/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package android.support.annotation; import java.lang.annotation.Retention; import java.lang.annotation.Target; import static java.lang.annotation.ElementType.ANNOTATION_TYPE; import static java.lang.annotation.ElementType.FIELD; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.ElementType.PARAMETER; import static java.lang.annotation.RetentionPolicy.CLASS; import static java.lang.annotation.RetentionPolicy.SOURCE; /** * Denotes that the annotated String element, represents a logical * type and that its value should be one of the explicitly named constants. *

* Example: *

{@code
 *  @Retention(SOURCE)
 *  @StringDef({
 *     POWER_SERVICE,
 *     WINDOW_SERVICE,
 *     LAYOUT_INFLATER_SERVICE
 *  })
 *  public @interface ServiceName {}
 *  public static final String POWER_SERVICE = "power";
 *  public static final String WINDOW_SERVICE = "window";
 *  public static final String LAYOUT_INFLATER_SERVICE = "layout_inflater";
 *  ...
 *  public abstract Object getSystemService(@ServiceName String name);
 * }
*/ @Retention(CLASS) @Target({ANNOTATION_TYPE}) public @interface StringDef { /** Defines the allowed constants for this element */ String[] value() default {}; }