53 lines
2.2 KiB
Java
53 lines
2.2 KiB
Java
/*
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* Copyright (C) 2020 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.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.PARAMETER;
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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 a {@link android.content.Context} that can be used to create UI, meaning that it can
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* provide a {@link android.view.Display} via {@link android.content.Context#getDisplay} and can be
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* used to obtain a {@link android.view.WindowManager}, {@link android.view.LayoutInflater} or
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* {@link android.app.WallpaperManager} via
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* {@link android.content.Context#getSystemService(String)}. A {@link android.content.Context}
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* which is marked as {@link UiContext} implies that the {@link android.content.Context} is also a
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* {@link android.view.DisplayContext}.
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* <p>
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* This kind of {@link android.content.Context} is usually an {@link android.app.Activity} or
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* created via {@link android.content.Context#createWindowContext(int, android.os.Bundle)}.
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* </p>
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* This is a marker annotation and has no specific attributes.
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*
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* @see android.content.Context#getDisplay()
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* @see android.content.Context#getSystemService(String)
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* @see android.content.Context#getSystemService(Class)
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* @see android.content.Context#createWindowContext(int, android.os.Bundle)
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* @see DisplayContext
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* @hide
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*/
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@Retention(SOURCE)
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@Target({TYPE, METHOD, PARAMETER, FIELD})
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public @interface UiContext {
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}
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