(); 44 45 } 46 47
