https://source.android.com/ 
/*
 * Copyright (C) 2008 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.annotation;

import java.lang.annotation.Target;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;


Indicates a class is a widget usable by application developers to create UI.


This must be used in cases where:

    

  • The widget is not in the package android.widget
    • 

  • The widget extends android.view.ViewGroup
    • 



@hide
/**
 * Indicates a class is a widget usable by application developers to create UI.
 * <p>
 * This must be used in cases where:
 * <ul>
 * <li>The widget is not in the package <code>android.widget</code></li>
 * <li>The widget extends <code>android.view.ViewGroup</code></li>
 * </ul>
 * @hide
 */
@Target({ ElementType.TYPE })
@Retention(RetentionPolicy.SOURCE)
public @interface Widget {
}