| /* |
| * Copyright (C) 2017 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 android.app; |
| |
| import android.annotation.UnsupportedAppUsage; |
| |
| /** |
| * Listens to VR Mode state changes. Use with methods in {@link VrManager}. |
| * |
| * @hide |
| */ |
| public abstract class VrStateCallback { |
| |
| /** |
| * Callback triggered when there is a change to Persistent VR State. |
| * |
| * @param enabled True when VR State is in persistent mode, false otherwise. |
| */ |
| @UnsupportedAppUsage |
| public void onPersistentVrStateChanged(boolean enabled) {} |
| |
| /** |
| * Callback triggered when there is a change to Vr State. |
| * |
| * @param enabled True when VR State is in VR mode, false otherwise. |
| */ |
| public void onVrStateChanged(boolean enabled) {} |
| } |