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 package com.android.car.stream; 17 18 /** 19 * A base class for extensions to {@link StreamCard}. 20 * 21 * <p> 22 * {@link StreamCard} allows for additional fields to be included in the template through the 23 * use of extensions. Extensions should hold data specific for the type of {@link StreamCard} 24 * it is extending. 25 * 26 * Example: 27 * 28 * public class CurrentCallExtension extends StreamCardExtension { 29 * private long mCallStartTime; 30 * private String mDisplayName; 31 * 32 * public static final Creator<CurrentCallExtension> CREATOR 33 * = new BundleableCreator<>(CurrentCallExtension.class); 34 * 35 * @Override 36 * protected void writeToBundle(Bundle bundle) {...} 37 * 38 * @Override 39 * protected void readFromBundle(Bundle bundle) {...} 40 * 41 * } 42 * </p> 43 * 44 * 45 */ 46 public abstract class StreamCardExtension extends AbstractBundleable { 47 } 48