1 /* 2 * Copyright 2018 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 androidx.annotation; 17 18 import static java.lang.annotation.ElementType.CONSTRUCTOR; 19 import static java.lang.annotation.ElementType.FIELD; 20 import static java.lang.annotation.ElementType.METHOD; 21 import static java.lang.annotation.ElementType.TYPE; 22 import static java.lang.annotation.RetentionPolicy.CLASS; 23 24 import java.lang.annotation.Retention; 25 import java.lang.annotation.Target; 26 27 /** Stub only annotation. Do not use directly. */ 28 @Retention(CLASS) 29 @Target({TYPE, FIELD, METHOD, CONSTRUCTOR}) 30 public @interface RequiresFeature { 31 /** The name of the feature that is required. */ 32 String name(); 33 34 /** 35 * Defines the name of the method that should be called to check whether the feature is 36 * available, using the same signature format as javadoc. The feature checking method can have 37 * multiple parameters, but the feature name parameter must be of type String and must also be 38 * the first String-type parameter. 39 */ 40 String enforcement(); 41 } 42
