52 lines
1.9 KiB
Java
52 lines
1.9 KiB
Java
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.annotation;
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import static java.lang.annotation.ElementType.CONSTRUCTOR;
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.TYPE;
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import static java.lang.annotation.RetentionPolicy.SOURCE;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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/**
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* Denotes that the annotated element requires one or more device features. This
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* is used to auto-generate documentation.
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*
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* @hide
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*/
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@Retention(SOURCE)
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@Target({TYPE,FIELD,METHOD,CONSTRUCTOR})
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public @interface RequiresFeature {
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/**
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* The name of the device feature that is required.
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*/
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String value();
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/**
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* Defines the name of the method that should be called to check whether the feature is
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* available, using the same signature format as javadoc. The feature checking method can have
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* multiple parameters, but the feature name parameter must be of type String and must also be
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* the first String-type parameter.
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* <p>
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* By default, the enforcement is
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* {@link android.content.pm.PackageManager#hasSystemFeature(String)}.
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*/
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String enforcement() default("android.content.pm.PackageManager#hasSystemFeature");
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}
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