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 android.support.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 /** 28 * Denotes that the annotated element should only be called on the given API level 29 * or higher. 30 * <p> 31 * This is similar in purpose to the older {@code @TargetApi} annotation, but more 32 * clearly expresses that this is a requirement on the caller, rather than being 33 * used to "suppress" warnings within the method that exceed the {@code minSdkVersion}. 34 */ 35 @Retention(CLASS) 36 @Target({TYPE,METHOD,CONSTRUCTOR,FIELD}) 37 public @interface RequiresApi { 38 /** 39 * The API level to require. Alias for {@link #api} which allows you to leave out the 40 * {@code api=} part. 41 */ 42 @IntRange(from=1) value()43 int value() default 1; 44 45 /** The API level to require */ 46 @IntRange(from=1) api()47 int api() default 1; 48 } 49